/[pub]/test/html-webhacc/error-description-source.xml
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revision 1.6 by wakaba, Sat Jul 21 04:58:17 2007 UTC revision 1.11 by wakaba, Mon Sep 10 11:51:09 2007 UTC
# Line 28  Web Document Conformance Checker (BETA)< Line 28  Web Document Conformance Checker (BETA)<
28    </d:desc>    </d:desc>
29  </d:item>  </d:item>
30    
31    <d:item name="after body"
32        class="parse-error">
33      <d:message xml:lang="en">Tag <code>&lt;<var>$0</var>&gt;</code>
34      is not allowed after the end tag <code>&lt;/body></code>.</d:message>
35      <d:desc xml:lang="en">
36        <p>The start or end tag of an element appears after the
37        <code>body</code> element has been closed.  The document is
38        non-conforming.</p>
39    
40        <p>Any content of the document other than <code>head</code>
41        contents and comments must be put into the <code>body</code>
42        element.</p>
43      </d:desc>
44    </d:item>
45    
46  <d:item name="bare ero"  <d:item name="bare ero"
47      class="tokenize-error">      class="tokenize-error">
48    <d:message xml:lang="en">The <code>&amp;</code> character must    <d:message xml:lang="en">The <code>&amp;</code> character must
# Line 38  Web Document Conformance Checker (BETA)< Line 53  Web Document Conformance Checker (BETA)<
53      is not part of any reference appears in the input stream.      is not part of any reference appears in the input stream.
54      The document is non-conforming.</p>      The document is non-conforming.</p>
55    
56        <p><strong>Any <code>&amp;</code> character in URI (or IRI)
57        must be escaped as <code>&amp;amp;</code>.</strong></p>
58    
59      <p>The <code>&amp;</code> character must      <p>The <code>&amp;</code> character must
60      be the first character of a reference:      be the first character of a reference:
61        <dl>        <dl>
# Line 63  Web Document Conformance Checker (BETA)< Line 81  Web Document Conformance Checker (BETA)<
81    </d:desc>    </d:desc>
82  </d:item>  </d:item>
83    
84    <d:item name="bare etago"
85        class="tokenize-error">
86      <d:message xml:lang="en">A <code>&lt;/</code> string is not followed
87      by a tag name.</d:message><!-- </ EOF -->
88      <d:desc xml:lang="en">
89        <p>There is a <code>&lt;</code> (<code>U+003C</code>
90        <code class="charname">LESS-THAN SIGN</code>) character
91        immediately followed by a <code>/</code> (<code>U+005F</code>
92        <code>SOLIDUS</code>) character, which is not part
93        of any end tag, in the input stream.  The document
94        is non-conforming.</p>
95    
96        <p>The <code>&lt;/</code> sequence immediately followed
97        by an <abbr title="End of file pseudo-character">EOF</abbr> is
98        interpreted as a string data of <code>&lt;/</code>.</p>
99    
100        <p>The <code>&lt;/</code> sequence as string data must
101        be escaped as:
102        <pre class="html example"><code>&amp;lt;/</code></pre>
103        </p>
104      </d:desc>
105    </d:item>
106    
107  <d:item name="bare stago"  <d:item name="bare stago"
108      class="tokenize-error">      class="tokenize-error">
109    <d:message xml:lang="en">A <code>&lt;</code> character is not followed    <d:message xml:lang="en">A <code>&lt;</code> character is not followed
# Line 134  Web Document Conformance Checker (BETA)< Line 175  Web Document Conformance Checker (BETA)<
175    </d:desc>    </d:desc>
176  </d:item>  </d:item>
177    
178    <d:item name="bogus comment"
179        class="tokenize-error">
180      <d:message xml:lang="en">String <code>&lt;!</code> is not followed
181      by <code>--</code>.</d:message>
182      <d:desc xml:lang="en">
183        <p>There is a <code>&lt;</code> (<code>U+003C</code>
184        <code class="charname">LESS-THAN SIGN</code>) character
185        followed by a <code>!</code> (<code>U+0021</code>
186        <code class="charname">EXCLAMATION MARK</code>) character,
187        which is not followed by a <code>--</code> or
188        <code>!DOCTYPE</code>.  The document is non-conforming.</p>
189    
190        <dl class="switch">
191        <dt>Comments</dt>
192          <dd>In HTML documents, comments must be introduced by
193          <code>&lt;!--</code> (<code>&lt;!</code> <em>immediately</em> followed
194          by <em>two</em> <code>-</code>s) and must be terminated by
195          <code>--></code>.  Strings <code>&lt;!</code> not followed
196          by <code>--</code> and <code>&lt;!-</code> not followed by
197          <code>-</code> are not valid open delimiters for comments.</dd>
198        <dt>Marked sections, including <code>CDATA</code> sections</dt>
199          <dd>Marked sections are not allowed in HTML documents.</dd>
200        <dt>Markup declarations</dt>
201          <dd>Markup declarations, except <code>DOCTYPE</code>
202          and comment declarations, are not allowed in HTML documents.</dd>
203        <dt>String <code>&lt;!</code></dt>
204          <dd>String <code>&lt;!</code> must be escaped as
205          <code>&amp;lt;!</code>.</dd>
206        </dl>
207      </d:desc>
208    </d:item>
209    
210    <d:item name="bogus end tag"
211        class="tokenize-error">
212      <d:message xml:lang="en">String <code>&lt;/</code> is not followed
213      by tag name.</d:message><!-- </ non-name-start-char-non-EOF -->
214      <d:desc xml:lang="en">
215        <p>There is a <code>&lt;</code> (<code>U+003C</code>
216        <code class="charname">LESS-THAN SIGN</code>) character
217        immediately followed by a <code>/</code> (<code>U+005F</code>
218        <code>SOLIDUS</code>) character, which is not part
219        of any end tag, in the input stream.  The document
220        is non-conforming.</p>
221    
222        <p>The <code>&lt;/</code> sequence not followed by a
223        tag name is parsed as an opening of bogus comment.</p>
224    
225        <p>The <code>&lt;/</code> sequence as string data must
226        be escaped as:
227        <pre class="html example"><code>&amp;lt;/</code></pre>
228        </p>
229      </d:desc>
230    </d:item>
231    
232  <d:item name="dash in comment"  <d:item name="dash in comment"
233      class="tokenize-error">      class="tokenize-error">
234    <d:message xml:lang="en">There is a <code>--</code> sequence    <d:message xml:lang="en">There is a <code>--</code> sequence
# Line 166  Web Document Conformance Checker (BETA)< Line 261  Web Document Conformance Checker (BETA)<
261    
262  <d:item name="nestc"  <d:item name="nestc"
263      class="tokenize-error">      class="tokenize-error">
264    <d:message xml:lang="en">Void element syntax (<code>/></code>) cannot be    <d:message xml:lang="en">Polytheistic slash (<code>/></code>) cannot be
265    used for this element.</d:message>    used for this element.</d:message>
266    <d:desc xml:lang="en">    <d:desc xml:lang="en">
267      <p>Void element syntax (<code>/></code>) must not be used      <p>Polytheistic slash (<code>/></code>) must not be used
268      for the element.  The document is non-conforming.</p>      for the element.  The document is non-conforming.</p>
269    
270      <p>The void element syntax can only be      <p>The polytheistic slash can only be
271      used for <code>base</code>, <code>link</code>, <code>meta</code>,      used for <code>base</code>, <code>link</code>, <code>meta</code>,
272      <code>hr</code>, <code>br</code>, <code>img</code>,      <code>hr</code>, <code>br</code>, <code>img</code>,
273      <code>embed</code>, <code>param</code>, <code>area</code>,      <code>embed</code>, <code>param</code>, <code>area</code>,
274      <code>col</code>, and <code>input</code> elements.</p>      <code>col</code>, and <code>input</code> elements.</p>
275    
276      <p>Note that, unlike in XML, the void element syntax has      <dl>
277        <dt><code>&lt;script/></code></dt>
278            <dd><p>The polytheistic slash cannot be used for <code>script</code>
279            element.  Even for an empty <code>script</code> element,
280            there must be an explicit end tag <code>&lt;/script></code>.</p>
281    
282            <p><strong>NOTE</strong>: Though some user agents interpret
283            polytheistic slash for <code>script</code> element as the
284            closing of the element, such usage is not allowed under
285            the current standard.</p></dd>
286        <dt><code>&lt;basefont/></code>, <code>&lt;bgsound/></code>,
287        <code>&lt;frame/></code>, <code>&lt;keygen/></code>,
288        <code>&lt;spacer/></code>, <code>&lt;wbr/></code></dt>
289            <dd>These elements are themselves non-conforming.</dd>
290        <!-- isindex, image -->
291        <dt><code>&lt;command/></code>, <code>&lt;event-source/></code>,
292        <code>&lt;source/></code></dt>
293            <dd>Future revision of HTML5 parsing algorithm is expected
294            to allow polytheistic slash for these elements.</dd>
295        <dt><code>&lt;a/></code>, <code>&lt;p/></code></dt>
296            <dd>These elements are not always empty and therefore
297            polytheistic slash is not allowed.</dd>
298        </dl>
299    
300        <p>Note that, unlike in XML, the polytheistic slash has
301      no effect in HTML.</p>      no effect in HTML.</p>
302    </d:desc>    </d:desc>
303  </d:item>  </d:item>
# Line 187  Web Document Conformance Checker (BETA)< Line 306  Web Document Conformance Checker (BETA)<
306  <d:item name="pio"  <d:item name="pio"
307      class="tokenize-error">      class="tokenize-error">
308    <d:message xml:lang="en">Processing instruction    <d:message xml:lang="en">Processing instruction
309    (<code>&lt;?<var>...</var>?></code>) cannot be used.</d:message>    (<code>&lt;?<var>...</var>></code>) cannot be used.</d:message>
310    <d:desc xml:lang="en">    <d:desc xml:lang="en">
311      <p>Processing instructions (<code>&lt;?<var>...</var>?></code>),      <p>Processing instructions (<code>&lt;?<var>...</var>?></code>),
312      including XML declaration (<code>&lt;?xml <var>...</var>?></code>)      including XML declaration (<code>&lt;?xml <var>...</var>?></code>)
313      and XML style sheet <abbr title="processing instruction">PI</abbr>      and XML style sheet <abbr title="processing instruction">PI</abbr>
314      (<code>&lt;xml-stylesheet <var>...</var>?></code>), are not allowed      (<code>&lt;?xml-stylesheet <var>...</var>?></code>), are not allowed
315      in the HTML syntax.  The document is non-conforming.</p>      in the HTML syntax.  The document is non-conforming.</p>
316    
317      <p>If it is necessary to embed a processing instruction      <dl>
318      in the HTML document, you must use the XML syntax instead.</p>      <dt><code>&lt;?xml?&gt;</code> (XML declaration)</dt>
319            <dd>XML declaration is unnecessary for HTML documents.</dd>
320      <p>In the HTML syntax, XML declaration is not necessary.</p>      <dt><code>&lt;?xml-stylesheet?></code> (XML style sheet
321        <abbr title="processing instruction">PI</abbr></dt>
322      <p>Instead of XML style sheet,          <dd>Use HTML <code>link</code> element with <code>rel</code>
323      <abbr title="processing instruction">PI</abbr>s, you must          attribute set to <code>stylesheet</code> (or,
324      use the HTML <code>link</code> element whose <code>rel</code>          <code>alternate stylesheet</code> for an alternate style
325      attribute is set to <code>stylesheet</code> (or          sheet).</dd>
326      <code>alternate stylesheet</code> for an aleternate style sheet).</p>      <dt><code>&lt;?php?&gt;</code> (PHP code)</dt>
327            <dd>The conformance checker does <em>not</em> support
328            checking for PHP source documents.</dd>
329        <dt>Other processing instructions</dt>
330            <dd>Processing instructions cannot be inserted in an HTML
331            document.  Use XML document or insert
332            <code>ProcessingInstruction</code> node by scripting.</dd>
333        </dl>
334    
335      <p>Web browsers will parse processing instructions as bogus      <p>Web browsers will parse processing instructions as bogus
336      comments.  Some legacy Web browsers, such as IE:mac and      comments.  Some legacy Web browsers, such as IE:mac and
337      some mobile browsers, will display processing instructions      some mobile Web browsers, will display processing instructions
338      as string.</p>      as string.</p>
339    </d:desc>    </d:desc>
340  </d:item>  </d:item>
# Line 258  Web Document Conformance Checker (BETA)< Line 384  Web Document Conformance Checker (BETA)<
384  <d:item name="in body"  <d:item name="in body"
385      class="parse-error">      class="parse-error">
386    <d:message xml:lang="en">Tag <code>&lt;<var>$0</var>&gt;</code>    <d:message xml:lang="en">Tag <code>&lt;<var>$0</var>&gt;</code>
387    is not allowed in a <code>body</code> element.</d:message>    is not allowed in the <code>body</code> element.</d:message>
388    <d:desc xml:lang="en">    <d:desc xml:lang="en">
389      <p>The start or end tag of an element, which      <p>The start or end tag of an element, which
390      cannot be a descendant of <code>body</code> element, appears      cannot be a descendant of <code>body</code> element, appears
# Line 269  Web Document Conformance Checker (BETA)< Line 395  Web Document Conformance Checker (BETA)<
395    
396  <d:item name="in head:head"  <d:item name="in head:head"
397      class="parse-error">      class="parse-error">
398    <d:message xml:lang="en">Start tag <code>&lt;<var>head</var>&gt;</code>    <d:message xml:lang="en">Start tag <code>&lt;head&gt;</code>
399    is not allowed in the <code>head</code> element.</d:message>    is not allowed in the <code>head</code> element.</d:message>
400    <d:desc xml:lang="en">    <d:desc xml:lang="en">
401      <p>There is a start tag <code>&lt;head></code> in the      <p>There is a start tag <code>&lt;head></code> in the
# Line 356  Web Document Conformance Checker (BETA)< Line 482  Web Document Conformance Checker (BETA)<
482      <p>End tag of an element is not found before, for example,      <p>End tag of an element is not found before, for example,
483      an end tag of another element appears or      an end tag of another element appears or
484      the end of the document.  The document is non-conforming.</p>      the end of the document.  The document is non-conforming.</p>
485    
486        <p>Only <code>body</code>, <code>colgroup</code>, <code>dd</code>,
487        <code>dt</code>, <code>head</code>, <code>html</code>, <code>li</code>,
488        <code>ol</code>, <code>option</code>, <code>optgroup</code>,
489        <code>p</code>, <code>rb</code>, <code>rp</code>, <code>rt</code>,
490        <code>tbody</code>, <code>td</code>, <code>tfoot</code>,
491        <code>th</code>, <code>thead</code>, <code>tr</code>,
492        <code>ul</code> end tag can be omitted in HTML documents.
493        For any element except for void element, there must be an explicit
494        end tag.</p>
495    
496        <p>Note that misnesting tags, such as
497        <code class="bad example">&lt;a>&lt;b>&lt;/a>&lt;/b></code>, are not
498        allowed and they also cause this error.</p>
499    </d:desc>    </d:desc>
500  </d:item>  </d:item>
501    
# Line 479  Web Document Conformance Checker (BETA)< Line 619  Web Document Conformance Checker (BETA)<
619      <p>An element appears where it is not allowed.  The document      <p>An element appears where it is not allowed.  The document
620      is non-conforming.</p>      is non-conforming.</p>
621    
     <p><strong>Note</strong>: The conformance checker does  
     <em>not</em> support form elements yet.</p>  
   
622      <p>Possible causes:      <p>Possible causes:
623        <dl class="switch">        <dl class="switch">
624        <dt>If the element with the error is an inline-level element,        <dt>If the element with the error is an inline-level element,
# Line 492  Web Document Conformance Checker (BETA)< Line 629  Web Document Conformance Checker (BETA)<
629    
630            <p>Any inline-level content must be put            <p>Any inline-level content must be put
631            in e.g. paragraph element such as <code>p</code>.</p></dd>            in e.g. paragraph element such as <code>p</code>.</p></dd>
632        <dt>If the element with the error is a block-level element,        <dt>If it is a block-level elements, such as <code>aside</code>,
633        such as <code>div</code>, <code>h<var>n</var></code>, or        <code>div</code>, <code>h<var>n</var></code>,
634        <code>section</code></dt>        <code>p</code>, or <code>section</code></dt>
635            <dd><p>Though some elements such as <code>div</code>,            <dd><dl class="switch">
636            <code>li</code>, and <code>td</code> allow                <dt>If the parent element is <code>div</code>,
637            <em>either one</em> of block-level or inline-level content                <code>li</code>, <code>td</code>, or <code>th</code></dt>
638            is allowed.  If there is a block-level content,                <!-- @@ TODO: more... -->
639            any inline-level content must be put                    <!-- @@ TODO: <p><ul><li><p> -->
640            in e.g. paragraph element such as <code>p</code>.</p></dd>                    <dd><p>The parent element allows <em>either</em>
641                      block-level or inline-level content.  If there is a
642                      block-level content, any inline-level content must be
643                      put in e.g. paragraph element such as <code>p</code>.</p>
644                      <p>For example, an HTML document fragment
645                      <code class="bad example">&lt;div>&lt;p>Hello!&lt;/p> World!&lt;/div></code>
646                      is non-conforming, since a word <q>World!</q> does not belong
647                      to any paragraph.  (If not part of any paragraph, what is
648                      it!?)  A conforming example would be:
649                        <pre class="example"><code>&lt;div>&lt;p>Hello!&lt;/p> &lt;p>World!&lt;/p>&lt;/div></code></pre>
650                      </p></dd>
651                  <dt>If the parent element does <em>not</em> allow
652                  block-level elements as content</dt>
653                      <dd>The element is not allowed to be inserted here.
654                      For example, a <code>div</code> element cannot be
655                      a child of an <code>h1</code> element.</dd>
656              </dl></dd>
657        <dt>If the element with the error is a <code>noscript</code> element</dt>        <dt>If the element with the error is a <code>noscript</code> element</dt>
658            <dd>The <code>noscript</code> element is allowed only in the context            <dd>The <code>noscript</code> element is allowed only in the context
659            where a block-level or inline-level content is expected            where a block-level or inline-level content is expected
# Line 513  Web Document Conformance Checker (BETA)< Line 666  Web Document Conformance Checker (BETA)<
666            element must have an <code>xmlns</code> attribute            element must have an <code>xmlns</code> attribute
667            whose value is set to            whose value is set to
668            <code>http://www.w3.org/1999/xhtml</code>.</p></dd>            <code>http://www.w3.org/1999/xhtml</code>.</p></dd>
669          <dt>If the element with the error is <code>blink</code>,
670          <code>center</code>, or <code>marquee</code> element</dt>
671              <dd>These elements are not part of the HTML standard.
672              Use CSS for styling control.</dd>
673    
674          <dt><code>button</code>, <code>datalist</code>,
675          <code>fieldset</code>, <code>form</code>,
676          <code>input</code>, <code>label</code>,
677          <code>optgroup</code>, <code>option</code>, <code>output</code>,
678          <code>rb</code>, <code>rp</code>, <code>rt</code>, <code>ruby</code>,
679          <code>textarea</code>, or <code>textarea</code> element</dt>
680          <!-- rbc, rtc ? -->
681              <dd>These elements are intentionally not supported by the conformance
682              checker <em>yet</em>.</dd>
683        </dl>        </dl>
684      </p>      </p>
685    </d:desc>    </d:desc>
# Line 545  Web Document Conformance Checker (BETA)< Line 712  Web Document Conformance Checker (BETA)<
712      is non-conforming.</p>      is non-conforming.</p>
713    
714      <p>Some attribute is defined as <i>required</i>.      <p>Some attribute is defined as <i>required</i>.
     For example, any <code>img</code> element must have  
     <code>alt</code> and <code>src</code> attributes specified.  
715      Without required attributes specified, user agents      Without required attributes specified, user agents
716      cannot provide the full functionality of the element      cannot provide full functionality of the element to the user.</p>
717      to the user.</p>  
718        <dl class="switch">
719        <dt>HTML <code>img</code> element</dt>
720            <dd>The <code>src</code> attribute must be specified.
721            Additionally, the <code>alt</code> attribute must be specified
722            in many cases.</dd>
723        <dt>HTML <code>link</code> element</dt>
724            <dd>The <code>rel</code> attribute must be specified.
725            Note that the <code>rev</code> attribute is obsolete.</dd>
726        </dl>
727      </d:desc>
728    </d:item>
729    
730    <d:item name="attribute not allowed" class="attribute-error">
731      <d:message xml:lang="en">Attribute
732      <code><var>{local-name}</var></code> is not allowed for
733      <code><var>{element-local-name}</var></code> element.</d:message>
734      <d:desc xml:lang="en">
735        <p>An attribute is specified where it is not allowed.
736        The document is non-conforming.</p>
737    
738        <dl>
739        <dt>HTML <code>meta</code> element</dt>
740            <dd>For HTML <code>meta</code> element, <em>only one</em> of
741            <code>name</code>, <code>http-equiv</code>, or <code>charset</code>
742            attribute is allowed.</dd>
743        </dl>
744    </d:desc>    </d:desc>
745  </d:item>  </d:item>
746    
# Line 557  Web Document Conformance Checker (BETA)< Line 748  Web Document Conformance Checker (BETA)<
748      class="attribute-error">      class="attribute-error">
749    <d:message xml:lang="en">The <code>xml:lang</code> attribute is not    <d:message xml:lang="en">The <code>xml:lang</code> attribute is not
750    allowed in HTML document.</d:message>    allowed in HTML document.</d:message>
751    <d:desc>    <d:desc xml:lang="en">
752      <p>The <code>xml:lang</code> attribute is not allowed in      <p>The <code>xml:lang</code> attribute is not allowed in
753      HTML document.  The document is non-conforming.</p>      HTML document.  The document is non-conforming.</p>
754    
755      <p>The <code>lang</code> attribute in the <code>null</code>      <p>Use of the <code>xml:lang</code> attribute is conforming
756      namespace for HTML elements is defined as conforming <em>only</em> for      <em>only</em> in XML documents.</p>
     XML document.</p>  
757    
758      <p>To specify natural language information in HTML document,      <p>To specify natural language information in HTML document,
759      use <code>lang</code> attribute instead.</p>      use <code>lang</code> attribute instead.</p>
# Line 604  Web Document Conformance Checker (BETA)< Line 794  Web Document Conformance Checker (BETA)<
794      XML document.  The document is non-conforming.</p>      XML document.  The document is non-conforming.</p>
795    
796      <p>The <code>lang</code> attribute in <code>null</code>      <p>The <code>lang</code> attribute in <code>null</code>
797      namespace for HTML elements is defined as conforming <em>only</em> for      namespace for HTML elements is conforming <em>only</em> in
798      HTML document.</p>      HTML documents.</p>
799    
800      <p>To specify natural language information in XML document,      <p>To specify natural language information in XML document,
801      use <code>xml:lang</code> attribute instead.</p>      use <code>xml:lang</code> attribute instead.</p>
# Line 621  Web Document Conformance Checker (BETA)< Line 811  Web Document Conformance Checker (BETA)<
811      <p>The <code>xmlns</code> attribute in the <code>null</code>      <p>The <code>xmlns</code> attribute in the <code>null</code>
812      namespace is not allowed in XHTML document.</p>      namespace is not allowed in XHTML document.</p>
813    
814      <p>This error should not occur in conformance-checking      <p>This error should not occur in conformance-checking of
815      static documents.</p>      static documents.</p>
816    </d:desc>    </d:desc>
817  </d:item>  </d:item>
# Line 636  Web Document Conformance Checker (BETA)< Line 826  Web Document Conformance Checker (BETA)<
826    <d:message xml:lang="en">This attribute only allow a limited set of    <d:message xml:lang="en">This attribute only allow a limited set of
827    values and the specified value <code><var>{@}</var></code> is not one    values and the specified value <code><var>{@}</var></code> is not one
828    of them.</d:message>    of them.</d:message>
829      <d:desc xml:lang="en">
830        <p>For this attribute only several values are allowed and the
831        value of the attribute is not one of them.  The document
832        is non-conforming.</p>
833    
834        <dl>
835        <dt>HTML <code>meta</code> element, <code>http-equiv</code> attribute</dt>
836            <dd><p>Only <code>Default-Style</code> and <code>Refresh</code>
837            is allowed.</p>
838            <p>Value <code>Content-Type</code> is obsolete; for charset
839            declaration, the <code>charset</code> attribute can be used as:
840            <pre class="html example"><code>&lt;meta charset="<var>charset-name</var>"></code></pre>
841            ... where <var>charset-name</var> is a name of the character encoding
842            of the document, such as <code>utf-8</code>.</p>
843            <p>Values <code>Content-Style-Type</code> and
844            <code>Content-Script-Type</code> are currently not allowed.</p>
845            <p>Value <code>Keywords</code> is not allowed.  Use
846            <code>name</code> attribute instead of <code>http-equiv</code>
847            attribute.</p>
848            <p>Values <code>Expires</code>, <code>Pragma</code>,
849            and <code>Cache-Control</code> are not allowed;
850            use <em>real</em> HTTP header fields for cache control.</p></dd>
851        </dl>
852      </d:desc>
853  </d:item>  </d:item>
854    
855  <d:item name="duplicate ID"  <d:item name="duplicate ID"
# Line 763  Web Document Conformance Checker (BETA)< Line 977  Web Document Conformance Checker (BETA)<
977  &lt;tr>&lt;td rowspan=2>&lt;/td>&lt;/tr>  &lt;tr>&lt;td rowspan=2>&lt;/td>&lt;/tr>
978  &lt;/tbody>  &lt;/tbody>
979  &lt;/table></code></pre>  &lt;/table></code></pre>
980      ... is non-conforming, since the second row contains only      ... since the second row contains only
981      a cell that spans the first and the second rows.</p>      a cell that spans between first and second rows.</p>
982    </d:desc>    </d:desc>
983  </d:item>  </d:item>
984    
# Line 818  Web Document Conformance Checker (BETA)< Line 1032  Web Document Conformance Checker (BETA)<
1032    
1033  </section>  </section>
1034    
1035  <section id="uri-warnings">  <section id="uri-shoulds">
1036  <h2>URI (or IRI) Warnings</h2>  <h2>URI (or IRI) Should-level Errors</h2>
1037    
1038  <d:item name="URI::dot-segment"  <d:item name="URI::dot-segment"
1039      class="should" level="s">      class="should" level="s">
1040    <d:message xml:lang="en">Dot-segment (<code>.</code> or    <d:message xml:lang="en">A dot-segment (<code>.</code> or
1041    <code>..</code>) should not occur in an absolute reference.</d:message>    <code>..</code>) occurs in an absolute reference.</d:message>
1042    <d:desc>    <d:desc>
1043      <p>Dot-segment (<code>.</code> or <code>..</code>) should      <p>Dot-segment (<code>.</code> or <code>..</code>) should
1044      not occur in an absolute reference.</p>      not occur in an absolute reference.</p>
# Line 839  Web Document Conformance Checker (BETA)< Line 1053  Web Document Conformance Checker (BETA)<
1053    
1054  <d:item name="URI::empty path"  <d:item name="URI::empty path"
1055      class="should" level="s">      class="should" level="s">
1056    <d:message xml:lang="en">This IRI should explicitly end with    <d:message xml:lang="en">This IRI does not end with
1057    <code>/</code>.</d:message>    a <code>/</code>.</d:message>
1058  </d:item>  </d:item>
1059    
1060  <d:item name="URI::lowercase hexadecimal digit"  <d:item name="URI::lowercase hexadecimal digit"
1061      class="should" level="s">      class="should" level="s">
1062    <d:message xml:lang="en">Hexadecimal digit in percent-encoding    <d:message xml:lang="en">A lowercase hexadecimal digit is used
1063    should be in lowercase.</d:message>    in percent-encoding.</d:message>
1064    <d:desc xml:lang="en">    <d:desc xml:lang="en">
1065      <p>The hexadecimal digit in percent-encoding string in the IRI      <p>The hexadecimal digit in percent-encoding string in the IRI
1066      is in lowercase.  Though the IRI <em>is</em> conforming,      is in lowercase.  Though the IRI <em>is</em> conforming,
# Line 890  Web Document Conformance Checker (BETA)< Line 1104  Web Document Conformance Checker (BETA)<
1104  <section id="unsupported-messages">  <section id="unsupported-messages">
1105  <h2><i>Unsupported</i> Messages</h2>  <h2><i>Unsupported</i> Messages</h2>
1106    
1107  <d:item name="attribute"  <d:item name="element"
1108      class="unsupported" level="unsupported">      class="unsupported" level="unsupported">
1109    <d:message xml:lang="en">This attribute is not supported by the    <d:message xml:lang="en">Conformance checking for element
1110    conformance checker; <em>it might or might not be conforming</em>.</d:message>    <code><var>{local-name}</var></code> is not supported; <em>it might or
1111      might not be conforming</em>.</d:message>
1112    <d:desc xml:lang="en">    <d:desc xml:lang="en">
1113      <p>The conformant checker does not support the attribute.      <p>The conformant checker does not support the element.
1114      It cannot determine whether the document is conforming or not.</p>      It cannot determine whether the document is conforming or not.</p>
1115    </d:desc>    </d:desc>
1116  </d:item>  </d:item>
1117    
1118  <d:item name="element"  <d:item name="attribute"
1119      class="unsupported" level="unsupported">      class="unsupported" level="unsupported">
1120    <d:message xml:lang="en">This element is not supported by the    <d:message xml:lang="en">Conformance checking for attribute
1121    conformance checker; <em>it might or might not be conforming</em>.</d:message>    <code><var>{local-name}</var></code> of element
1122      <code><var>{element-local-name}</var></code> is not supported;
1123      <em>it might or might not be conforming</em>.</d:message>
1124    <d:desc xml:lang="en">    <d:desc xml:lang="en">
1125      <p>The conformant checker does not support the element.      <p>The conformant checker does not support the attribute.
1126      It cannot determine whether the document is conforming or not.</p>      It cannot determine whether the document is conforming or not.</p>
1127    </d:desc>    </d:desc>
1128  </d:item>  </d:item>
1129    
1130  <d:item name="link type"  <d:item name="link type"
1131      class="unsupported" level="unsupported">      class="unsupported" level="unsupported">
1132    <d:message xml:lang="en">The link type <code><var>$0</var></code> is not    <d:message xml:lang="en">Link type <code><var>$0</var></code> is not
1133    standardized or registered at the time of the release of the conformance    standardized or registered at the time of the release of the conformance
1134    checker; <em>it is non-conforming unless it has now been    checker; <em>it is non-conforming unless it now has been
1135    registered</em>.</d:message>    registered</em>.</d:message>
1136    <d:desc xml:lang="en">    <d:desc xml:lang="en">
1137      <p>The <code>rel</code> attribute is defined as a list of link types.      <p>The <code>rel</code> attribute is defined as a list of link types.
# Line 927  Web Document Conformance Checker (BETA)< Line 1144  Web Document Conformance Checker (BETA)<
1144      The link type might have been added to the registry since then.      The link type might have been added to the registry since then.
1145      In such case it might be conforming.  Otherwise, the      In such case it might be conforming.  Otherwise, the
1146      document is non-conforming.</p>      document is non-conforming.</p>
1147    
1148        <dl>
1149        <dt>Link types <code>shortcut icon</code></dt>
1150            <dd>Link type <code>shortcut</code> is not registered.
1151            Use only <code>icon</code> for linking to so-called favicon.</dd>
1152        </dl>
1153    </d:desc>    </d:desc>
1154  </d:item>  </d:item>
1155    
# Line 976  manakaiIsHTML:0;;XML Document Line 1199  manakaiIsHTML:0;;XML Document
1199  <section id="license">  <section id="license">
1200  <h2>License of This Document</h2>  <h2>License of This Document</h2>
1201    
1202  <p>Copyright 2007 <a href="http://suika.fam.cx/~wakaba/who?">Wakaba</a></p>  <p>Copyright 2007 <a href="http://suika.fam.cx/~wakaba/who?" rel="author" xml:lang="ja">Wakaba</a></p>
1203  <p>This library is free software; you can redistribute it  <p>This document is free software; you can redistribute it
1204  and/or modify it under the same terms as Perl itself.</p>  and/or modify it under the same terms as Perl itself.</p>
1205  </section>  </section>
1206    
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