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40317662Explicitly allow <canvas> support to be disabled.2009-09-29 06:33
@@ -26308,36 +26308,38 @@ interface <dfn>CueRangeCallback</dfn> {
 
   <p>When authors use the <code>canvas</code> element, they must also
   provide content that, when presented to the user, conveys
   essentially the same function or purpose as the bitmap canvas. This
   content may be placed as content of the <code>canvas</code>
   element. The contents of the <code>canvas</code> element, if any,
   are the element's <span>fallback content</span>.</p>
 
   <p>In interactive visual media, if <span
   title="concept-n-script">scripting is enabled</span> for the
-  <code>canvas</code> element, the <code>canvas</code> element
+  <code>canvas</code> element, and if support for <code>canvas</code>
+  elements has been enabled, the <code>canvas</code> element
   <span>represents</span> <span>embedded content</span> consisting of
   a dynamically created image.</p>
 
   <p>In non-interactive, static, visual media, if the
   <code>canvas</code> element has been previously painted on (e.g. if
   the page was viewed in an interactive visual medium and is now being
   printed, or if some script that ran during the page layout process
   painted on the element), then the <code>canvas</code> element
   <span>represents</span> <span>embedded content</span> with the
   current image and size. Otherwise, the element represents its
   <span>fallback content</span> instead.</p>
 
   <p>In non-visual media, and in visual media if <span
   title="concept-n-noscript">scripting is disabled</span> for the
-  <code>canvas</code> element, the <code>canvas</code> element
+  <code>canvas</code> element or if support for <code>canvas</code>
+  elements has been disabled, the <code>canvas</code> element
   <span>represents</span> its <span>fallback content</span>
   instead.</p>
 
   <!-- CANVAS-FOCUS-FALLBACK -->
   <p>When a <code>canvas</code> element <span>represents</span>
   <span>embedded content</span>, the user can still focus descendants
   of the <code>canvas</code> element (in the <span>fallback
   content</span>). This allows authors to make an interactive canvas
   keyboard-focusable: authors should have a one-to-one mapping of
   interactive regions to focusable elements in the <span>fallback

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