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Update of /sources/public/html5/spec
In directory hutz:/tmp/cvs-serv31851

Modified Files:
	acknowledgements.html browsers.html dom.html editing.html 
	embedded-content-0.html forms.html history.html iana.html 
	index.html infrastructure.html interactive-elements.html 
	introduction.html named-character-references.html 
	obsolete.html offline.html references.html semantics.html 
	spec.html syntax.html tabular-data.html 
	text-level-semantics.html the-canvas-element.html 
	the-xhtml-syntax.html video.html webappapis.html 
Log Message:
More information on the reasons for authoring conformance criteria. I can't wait to see other W3C and IETF specs, like SVG, Atom, or RDFa, include introduction sections explaining why _they_ all have authoring conformance criteria. (whatwg r4966)

[updated by splitter]


Index: infrastructure.html
===================================================================
RCS file: /sources/public/html5/spec/infrastructure.html,v
retrieving revision 1.908
retrieving revision 1.909
diff -u -d -r1.908 -r1.909
--- infrastructure.html	4 Apr 2010 07:46:46 -0000	1.908
+++ infrastructure.html	4 Apr 2010 09:06:40 -0000	1.909
@@ -290,7 +290,7 @@
   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="introduction.html">&#8592; 1 Introduction</a> &#8211;

Index: text-level-semantics.html
===================================================================
RCS file: /sources/public/html5/spec/text-level-semantics.html,v
retrieving revision 1.894
retrieving revision 1.895
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@@ -290,7 +290,7 @@
   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="semantics.html">&#8592; 4 The elements of HTML</a> &#8211;

Index: the-canvas-element.html
===================================================================
RCS file: /sources/public/html5/spec/the-canvas-element.html,v
retrieving revision 1.761
retrieving revision 1.762
diff -u -d -r1.761 -r1.762
--- the-canvas-element.html	4 Apr 2010 07:46:47 -0000	1.761
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@@ -290,7 +290,7 @@
   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="video.html">&#8592; 4.8.6 The video element</a> &#8211;

Index: tabular-data.html
===================================================================
RCS file: /sources/public/html5/spec/tabular-data.html,v
retrieving revision 1.889
retrieving revision 1.890
diff -u -d -r1.889 -r1.890
--- tabular-data.html	4 Apr 2010 07:46:47 -0000	1.889
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@@ -290,7 +290,7 @@
   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="the-canvas-element.html">&#8592; 4.8.10 The canvas element</a> &#8211;

Index: embedded-content-0.html
===================================================================
RCS file: /sources/public/html5/spec/embedded-content-0.html,v
retrieving revision 1.886
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diff -u -d -r1.886 -r1.887
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   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="dom.html">&#8592; 3 Semantics, structure, and APIs of HTML documents</a> &#8211;

Index: dom.html
===================================================================
RCS file: /sources/public/html5/spec/dom.html,v
retrieving revision 1.900
retrieving revision 1.901
diff -u -d -r1.900 -r1.901
--- dom.html	4 Apr 2010 07:46:45 -0000	1.900
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   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="infrastructure.html">&#8592; 2 Common infrastructure</a> &#8211;

Index: references.html
===================================================================
RCS file: /sources/public/html5/spec/references.html,v
retrieving revision 1.894
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   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="index.html">&#8592; Index</a> &#8211;

Index: acknowledgements.html
===================================================================
RCS file: /sources/public/html5/spec/acknowledgements.html,v
retrieving revision 1.904
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--- acknowledgements.html	4 Apr 2010 07:46:44 -0000	1.904
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   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="references.html">&#8592; References</a> &#8211;

Index: iana.html
===================================================================
RCS file: /sources/public/html5/spec/iana.html,v
retrieving revision 1.225
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   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="obsolete.html">&#8592; 11 Obsolete features</a> &#8211;

Index: forms.html
===================================================================
RCS file: /sources/public/html5/spec/forms.html,v
retrieving revision 1.893
retrieving revision 1.894
diff -u -d -r1.893 -r1.894
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   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="tabular-data.html">&#8592; 4.9 Tabular data</a> &#8211;

Index: interactive-elements.html
===================================================================
RCS file: /sources/public/html5/spec/interactive-elements.html,v
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   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="forms.html">&#8592; 4.10 Forms</a> &#8211;

Index: editing.html
===================================================================
RCS file: /sources/public/html5/spec/editing.html,v
retrieving revision 1.895
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   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="webappapis.html">&#8592; 6 Web application APIs</a> &#8211;

Index: video.html
===================================================================
RCS file: /sources/public/html5/spec/video.html,v
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   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="text-level-semantics.html">&#8592; 4.6 Text-level semantics</a> &#8211;

Index: browsers.html
===================================================================
RCS file: /sources/public/html5/spec/browsers.html,v
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   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="interactive-elements.html">&#8592; 4.11 Interactive elements</a> &#8211;

Index: the-xhtml-syntax.html
===================================================================
RCS file: /sources/public/html5/spec/the-xhtml-syntax.html,v
retrieving revision 1.899
retrieving revision 1.900
diff -u -d -r1.899 -r1.900
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   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="named-character-references.html">&#8592; 8.5 Named character references</a> &#8211;

Index: offline.html
===================================================================
RCS file: /sources/public/html5/spec/offline.html,v
retrieving revision 1.888
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diff -u -d -r1.888 -r1.889
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   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="history.html">&#8592; 5.4 Session history and navigation</a> &#8211;

Index: obsolete.html
===================================================================
RCS file: /sources/public/html5/spec/obsolete.html,v
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    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="the-xhtml-syntax.html">&#8592; 9 The XHTML syntax</a> &#8211;

Index: named-character-references.html
===================================================================
RCS file: /sources/public/html5/spec/named-character-references.html,v
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   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="syntax.html">&#8592; 8 The HTML syntax</a> &#8211;

Index: history.html
===================================================================
RCS file: /sources/public/html5/spec/history.html,v
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    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
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    </div><div>
    <a href="browsers.html">&#8592; 5 Loading Web pages</a> &#8211;

Index: semantics.html
===================================================================
RCS file: /sources/public/html5/spec/semantics.html,v
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@@ -290,7 +290,7 @@
   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
-   <h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2><p>This is revision 1.3987.</p>
+   <h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2><p>This is revision 1.3988.</p>
 
    </div><div>
    <a href="embedded-content-0.html">&#8592; 3.2.5.1.6 Embedded content</a> &#8211;

Index: index.html
===================================================================
RCS file: /sources/public/html5/spec/index.html,v
retrieving revision 1.896
retrieving revision 1.897
diff -u -d -r1.896 -r1.897
--- index.html	4 Apr 2010 07:46:46 -0000	1.896
+++ index.html	4 Apr 2010 09:06:40 -0000	1.897
@@ -290,7 +290,7 @@
   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
-   <h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2><p>This is revision 1.3987.</p>
+   <h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2><p>This is revision 1.3988.</p>
 
    </div><div>
    <a href="iana.html">&#8592; 12 IANA considerations</a> &#8211;

Index: spec.html
===================================================================
RCS file: /sources/public/html5/spec/spec.html,v
retrieving revision 1.938
retrieving revision 1.939
diff -u -d -r1.938 -r1.939
--- spec.html	4 Apr 2010 07:46:47 -0000	1.938
+++ spec.html	4 Apr 2010 09:06:41 -0000	1.939
@@ -309,7 +309,7 @@
    </dl><p>This specification is available in the following formats: 
     <a href="Overview.html">single page HTML</a>,
     <a href="spec.html">multipage HTML</a>.
-This is revision 1.3987.
+This is revision 1.3988.
    </p> 
    <p class="copyright"><a href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a>
    &#169; 2010 <a href="http://www.w3.org/"><abbr title="World Wide

Index: introduction.html
===================================================================
RCS file: /sources/public/html5/spec/introduction.html,v
retrieving revision 1.897
retrieving revision 1.898
diff -u -d -r1.897 -r1.898
--- introduction.html	4 Apr 2010 07:46:46 -0000	1.897
+++ introduction.html	4 Apr 2010 09:06:40 -0000	1.898
@@ -289,7 +289,7 @@
   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
-   <h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2><p>This is revision 1.3987.</p>
+   <h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2><p>This is revision 1.3988.</p>
 
    </div><div>
    <a href="spec.html#contents">Table of contents</a> &#8211;
@@ -963,6 +963,42 @@
 
     </div>
 
+    <p class="example">Another example is the restrictions on the
+    content models of the <code><a href="semantics.html#the-ul-element">ul</a></code> element, which only allows
+    <code><a href="semantics.html#the-li-element">li</a></code> element children. Lists by definition consist just
+    of zero or more list items, so if a <code><a href="semantics.html#the-ul-element">ul</a></code> element
+    contains something other than an <code><a href="semantics.html#the-li-element">li</a></code> element, it's not
+    clear what was meant.</p>
+
+   </dd>
+
+
+   <dt>Errors that catch cases where the default styles are likely to lead to confusion</dt>
+
+   <dd>
+
+    <p>Certain elements have default styles or behaviors that make
+    certain combinations likely to lead to confusion. Where these have
+    equivalent alternatives without this problem, the confusing
+    combinations are disallowed.</p>
+
+    <p class="example">For example, <code><a href="semantics.html#the-div-element">div</a></code> elements are
+    rendered as block boxes, and <code><a href="text-level-semantics.html#the-span-element">span</a></code> elements as inline
+    boxes. Putting a block box in an inline box is unnecessarily
+    confusing; since either nesting just <code><a href="semantics.html#the-div-element">div</a></code> elements, or
+    nesting just <code><a href="text-level-semantics.html#the-span-element">span</a></code> elements, or nesting
+    <code><a href="text-level-semantics.html#the-span-element">span</a></code> elements inside <code><a href="semantics.html#the-div-element">div</a></code> elements all
+    serve the same purpose as nesting a <code><a href="semantics.html#the-div-element">div</a></code> element in a
+    <code><a href="text-level-semantics.html#the-span-element">span</a></code> element, but only the latter involves a block
+    box in an inline box, the latter combination is disallowed.</p>
+
+    <p class="example">Another example would be the way
+    <a href="embedded-content-0.html#interactive-content">interactive content</a> cannot be nested. For example, a
+    <code><a href="forms.html#the-button-element">button</a></code> element cannot contain a <code><a href="forms.html#the-textarea-element">textarea</a></code>
+    element. This is because the default behavior of such nesting
+    interactive elements would be highly confusing to users. Instead
+    of nesting these elements, they can be placed side by side.</p>
+
    </dd>
 
 
@@ -1001,6 +1037,34 @@
    </dd>
 
 
+   <dt>Errors that avoid peculiarities of the parser</dt>
+
+   <dd>
+
+    <p>Certain elements are parsed in someone eccentric ways
+    (typically for historical reasons), and their content model
+    restrictions are intended to avoid exposing the author to these
+    issues.</p>
+
+    <div class="example">
+
+     <p>For example, a <code><a href="forms.html#the-form-element">form</a></code> element isn't allowed inside
+     <a href="dom.html#phrasing-content">phrasing content</a>, because when parsed as HTML, a
+     <code><a href="forms.html#the-form-element">form</a></code> element's start tag will imply a <code><a href="semantics.html#the-p-element">p</a></code>
+     element's end tag. Thus, the following markup results in two
+     <a href="embedded-content-0.html#paragraph" title="paragraph">paragraphs</a>, not one:</p>
+
+     <pre>&lt;p&gt;Welcome. &lt;form&gt;&lt;label&gt;Name:&lt;/label&gt; &lt;input&gt;&lt;/form&gt;</pre>
+
+     <p>It is parsed exactly like the following:</p>
+
+     <pre>&lt;p&gt;Welcome. &lt;/p&gt;&lt;form&gt;&lt;label&gt;Name:&lt;/label&gt; &lt;input&gt;&lt;/form&gt;</pre>
+
+    </div>
+
+   </dd>
+
+
    <dt>Errors that would likely result in scripts failing in hard-to-debug ways</dt>
 
    <dd>

Index: syntax.html
===================================================================
RCS file: /sources/public/html5/spec/syntax.html,v
retrieving revision 1.901
retrieving revision 1.902
diff -u -d -r1.901 -r1.902
--- syntax.html	4 Apr 2010 07:46:47 -0000	1.901
+++ syntax.html	4 Apr 2010 09:06:41 -0000	1.902
@@ -290,7 +290,7 @@
   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
-   <h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2><p>This is revision 1.3987.</p>
+   <h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2><p>This is revision 1.3988.</p>
 
    </div><div>
    <a href="editing.html">&#8592; 7 User interaction</a> &#8211;

Index: webappapis.html
===================================================================
RCS file: /sources/public/html5/spec/webappapis.html,v
retrieving revision 1.23
retrieving revision 1.24
diff -u -d -r1.23 -r1.24
--- webappapis.html	4 Apr 2010 07:46:47 -0000	1.23
+++ webappapis.html	4 Apr 2010 09:06:42 -0000	1.24
@@ -290,7 +290,7 @@
   </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
    <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
    <h1>HTML5</h1>
-   <h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2><p>This is revision 1.3987.</p>
+   <h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2><p>This is revision 1.3988.</p>
 
    </div><div>
    <a href="offline.html">&#8592; 5.6 Offline Web applications</a> &#8211;

Received on Sunday, 4 April 2010 09:06:48 UTC