Fix left/right confusion in Chapter 16

Author: marijnh

16_canvas.txt

@@ -430,8 +430,8 @@ to draw a full circle.
 ----
 
 (((moveTo method)))(((arc method)))(((path, canvas)))The resulting picture
-contains a ((line)) from the left of the full circle (first call to
-`arc`) to the left of the quarter-((circle)) (second call). Like other
+contains a ((line)) from the right of the full circle (first call to
+`arc`) to the right of the quarter-((circle)) (second call). Like other
 path-drawing methods, a line drawn with `arc` is connected to the
 previous path segment by default. You'd have to call `moveTo` or
 start a new path if you want to avoid this.

html/errata.html

@@ -52,4 +52,8 @@ <h2>Chapter 16</h2>
 the <code>bezierCurve</code> method. This method is actually
 called <code>bezierCurveTo</code> (as in the example code).</p>
 
+<p><strong>Page 282</strong> (Curves): Where it says the picture shows
+a line from the left of the circle to the left of the quarter circle,
+it should definitely say <em>right</em> in both instances.</p>
+
 </article>