/[pub]/test/html-webhacc/error-description-source.xml
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revision 1.9 by wakaba, Mon Sep 3 14:30:46 2007 UTC revision 1.15 by wakaba, Wed Nov 7 12:20:44 2007 UTC
# Line 48  Web Document Conformance Checker (BETA)< Line 48  Web Document Conformance Checker (BETA)<
48    <d:message xml:lang="en">The <code>&amp;</code> character must    <d:message xml:lang="en">The <code>&amp;</code> character must
49    introduce a reference.</d:message>    introduce a reference.</d:message>
50    <d:desc xml:lang="en">    <d:desc xml:lang="en">
51      <p>An <code>&amp;</code> (<code>U+0026</code>      <p>An <code>&amp;</code> character which
     <code class="charname">AMPERSAND</code>) character which  
52      is not part of any reference appears in the input stream.      is not part of any reference appears in the input stream.
53      The document is non-conforming.</p>      The document is non‐conforming.</p>
54    
55      <p><strong>Any <code>&amp;</code> character in URI (or IRI)      <p><em>Any <code>&amp;</code> character in URI (or IRI)
56      must be escaped as <code>&amp;amp;</code>.</strong></p>      must be escaped as <code class="example">&amp;amp;</code>.</em></p>
57    
58      <p>The <code>&amp;</code> character must      <p>The <code>&amp;</code> character must
59      be the first character of a reference:      be the first character of a reference:
60        <dl>        <dl class="switch">
61        <dt>Named entity reference</dt>        <dt>Named entity reference</dt>
62            <dd><pre class="html example"><code>&amp;<var>entity-name</var>;</code></pre>            <dd><pre class="html example"><code>&amp;<var>entity-name</var>;</code></pre>
63            where <var>entity-name</var> is the name of the            where <var>entity-name</var> is the name of the
# Line 134  Web Document Conformance Checker (BETA)< Line 133  Web Document Conformance Checker (BETA)<
133    
134      <p>The string <code>&amp;#</code> must be the first two characters      <p>The string <code>&amp;#</code> must be the first two characters
135      of a reference:      of a reference:
136        <dl>        <dl class="switch">
137        <dt>Numeric character reference</dt>        <dt>Numeric character reference</dt>
138            <dd><pre class="html example"><code>&amp;#<var>d</var>;</code></pre>            <dd><pre class="html example"><code>&amp;#<var>d</var>;</code></pre>
139            where <var>d</var> is the decimal representation of            where <var>d</var> is the decimal representation of
# Line 189  Web Document Conformance Checker (BETA)< Line 188  Web Document Conformance Checker (BETA)<
188    
189      <dl class="switch">      <dl class="switch">
190      <dt>Comments</dt>      <dt>Comments</dt>
191        <dd>In HTML documents, comments must be introduced by        <dd>In HTML document, comments must be introduced by
192        <code>&lt;!--</code> (<code>&lt;!</code> <em>immediately</em> followed        <code class="example">&lt;!--</code> (<code>&lt;!</code>
193          <em>immediately</em> followed
194        by <em>two</em> <code>-</code>s) and must be terminated by        by <em>two</em> <code>-</code>s) and must be terminated by
195        <code>--></code>.  Strings <code>&lt;!</code> not followed        <code class="example">--></code>.
196          Strings <code>&lt;!</code> not followed
197        by <code>--</code> and <code>&lt;!-</code> not followed by        by <code>--</code> and <code>&lt;!-</code> not followed by
198        <code>-</code> are not valid open delimiters for comments.</dd>        <code>-</code> are not valid open delimiters for comments.</dd>
199      <dt>Marked sections, including <code>CDATA</code> sections</dt>      <dt>Marked sections, including <code>CDATA</code> sections</dt>
200        <dd>Marked sections are not allowed in HTML documents.</dd>        <dd>Marked sections are not allowed in HTML document.</dd>
201      <dt>Markup declarations</dt>      <dt>Markup declarations</dt>
202        <dd>Markup declarations, except <code>DOCTYPE</code>        <dd>Markup declarations, except for <code>DOCTYPE</code>
203        and comment declarations, are not allowed in HTML documents.</dd>        and comment declarations, are not allowed in HTML document.</dd>
204      <dt>String <code>&lt;!</code></dt>      <dt>String <code>&lt;!</code></dt>
205        <dd>String <code>&lt;!</code> must be escaped as        <dd>String <code>&lt;!</code> must be escaped as
206        <code>&amp;lt;!</code>.</dd>        <code class="example">&amp;lt;!</code>.</dd>
207      </dl>      </dl>
208    </d:desc>    </d:desc>
209  </d:item>  </d:item>
# Line 261  Web Document Conformance Checker (BETA)< Line 262  Web Document Conformance Checker (BETA)<
262    
263  <d:item name="nestc"  <d:item name="nestc"
264      class="tokenize-error">      class="tokenize-error">
265    <d:message xml:lang="en">Void element syntax (<code>/></code>) cannot be    <d:message xml:lang="en">Polytheistic slash (<code>/></code>) cannot be
266    used for this element.</d:message>    used for this element.</d:message>
267    <d:desc xml:lang="en">    <d:desc xml:lang="en">
268      <p>Void element syntax (<code>/></code>) must not be used      <p>Polytheistic slash (<code>/></code>) must not be used
269      for the element.  The document is non-conforming.</p>      for the element.  The document is non-conforming.</p>
270    
271      <p>The void element syntax can only be      <p>The polytheistic slash can only be
272      used for <code>base</code>, <code>link</code>, <code>meta</code>,      used for <code>base</code>, <code>link</code>, <code>meta</code>,
273      <code>hr</code>, <code>br</code>, <code>img</code>,      <code>hr</code>, <code>br</code>, <code>img</code>,
274      <code>embed</code>, <code>param</code>, <code>area</code>,      <code>embed</code>, <code>param</code>, <code>area</code>,
275      <code>col</code>, and <code>input</code> elements.</p>      <code>col</code>, and <code>input</code> elements.</p>
276    
277      <dl>      <dl class="switch">
278      <dt><code>&lt;script/></code></dt>      <dt><code>&lt;script/></code></dt>
279          <dd><p>The void element syntax cannot be used for <code>script</code>          <dd><p>The polytheistic slash cannot be used for <code>script</code>
280          element.  Even for an empty <code>script</code> element,          element.  Even for an empty <code>script</code> element,
281          there must be an explicit end tag <code>&lt;/script></code>.</p>          there must be an explicit end tag
282            <code class="html example">&lt;/script></code>.</p>
283    
284          <p><strong>NOTE</strong>: Though some user agents interpret          <p><strong>NOTE</strong>: Though some user agents interpret
285          void element syntax for <code>script</code> element as the          polytheistic slash for <code>script</code> element as the
286          closing of the element, such usage is not allowed under          closing of the element, such usage is not allowed under
287          the current standard.</p></dd>          the current standard.</p></dd>
288      <dt><code>&lt;basefont/></code>, <code>&lt;bgsound/></code>,      <dt><code>&lt;basefont/></code>, <code>&lt;bgsound/></code>,
# Line 289  Web Document Conformance Checker (BETA)< Line 291  Web Document Conformance Checker (BETA)<
291          <dd>These elements are themselves non-conforming.</dd>          <dd>These elements are themselves non-conforming.</dd>
292      <!-- isindex, image -->      <!-- isindex, image -->
293      <dt><code>&lt;command/></code>, <code>&lt;event-source/></code>,      <dt><code>&lt;command/></code>, <code>&lt;event-source/></code>,
294      <code>&lt;source/></code></dt>      <code>&lt;nest/></code>, or <code>&lt;source/></code></dt>
295          <dd>Future revision of HTML5 parsing algorithm is expected          <dd>Future revision of HTML5 parsing algorithm is expected
296          to allow void element syntax for these elements.</dd>          to allow polytheistic slash for these elements.</dd>
297      <dt><code>&lt;a/></code>, <code>&lt;p/></code></dt>      <dt><code>&lt;a/></code>, <code>&lt;p/></code></dt>
298          <dd>These elements are not always empty and therefore          <dd>These elements are not always empty and therefore
299          void element syntax is not allowed.</dd>          polytheistic slash is not allowed.  Use explicit end tag
300            to represent empty element as:
301              <pre class="example html"><code>&lt;p>&lt;/p></code></pre>
302            </dd>
303      </dl>      </dl>
304    
305      <p>Note that, unlike in XML, the void element syntax has      <p>Note that, unlike in XML, the polytheistic slash has
306      no effect in HTML.</p>      no effect in HTML.</p>
307    </d:desc>    </d:desc>
308  </d:item>  </d:item>
# Line 314  Web Document Conformance Checker (BETA)< Line 319  Web Document Conformance Checker (BETA)<
319      (<code>&lt;?xml-stylesheet <var>...</var>?></code>), are not allowed      (<code>&lt;?xml-stylesheet <var>...</var>?></code>), are not allowed
320      in the HTML syntax.  The document is non-conforming.</p>      in the HTML syntax.  The document is non-conforming.</p>
321    
322      <dl>      <dl class="switch">
323        <dt><code>&lt;?xbl?></code> (<abbr>XBL</abbr> Association)</dt>
324          <dd>An <abbr>XBL</abbr> binding cannot be associated by
325          <abbr title="processing instruction">PI</abbr> in <abbr>HTML</abbr>
326          document.  Use <code>binding</code> property in <abbr>CSS</abbr>
327          style sheet as:
328            <pre class="html example"><code>&lt;style>
329    p {
330      binding: url(binding.xbl);
331    }
332    &lt;/style></code></pre>
333          </dd>
334      <dt><code>&lt;?xml?&gt;</code> (XML declaration)</dt>      <dt><code>&lt;?xml?&gt;</code> (XML declaration)</dt>
335          <dd>XML declaration is unnecessary for HTML documents.</dd>          <dd>XML declaration is unnecessary for HTML documents.</dd>
336      <dt><code>&lt;?xml-stylesheet?></code> (XML style sheet      <dt><code>&lt;?xml-stylesheet?></code> (XML style sheet
337      <abbr title="processing instruction">PI</abbr></dt>      <abbr title="processing instruction">PI</abbr>)</dt>
338          <dd>Use HTML <code>link</code> element with <code>rel</code>          <dd>Use HTML <code>link</code> element with <code>rel</code>
339          attribute set to <code>stylesheet</code> (or,          attribute set to <code>stylesheet</code> (or,
340          <code>alternate stylesheet</code> for an alternate style          <code>alternate stylesheet</code> for an alternate style
341          sheet).</dd>          sheet).
342      <dt><code>&lt;?php?&gt;</code> (PHP code)</dt>            <pre class="example html"><code>&lt;link rel=stylesheet href="path/to/stylesheet.css"></code></pre>
343            </dd>
344        <dt><code>&lt;?php?&gt;</code> or
345        <code>&lt;? <var>... <abbr>PHP</abbr> code ...</var> ?&gt;</code>
346        (<abbr>PHP</abbr> code)</dt>
347          <dd>The conformance checker does <em>not</em> support          <dd>The conformance checker does <em>not</em> support
348          checking for PHP source documents.</dd>          checking for PHP source documents.</dd>
349      <dt>Other processing instructions</dt>      <dt>Other processing instructions</dt>
# Line 470  Web Document Conformance Checker (BETA)< Line 490  Web Document Conformance Checker (BETA)<
490      </p>      </p>
491    
492      <p>Only white space characters and comments are allowed      <p>Only white space characters and comments are allowed
493      before the <code>DOCTYPE</code>.</p>      before the <code>DOCTYPE</code>.  XML declaration is <em>not</em>
494        allowed in HTML document.</p>
495    </d:desc>    </d:desc>
496  </d:item>  </d:item>
497    
# Line 482  Web Document Conformance Checker (BETA)< Line 503  Web Document Conformance Checker (BETA)<
503      <p>End tag of an element is not found before, for example,      <p>End tag of an element is not found before, for example,
504      an end tag of another element appears or      an end tag of another element appears or
505      the end of the document.  The document is non-conforming.</p>      the end of the document.  The document is non-conforming.</p>
506    
507        <p>Only <code>body</code>, <code>colgroup</code>, <code>dd</code>,
508        <code>dt</code>, <code>head</code>, <code>html</code>, <code>li</code>,
509        <code>ol</code>, <code>option</code>, <code>optgroup</code>,
510        <code>p</code>, <code>rb</code>, <code>rp</code>, <code>rt</code>,
511        <code>tbody</code>, <code>td</code>, <code>tfoot</code>,
512        <code>th</code>, <code>thead</code>, <code>tr</code>,
513        <code>ul</code> end tag can be omitted in HTML documents.
514        For any element except for void element, there must be an explicit
515        end tag.</p>
516    
517        <dl class="switch">
518        <dt>HTML <code>canvas</code> element</dt>
519          <dd>Though the element is void in earlier versions of Safari,
520          the <code>canvas</code> element is <em>no</em> longer
521          defined as empty.  There must be an end tag
522          <code class="html example">&lt;/canvas></code>.</dd>
523        </dl>
524    
525        <p>Note that misnesting tags, such as
526        <code class="bad example">&lt;a>&lt;b>&lt;/a>&lt;/b></code>, are not
527        allowed and they also cause this error.</p>
528    </d:desc>    </d:desc>
529  </d:item>  </d:item>
530    
# Line 510  Web Document Conformance Checker (BETA)< Line 553  Web Document Conformance Checker (BETA)<
553    <d:desc xml:lang="en">    <d:desc xml:lang="en">
554      <p>The document contains a <code>DOCTYPE</code> declaration      <p>The document contains a <code>DOCTYPE</code> declaration
555      that is different from HTML5 <code>DOCTYPE</code> (i.e.      that is different from HTML5 <code>DOCTYPE</code> (i.e.
556      <code>&lt;!DOCTYPE HTML&gt;</code>).  The document is non-conforming.</p>      <code class="example html">&lt;!DOCTYPE HTML&gt;</code>).
557        The document is non‐conforming.</p>
558    
559      <p>The document might or might not be conformant to      <p>The document might or might not be conformant to
560      some version of HTML.  However, conformance to any HTML      some version of HTML.  However, conformance to any HTML
# Line 530  Web Document Conformance Checker (BETA)< Line 574  Web Document Conformance Checker (BETA)<
574    
575      <p>For any end tag in HTML document, there must be a      <p>For any end tag in HTML document, there must be a
576      corresponding start tag.</p>      corresponding start tag.</p>
577    
578        <dl class="switch">
579        <dt>HTML <code>base</code>, <code>basefont</code>,
580        <code>bgsound</code>, <code>br</code>, <code>col</code>,
581        <code>embed</code>, <code>frame</code>, <code>hr</code>,
582        <code>image</code>, <code>img</code>, <code>input</code>,
583        <code>isindex</code>, <code>link</code>, <code>meta</code>,
584        <code>param</code>, <code>spacer</code>, or <code>wbr</code> element</dt>
585          <dd>End tag is not allowed for these elements, since
586          those content must always be empty.  Remove end tag.</dd>
587        <!-- keygen -->
588        <!-- command, event-source, nest, source -->
589        </dl>
590    </d:desc>    </d:desc>
591  </d:item>  </d:item>
592    
# Line 574  Web Document Conformance Checker (BETA)< Line 631  Web Document Conformance Checker (BETA)<
631      must contain a <code><var>$0</var></code> child element.      must contain a <code><var>$0</var></code> child element.
632      The document is non-conforming.</p>      The document is non-conforming.</p>
633    
634      <p>For example:      <dl class="switch">
635        <ul>      <dt>HTML <code>head</code> element</dt>
636        <li>The <code>head</code> element must contain exactly one        <dd>There must be a <code>title</code> child element.</dd>
637        <code>title</code> child element.</li>      <dt>HTML <code>html</code> element</dt>
638        <li><a href="#child-element-missing:td%7Cth">The <code>tr</code>        <dd>There must be a <code>head</code> child element followed
639        element must contain one or more <code>td</code> or <code>th</code>        by a <code>body</code> element.</dd>
640        child element.</a></li>      <dt>HTML <code>tr</code> element</dt>
641        </ul>        <dd><a href="#child-element-missing:td%7Cth">There must be
642      </p>        one or more <code>td</code> or <code>th</code> child element.</a></dd>
643        </dl>
644    </d:desc>    </d:desc>
645  </d:item>  </d:item>
646    
# Line 628  Web Document Conformance Checker (BETA)< Line 686  Web Document Conformance Checker (BETA)<
686                    block-level content, any inline-level content must be                    block-level content, any inline-level content must be
687                    put in e.g. paragraph element such as <code>p</code>.</p>                    put in e.g. paragraph element such as <code>p</code>.</p>
688                    <p>For example, an HTML document fragment                    <p>For example, an HTML document fragment
689                    <code class="bad example">&lt;div>&lt;p>Hello!&lt;/p> World!&lt;/div></code>                    <code class="html bad example">&lt;div>&lt;p>Hello!&lt;/p> World!&lt;/div></code>
690                    is non-conforming, since a word <q>World!</q> does not belong                    is non-conforming, since a word <q>World!</q> does not belong
691                    to any paragraph.  (If not part of any paragraph, what is                    to any paragraph.  (If not part of any paragraph, what is
692                    it!?)  A conforming example would be:                    it!?)  A conforming example would be:
693                      <pre class="example"><code>&lt;div>&lt;p>Hello!&lt;/p> &lt;p>World!&lt;/p>&lt;/div></code></pre>                      <pre class="html example"><code>&lt;div>&lt;p>Hello!&lt;/p> &lt;p>World!&lt;/p>&lt;/div></code></pre>
694                    </p></dd>                    </p></dd>
695                <dt>If the parent element does <em>not</em> allow                <dt>If the parent element does <em>not</em> allow
696                block-level elements as content</dt>                block-level elements as content</dt>
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704            and in the <code>head</code> element.            and in the <code>head</code> element.
705            It cannot be used in e.g. <code>ul</code>, <code>table</code>,            It cannot be used in e.g. <code>ul</code>, <code>table</code>,
706            or <code>select</code>.</dd>            or <code>select</code>.</dd>
       <dt>If the element with the error is the <code>html</code> element  
       that is the root element of an XHTML document</dt>  
           <dd><p>In an XHTML document, the root <code>html</code>  
           element must have an <code>xmlns</code> attribute  
           whose value is set to  
           <code>http://www.w3.org/1999/xhtml</code>.</p></dd>  
707        <dt>If the element with the error is <code>blink</code>,        <dt>If the element with the error is <code>blink</code>,
708        <code>center</code>, or <code>marquee</code> element</dt>        <code>center</code>, or <code>marquee</code> element</dt>
709            <dd>These elements are not part of the HTML standard.            <dd>These elements are not part of the HTML standard.
710            Use CSS for styling control.</dd>            Use CSS for styling control.</dd>
711    
712        <dt><code>button</code>, <code>datalist</code>, <code>form</code>,        <dt><code>button</code>, <code>datalist</code>,
713          <code>fieldset</code>, <code>form</code>,
714        <code>input</code>, <code>label</code>,        <code>input</code>, <code>label</code>,
715        <code>optgroup</code>, <code>option</code>, <code>output</code>,        <code>optgroup</code>, <code>option</code>, <code>output</code>,
716        <code>rb</code>, <code>rp</code>, <code>rt</code>, <code>ruby</code>,        <code>rb</code>, <code>rp</code>, <code>rt</code>, <code>ruby</code>,
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723    </d:desc>    </d:desc>
724  </d:item>  </d:item>
725    
726    <d:item name="element not allowed:root"
727        class="content-model-error">
728      <d:message xml:lang="en">This element is not allowed as a root
729      element.</d:message>
730      <d:desc xml:lang="en">
731        <p>An element that is not allowed as the root element
732        is used as the root element of the document.  The document is
733        non-conforming, as far as the conformance checker can tell.</p>
734    
735        <dl class="switch">
736        <dt><code>html</code> element in an XHTML document</dt>
737            <dd><p>In <abbr>XHTML</abbr> document, the root <code>html</code>
738            element must have an <code>xmlns</code> attribute as:
739              <pre class="xml example"><code>&lt;html xmlns="http://www.w3.org/1999/xhtml"></code></pre></p></dd>
740        <dt><code>rss</code> element</dt>
741            <dd><p>The document is written in some version of RSS.</p>
742            <p>The conformance checker does not support any version
743            of RSS.  Use Atom 1.0 for feed documents.</p></dd>
744        <dt><code>feed</code> element</dt>
745            <dd><p>The Atom <code>feed</code> element must be
746            in the <code>http://www.w3.org/2005/Atom</code>
747            namespace as:
748              <pre class="xml example"><code>&lt;feed xmlns="http://www.w3.org/2005/Atom"></code></pre>
749            </p>
750            <p>The conformance checker does not support Atom 0.3.
751            Use Atom 1.0 for feed documents.</p></dd>
752        </dl>
753      </d:desc>
754    </d:item>
755    
756  <d:item name="ps element missing"  <d:item name="ps element missing"
757      class="content-model-error">      class="content-model-error">
758    <d:message xml:lang="en">There is no <code><var>$0</var></code>    <d:message xml:lang="en">There is no <code><var>$0</var></code>
# Line 818  Web Document Conformance Checker (BETA)< Line 901  Web Document Conformance Checker (BETA)<
901    
902      <dl>      <dl>
903      <dt>HTML <code>meta</code> element, <code>http-equiv</code> attribute</dt>      <dt>HTML <code>meta</code> element, <code>http-equiv</code> attribute</dt>
904          <dd><p>Only <code>Default-Style</code> and <code>Refresh</code>          <dd><p>Only values <code>Default-Style</code> and <code>Refresh</code>
905          is allowed.</p>          are allowed.</p>
906          <p>Value <code>Content-Type</code> is obsolete; for charset          <p>Value <code>Content-Type</code> is obsolete; for charset
907          declaration, the <code>charset</code> attribute can be used as:          declaration, the <code>charset</code> attribute can be used as:
908          <pre class="html example"><code>&lt;meta charset="<var>charset-name</var>"></code></pre>          <pre class="html example"><code>&lt;meta charset="<var>charset-name</var>"></code></pre>
# Line 837  Web Document Conformance Checker (BETA)< Line 920  Web Document Conformance Checker (BETA)<
920    </d:desc>    </d:desc>
921  </d:item>  </d:item>
922    
923    <d:item name="enumerated:invalid:http-equiv:content-type"
924        class="attribute-value-error">
925      <d:message xml:lang="en">Charset declaration syntax
926      <code class="html bad example">&lt;meta http-equiv="Content-Type" content="text/html; charset=<var>charset-name</var>"></code>
927      is obsolete.</d:message>
928      <d:desc xml:lang="en">
929        <p>Old long charset declaration syntax
930        <code class="html bad example">&lt;meta http-equiv="Content-Type" content="text/html; charset=<var>charset-name</var>"></code>
931        is in use.  The document is non‐conforming.</p>
932    
933        <p>The new charset declaration syntax is:
934          <pre class="html example"><code>&lt;meta charset="<var>charset-name</var>"></code></pre>
935        </p>
936      </d:desc>
937    </d:item>
938    
939  <d:item name="duplicate ID"  <d:item name="duplicate ID"
940      class="attribute-value-error">      class="attribute-value-error">
941    <d:message xml:lang="en">This identifier has already been    <d:message xml:lang="en">This identifier has already been
# Line 869  Web Document Conformance Checker (BETA)< Line 968  Web Document Conformance Checker (BETA)<
968      <p>The specified link type is non-conforming, and therefore      <p>The specified link type is non-conforming, and therefore
969      the document is non-conforming.</p>      the document is non-conforming.</p>
970    
971      <dl>      <dl class="switch">
972      <dt>Link type <code>contents</code></dt>      <dt>Link type <code>contents</code></dt>
973        <dd>Use link type <code>index</code>.</dd>        <dd>Use link type <code>index</code>.</dd>
974      <dt>Link type <code>copyright</code></dt>      <dt>Link type <code>copyright</code></dt>
975        <dd>Use link type <code>license</code>.</dd>        <dd>Use link type <code>license</code>.</dd>
976      <dt>Link type <code>home</code></dt>      <dt>Link type <code>home</code></dt>
977        <dd>Use link type <code>index</code>.</dd>        <dd>Use link type <code>index</code>.</dd>
978        <dt>Link type <code>previous</code></dt>
979          <dd>Use link type <code>prev</code>.</dd>
980      <dt>Link type <code>start</code></dt>      <dt>Link type <code>start</code></dt>
981        <dd>Use link type <code>first</code>.</dd>        <dd>Use link type <code>first</code>.</dd>
982      <dt>Link type <code>toc</code></dt>      <dt>Link type <code>toc</code> or <code>top</code></dt>
983        <dd>Use link type <code>index</code>.</dd>        <dd>Use link type <code>index</code>.</dd>
984      </dl>      </dl>
985    </d:desc>    </d:desc>
# Line 921  Web Document Conformance Checker (BETA)< Line 1022  Web Document Conformance Checker (BETA)<
1022    
1023      <p><strong>Warning</strong>: The data served to the      <p><strong>Warning</strong>: The data served to the
1024      conforming checker might be out of date; it might have already      conforming checker might be out of date; it might have already
1025      been accepted or rejected, depending on which the document      been accepted or rejected.  The document might or might not be
1026      might be conforming or non-conforming.  See WHATWG Wiki      conforming depending on the status.  See WHATWG Wiki
1027      for the latest information.</p>      for the latest information.</p>
1028    </d:desc>    </d:desc>
1029  </d:item>  </d:item>
# Line 957  Web Document Conformance Checker (BETA)< Line 1058  Web Document Conformance Checker (BETA)<
1058      The document is non-conforming.</p>      The document is non-conforming.</p>
1059    
1060      <p>For example, the table below is non-conforming:      <p>For example, the table below is non-conforming:
1061        <pre class="html non-conforming example"><code>&lt;table>        <pre class="html bad example"><code>&lt;table>
1062  &lt;tbody>  &lt;tbody>
1063  &lt;tr>&lt;td rowspan=2>&lt;/td>&lt;/tr>  &lt;tr>&lt;td rowspan=2>&lt;/td>&lt;/tr>
1064  &lt;/tbody>  &lt;/tbody>
# Line 976  Web Document Conformance Checker (BETA)< Line 1077  Web Document Conformance Checker (BETA)<
1077      class="should" level="s">      class="should" level="s">
1078    <d:message xml:lang="en"><code><var>{@}</var></code>: An <em>obsolete</em>    <d:message xml:lang="en"><code><var>{@}</var></code>: An <em>obsolete</em>
1079    subtype is used.</d:message>    subtype is used.</d:message>
1080      <d:item xml:lang="en">
1081        <p>The specified Internet Media Type is registered with status
1082        of <i>OBSOLETE</i>.</p><!-- @@ SHOULD NOT? -->
1083        
1084        <dl class="swtich">
1085        <dt>Media type <code>text/ecmascript</code></dt>
1086          <dd>Media type <code>text/ecmascript</code> is obsoleted in
1087          favor of <code>application/ecmascript</code>.  Note that
1088          <code>text/javascript</code> would be better alternative
1089          for many cases.</dd>
1090        <dt>Media type <code>text/javascript</code></dt>
1091          <dd>Media type <code>text/javascript</code> is obsoleted by
1092          <abbr>IETF</abbr> with backward incompatible alternate
1093          <code>application/javascript</code> for architectural
1094          purity.<!-- @@ ref? -->  Realist may ignore this warning.</dd>
1095        </dl>
1096      </d:item>
1097  </d:item>  </d:item>
1098    
1099  <d:item name="IMT:private subtype"  <d:item name="IMT:private subtype"
# Line 1040  Web Document Conformance Checker (BETA)< Line 1158  Web Document Conformance Checker (BETA)<
1158      class="should" level="s">      class="should" level="s">
1159    <d:message xml:lang="en">This IRI does not end with    <d:message xml:lang="en">This IRI does not end with
1160    a <code>/</code>.</d:message>    a <code>/</code>.</d:message>
1161      <d:item xml:lang="en">
1162        <p>The IRI does not end with a <code>/</code>.  If there is an
1163        authority component in an IRI, a <code>/</code> should be present
1164        instead of empty path component.</p>
1165    
1166        <p>For example, <code>http://www.example.com<strong>/</strong></code>
1167        is preferred to <code>http://www.example.com</code>.</p>
1168      </d:item>
1169  </d:item>  </d:item>
1170    
1171  <d:item name="URI::lowercase hexadecimal digit"  <d:item name="URI::lowercase hexadecimal digit"
# Line 1086  Web Document Conformance Checker (BETA)< Line 1212  Web Document Conformance Checker (BETA)<
1212    
1213  </section>  </section>
1214    
1215    <section id="cache-manifest-errors">
1216    <h2>Cache Manifest Errors</h2>
1217    
1218    <d:item name="not manifest" class="must" level="m">
1219      <d:message xml:lang="en">This document is not a cache manifest.</d:message>
1220      <d:desc xml:lang="en">
1221        <p>The specified document is <em>not</em> a cache manifest.
1222        The document is non-conforming.</p>
1223    
1224        <p>An entity labeled as Internet media type
1225        <code>text/cache-manifest</code> must contain a cache manifest.</p>
1226    
1227        <p>A cache manifest must start with a line whose content is
1228        <code class="manifest example">CACHE MANIFEST</code>
1229        (exactly one space character between
1230        <code>CACHE</code> and <code>MANIFEST</code>).</p>
1231      </d:desc>
1232    </d:item>
1233    </section>
1234    
1235  <section id="unsupported-messages">  <section id="unsupported-messages">
1236  <h2><i>Unsupported</i> Messages</h2>  <h2><i>Unsupported</i> Messages</h2>
1237    
# Line 1144  Web Document Conformance Checker (BETA)< Line 1290  Web Document Conformance Checker (BETA)<
1290    is not supported; <em>it might or might not be conforming.</em></d:message>    is not supported; <em>it might or might not be conforming.</em></d:message>
1291  </d:item>  </d:item>
1292    
 <d:item name="language tag"  
     class="unsupported" level="unsupported">  
   <d:message xml:lang="en">Conformance checking for language tag  
   is not supported; <em>it might or might not be conforming.</em></d:message>  
 </d:item>  
   
1293  <d:item name="media query"  <d:item name="media query"
1294      class="unsupported" level="unsupported">      class="unsupported" level="unsupported">
1295    <d:message xml:lang="en">Conformance checking for media query    <d:message xml:lang="en">Conformance checking for media query
# Line 1181  manakaiIsHTML:1;;HTML Document Line 1321  manakaiIsHTML:1;;HTML Document
1321  manakaiIsHTML:0;;XML Document  manakaiIsHTML:0;;XML Document
1322  </d:catalog>  </d:catalog>
1323    
1324    <section id="levels">
1325    <h2>Error Levels</h2>
1326    
1327    <table id="levels-table">
1328    <thead>
1329    <tr><th scope="col">Level</th>
1330    <th scope="col">Conforming?</th>
1331    <th scope="col">Description</th>
1332    </tr>
1333    </thead>
1334    <tbody>
1335    <tr id="level-m" class="level-m">
1336    <th scope="row"><em class="rfc2119">MUST</em>‐level error</th>
1337    <td>Non‐conforming.</td>
1338    <td>A violation to a hard requirement of the specification.
1339    The document is non‐conforming.</td>
1340    </tr>
1341    <tr id="level-s" class="level-s">
1342    <th scope="row"><em class="rfc2119">SHOULD</em>‐level error</th>
1343    <td>Non‐conforming, but <em>in some case</em>
1344    conforming.</td>
1345    <td>A violation to a requirement of the specification.
1346    The violation might be legitimize in some case.  Otherwise,
1347    the document is non‐conforming.</td>
1348    </tr>
1349    <tr id="level-w" class="level-w">
1350    <th scope="row">Warning</th>
1351    <td>Conforming.</td>
1352    <td>A warning is an advice from the conformance checker to avoid
1353    to solve a problem in a confusing or possibly wrong way.
1354    It does not affect to the conformance of the document, and
1355    may sometimes be inappropriate.</td>
1356    </tr>
1357    <tr id="level-unsupported" class="level-unsupported">
1358    <th scope="row">Not supported</th>
1359    <td><em>Unknown</em>.</td>
1360    <td>Some feature that is not supported by the conformance checker
1361    is used in the document.</td>
1362    </tr>
1363    </tbody>
1364    </table>
1365    </section>
1366    
1367  <section id="license">  <section id="license">
1368  <h2>License of This Document</h2>  <h2>License of This Document</h2>
1369    
1370  <p>Copyright 2007 <a href="http://suika.fam.cx/~wakaba/who?" rel="author" xml:lang="ja">Wakaba</a></p>  <p>Copyright <time>2007</time>
1371    <a href="http://suika.fam.cx/~wakaba/who?" rel="author" xml:lang="ja">Wakaba</a>
1372    <code class="mail">&lt;<a href="mailto:[email protected]">[email protected]</a>></code>.</p>
1373    
1374  <p>This document is free software; you can redistribute it  <p>This document is free software; you can redistribute it
1375  and/or modify it under the same terms as Perl itself.</p>  and/or modify it under the same terms as Perl itself.</p>
1376  </section>  </section>
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