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revision 1.2 by wakaba, Mon Jul 16 08:38:48 2007 UTC revision 1.3 by wakaba, Mon Jul 16 10:55:11 2007 UTC
# Line 11  Web Document Conformance Checker (BETA)< Line 11  Web Document Conformance Checker (BETA)<
11  <section id="html5-tokenize-error">  <section id="html5-tokenize-error">
12  <h2>HTML5 Parse Errors in Tokenization Stage</h2>  <h2>HTML5 Parse Errors in Tokenization Stage</h2>
13    
14    <div class="section parse-error" id="after-html"><h3>Tag <code>&lt;<var>$0</var>&gt;</code>
15      is not allowed after the end tag <code>&lt;/html&gt;</code>.</h3>
16        <p>The start or end tag of an element appears after the
17        <code>html</code> element has been closed.  The document is
18        non-conforming.</p>
19    
20        <p>Any content of the document other than comments
21        must be put into the <code>html</code> element.</p>
22      </div>
23    
24    <div class="section tokenize-error" id="bare-ero"><h3>The <code>&amp;</code> character must
25      introduce a reference.</h3>
26        <p>An <code>&amp;</code> (<code>U+0026</code>
27        <code class="charname">AMPERSAND</code>) character which
28        is not part of any reference appears in the input stream.
29        The document is non-conforming.</p>
30    
31        <p>The <code>&amp;</code> character must
32        be the first character of a reference:
33          <dl>
34          <dt>Named entity reference</dt>
35              <dd><pre class="html example">
36    <code>&amp;<var>entity-name</var>;</code></pre>
37              where <var>entity-name</var> is the name of the
38              character entity to be referenced.</dd>
39          <dt>Numeric character reference</dt>
40              <dd><pre class="html example">
41    <code>&amp;#<var>d</var>;</code></pre>
42              where <var>d</var> is the decimal representation of
43              the code position of the character to be referenced.</dd>
44          <dt>Hexadecimal character reference</dt>
45              <dd><pre class="html example">
46    <code>&amp;#x<var>h</var>;</code></pre>
47              where <var>h</var> is the hexadecimal representation
48              of the code position of the character to be referenced.</dd>
49          </dl>
50        </p>
51    
52        <p>To represent <code>&amp;</code> as a data character, use
53        named entity reference:
54          <pre class="html example">
55    <code>&amp;amp;</code></pre>
56        </p>
57      </div>
58    
59    <div class="section tokenize-error" id="bare-nero"><h3>The decimal representation of the code position
60      of a character must be specified after <code>&amp;#</code>.</h3>
61        <p>An <code>&amp;</code> (<code>U+0026</code>
62        <code class="charname">AMPERSAND</code>) character immediately
63        followed by a <code>#</code> (<code>U+0023</code>
64        <code>NUMBER SIGN</code>) character which
65        is not part of any reference appears in the input stream.
66        The document is non-conforming.</p>
67    
68        <p>The string <code>&amp;#</code> must be the first two characters
69        <code>NUMBER SIGN</code>) character must be the first two characters
70        of a reference:
71          <dl>
72          <dt>Numeric character reference</dt>
73              <dd><pre class="html example">
74    <code>&amp;#<var>d</var>;</code></pre>
75              where <var>d</var> is the decimal representation of
76              the code point of the character to be referenced.</dd>
77          <dt>Hexadecimal character reference</dt>
78              <dd><pre class="html example">
79    <code>&amp;#x<var>h</var>;</code></pre>
80              where <var>h</var> is the hexadecimal representation
81              of the code point of the character to be referenced.</dd>
82          </dl>
83        </p>
84    
85        <p>To represent <code>&amp;#</code> as data characters, use
86        named entity reference:
87          <pre class="html example">
88    <code>&amp;amp;#</code></pre>
89        </p>
90      </div>
91    
92    <div class="section tokenize-error" id="bare-hcro"><h3>The hexadecimal representation of the code position
93      of a character must be specified after <code>&amp;#x</code>.</h3>
94       <p>The string <code>&amp;#x</code> or <code>&amp;#X</code> which
95       is not part of any reference appears in the input stream.
96        The document is non-conforming.</p>
97    
98        <p>The string <code>&amp;#x</code> or <code>&amp;#X</code> must
99        be the first three characters of a hexadecimal reference:
100          <pre class="html example">
101    <code>&amp;#x<var>h</var>;</code></pre>
102        where <var>h</var> is the hexadecimal representation
103        of the code point of the character to be referenced.</p>
104    
105        <p>To represent <code>&amp;#x</code> as data characters, use
106        named entity reference:
107          <pre class="html example">
108    <code>&amp;amp;#x</code></pre>
109        </p>
110      </div>
111    
112  <div class="section tokenize-error" id="duplicate-attribute"><h3>There are two attributes with same name.</h3>  <div class="section tokenize-error" id="duplicate-attribute"><h3>There are two attributes with same name.</h3>
113      <p>Attributes must be unique in an element.  Specifying      <p>There are more than one attributes with the same
114      attributes with same name more than once is non-conforming.</p>      name in a tag.  The document is non-conforming.</p>
115    
116      <p>The <code>motion</code> attribute is not part of the HTML standard.      <p>The <code>motion</code> attribute is not part of the HTML standard.
117      Use <code>img</code> element with animation GIF instead.</p>      Use <code>img</code> element with animation GIF instead.</p>
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119    
120  <div class="section tokenize-error" id="nestc"><h3>Void element syntax (<code>/&gt;</code>) cannot be  <div class="section tokenize-error" id="nestc"><h3>Void element syntax (<code>/&gt;</code>) cannot be
121    used for this element.</h3>    used for this element.</h3>
122      <p>The void element syntax <code>/&gt;</code> syntax can only be      <p>Void element syntax (<code>/&gt;</code>) must not be used
123        for the element.  The document is non-conforming.</p>
124    
125        <p>The void element syntax can only be
126      used for <code>base</code>, <code>link</code>, <code>meta</code>,      used for <code>base</code>, <code>link</code>, <code>meta</code>,
127      <code>hr</code>, <code>br</code>, <code>img</code>,      <code>hr</code>, <code>br</code>, <code>img</code>,
128      <code>embed</code>, <code>param</code>, <code>area</code>,      <code>embed</code>, <code>param</code>, <code>area</code>,
129      <code>col</code>, and <code>input</code> elements.      <code>col</code>, and <code>input</code> elements.</p>
     For any other elements, using that syntax is non-conforming.</p>  
130    
131      <p>Unlike XML, the void element syntax (<code>/&gt;</code>) has      <p>Note that, unlike in XML, the void element syntax has
132      no effect in HTML.</p>      no effect in HTML.</p>
133    </div>    </div>
134    
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139    
140  <div class="section parse-error" id="after-head"><h3>The <code><var>$0</var></code> element cannot be  <div class="section parse-error" id="after-head"><h3>The <code><var>$0</var></code> element cannot be
141    inserted between <code>head</code> and <code>body</code> elements.</h3>    inserted between <code>head</code> and <code>body</code> elements.</h3>
142      <p>A start tag occurs after the <code>head</code> element is closed      <p>A start tag appears after the <code>head</code> element is closed
143      but before the <code>body</code> element is opened.      but before the <code>body</code> element is opened.
144      The document is non-conforming.</p>      The document is non-conforming.</p>
145    </div>    </div>
146    
147    <div class="section parse-error" id="in-table"><h3>Tag <code>&lt;<var>$0</var>&gt;</code>
148      is not allowed in <code>table</code>.</h3>
149        <p>The start or end tag of an element appears in <code>table</code>.
150        The document is non-conforming.</p>
151    
152        <p>In <code>table</code>, only table related elements
153        are allowed; any other element must be contained in
154        <code>td</code> or <code>th</code> element to form
155        a part of the table, or <code>caption</code> element to create
156        a table caption.</p>
157      </div>
158    
159    <div class="section parse-error" id="in-table:#character"><h3>Data character is not allowed in
160      <code>table</code>.</h3>
161        <p>A data character appears in <code>table</code>.  The document
162        is non-conforming.</p>
163    
164        <p>In <code>table</code>, only table related elements
165        are allowed; any other element and data character must be contained in
166        <code>td</code> or <code>th</code> element to form
167        a part of the table, or <code>caption</code> element to create
168        a table caption.</p>
169      </div>
170    
171    <div class="section parse-error" id="missing-start-tag:tr"><h3>Start tag of <code>tr</code>
172      element is missing.</h3>
173        <p>Start tag of a <code>tr</code> element, which is <em>not</em>
174        optional, is missing.  The document is non-conforming.</p>
175    
176        <p>In a table section, a <code>&lt;tr&gt;</code> start tag
177        must occur before any <code>&lt;td&gt;</code> or
178        <code>&lt;th&gt;</code> start tag.  Though the HTML5 parser
179        implies the <code>&lt;tr&gt;</code> start tag before
180        these start tags, it must be explicitly specified.</p>
181      </div>
182    
183  <div class="section parse-error" id="no-DOCTYPE"><h3>This document does not start with the  <div class="section parse-error" id="no-DOCTYPE"><h3>This document does not start with the
184    <code>DOCTYPE</code> declaration.</h3></div>    <code>DOCTYPE</code>.</h3>
185        <p>The document does not start with a <code>DOCTYPE</code>.
186        The document is non-conforming.</p>
187    
188        <p>An HTML document must start by a <code>DOCTYPE</code>:
189          <pre class="html example">
190    <code>&lt;!DOCTYPE HTML&gt;</code></pre>
191        </p>
192    
193        <p>Only white space characters and comments are allowed
194        before the <code>DOCTYPE</code>.</p>
195      </div>
196    
197  <div class="section parse-error" id="not-closed"><h3>Element <code><var>$0</var></code> is not  <div class="section parse-error" id="not-closed"><h3>Element <code><var>$0</var></code> is not
198    closed.</h3></div>    closed.</h3>
199        <p>End tag of an element is not found before, for example,
200        an end tag of another element appears or
201        the end of the document.  The document is non-conforming.</p>
202      </div>
203    
204  <div class="section parse-error" id="not-HTML5"><h3>This document is written in an old version of  <div class="section parse-error" id="not-HTML5"><h3>This document is written in an old version of
205    HTML.</h3></div>    HTML.</h3>
206        <p>The document contains a <code>DOCTYPE</code> declaration
207        that is different from HTML5 <code>DOCTYPE</code> (i.e. <code>&lt;!DOCTYPE
208        HTML&gt;</code>).  The document is non-conforming.</p>
209    
210        <p>The document might or might not be conformant to
211        some version of HTML.  However, conformance to any HTML
212        specification other than HTML5 provides for no practical
213        convenience, since Web borwsers will parse any
214        HTML document (roughly) as defined in HTML5.</p>
215      </div>
216    
217  <div class="section parse-error" id="unmatched-end-tag"><h3>Element <code><var>$0</var></code> is not  <div class="section parse-error" id="unmatched-end-tag"><h3>Element <code><var>$0</var></code> is not
218    opened.</h3></div>    opened.</h3></div>
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224    
225  <div class="section content-model-error" id="character-not-allowed"><h3>Data character is not allowed in this  <div class="section content-model-error" id="character-not-allowed"><h3>Data character is not allowed in this
226    context.</h3>    context.</h3>
227      <p>A data character occurs where it is not allowed in this      <p>A data character appears where it is not allowed in this
228      context.  The document is non-conforming.</p>      context.  The document is non-conforming.</p>
229    
230      <p>Possible causes:      <p>Possible causes:
# Line 92  Web Document Conformance Checker (BETA)< Line 253  Web Document Conformance Checker (BETA)<
253    element as a child of this element.</h3>    element as a child of this element.</h3>
254      <p>The content model of the element is so defined that it      <p>The content model of the element is so defined that it
255      must contain a <code><var>$0</var></code> child element.      must contain a <code><var>$0</var></code> child element.
256      Without such an element, the document is non-conforming.</p>      The document is non-conforming.</p>
257    
258      <p>For example:      <p>For example:
259        <ul>        <ul>
# Line 108  Web Document Conformance Checker (BETA)< Line 269  Web Document Conformance Checker (BETA)<
269  <div class="section content-model-error" id="child-element-missing:td|th"><h3>There must be a <code>td</code>  <div class="section content-model-error" id="child-element-missing:td|th"><h3>There must be a <code>td</code>
270    or <code>th</code> element as a child of this element.</h3>    or <code>th</code> element as a child of this element.</h3>
271      <p>The <code>tr</code> element must contain at least one      <p>The <code>tr</code> element must contain at least one
272      <code>td</code> or <code>th</code> child element.  Without      <code>td</code> or <code>th</code> child element.  The document
273      such an element, the document is non-conforming.</p>      is non-conforming.</p>
274    </div>    </div>
275    
276  <div class="section content-model-error" id="element-not-allowed"><h3>This element is not allowed in this  <div class="section content-model-error" id="element-not-allowed"><h3>This element is not allowed in this
277    context.</h3>    context.</h3>
278      <p>An element occurs where it is not allowed.  The document      <p>An element appears where it is not allowed.  The document
279      is non-conforming.</p>      is non-conforming.</p>
280    
281        <p><strong>Note</strong>: The conformance checker does
282        <em>not</em> support form elements yet.</p>
283    
284      <p>Possible causes:      <p>Possible causes:
285        <dl>        <dl>
286        <dt>If the erred element is an inline-level element (such        <dt>If the erred element is an inline-level element (such
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310    
311  </section>  </section>
312    
313    <section id="attribute-errors">
314    <h2>Attribute Errors</h2>
315    
316    <div class="section attribute-error" id="attribute-missing"><h3>Required attribute <code><var>$0</var></code>
317      is not specified.</h3>
318        <p>A required attribute is not specified.  The document
319        is non-conforming.</p>
320    
321        <p>Some attribute is defined as <i>required</i>.
322        For example, any <code>img</code> element must have
323        <code>alt</code> and <code>src</code> attributes specified.
324        Without required attributes specified, user agents
325        cannot provide the full functionality of the element
326        to the user.</p>
327      </div>
328    
329    <div class="section attribute-error" id="in-HTML:xml:lang"><h3>The <code>xml:lang</code> attribute is not
330      allowed in HTML document.</h3>
331        <p>The <code>xml:lang</code> attribute is not allowed in
332        HTML document.  The document is non-conforming.</p>
333    
334        <p>The <code>xml:lang</code> attribute in <code>null</code>
335        namespace for HTML elements is defined as conforming only for
336        XML document.</p>
337    
338        <p>To specify natural language information in HTML document,
339        use <code>lang</code> attribute instead.</p>
340        <!-- @@ ISSUE: xml:lang in non-HTML element in DOM5 HTML created
341             from an HTML document? -->
342      </div>
343    
344    <div class="section attribute-error" id="in-XML:charset"><h3>The <code>charset</code> attribute is not
345      allowed in XML document.</h3>
346        <p>The <code>charset</code> attribute of a
347        <code>meta</code> element is not allowed in XML document.
348        The document is non-conforming.</p>
349    
350        <p>To specify the character encoding used for serialization,
351        if necessary, use XML declaration instead:
352          <pre class="xml example">
353    <code>&lt;?xml version=&quot;1.0&quot; encoding=&quot;<var>encoding-name</var>&quot;?&gt;</code></pre>
354        </p>
355      </div>
356    
357    <div class="section attribute-error" id="in-XML:lang"><h3>The <code>lang</code> attribute is not
358      allowed in XML document.</h3>
359        <p>The HTML <code>lang</code> attribute is not allowed in
360        XML document.  The document is non-conforming.</p>
361    
362        <p>The <code>lang</code> attribute in <code>null</code>
363        namespace for HTML elements is defined as conforming only for
364        HTML document.</p>
365    
366        <p>To specify natural language information in XML document,
367        use <code>xml:lang</code> attribute instead.</p>
368      </div>
369    
370    <div class="section attribute-error" id="in-XML:xmlns"><h3>The <code>xmlns</code> attribute
371      in the <code>null</code> namespace is not allowed in
372      XHTML document.  The document is non-conforming.</h3>
373        <p>The <code>xmlns</code> attribute in the <code>null</code>
374        namespace is not allowed in XHTML document.</p>
375    
376        <p>This error should not occur in conformance-checking
377        static documents.</p>
378      </div>
379    
380    </section>
381    
382  <section id="attribute-value-errors">  <section id="attribute-value-errors">
383  <h2>Attribute Value Errors</h2>  <h2>Attribute Value Errors</h2>
384    
385  <div class="section attribute-error" id="enumerated:invalid"><h3>This attribute only allow a limited set of  <div class="section attribute-value-error" id="enumerated:invalid"><h3>This attribute only allow a limited set of
386    values and the specified value is not one of them.</h3></div>    values and the specified value is not one of them.</h3></div>
387    
388    <div class="section attribute-value-error" id="duplicate-ID"><h3>This identifier has already been
389      assigned to another element.</h3></div>
390    
391    <div class="section attribute-value-error" id="reserved-browsing-context-name"><h3>This browsing context name is reserved.</h3></div>
392    
393  </section>  </section>
394    
395  <section id="table-model-errors">  <section id="table-model-errors">
396  <h2>Table Model Errors</h2>  <h2>Table Model Errors</h2>
397    
398    <div class="section table-model-error" id="table:colspan-creates-column-with-no-anchored-cell"><h3>This <code>colspan</code> attribute
399      results in creating a table column that does not contain
400      any cell anchored to it.</h3></div>
401    
402  <div class="section table-model-error" id="table:no-cell-in-last-row"><h3>The table has no cell (<code>td</code> or  <div class="section table-model-error" id="table:no-cell-in-last-row"><h3>The table has no cell (<code>td</code> or
403    <code>th</code>) in the last row.</h3></div>    <code>th</code>) in the last row.</h3></div>
404    
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423    
424  </section>  </section>
425    
426  <section id="uri-errors">  <section id="uri-warnings">
427  <h2>URI (or IRI) Errors</h2>  <h2>URI (or IRI) Warnings</h2>
428    
429    <div class="section should" id="s:URI::dot-segment"><h3>Dot-segment (<code>.</code> or
430      <code>..</code>) should not occur in an absolute reference.</h3>
431        <p>Dot-segment (<code>.</code> or <code>..</code>) should
432        not occur in an absolute reference.</p>
433    
434        <p>In relative references, dot-segments are used to represent
435        the current (<code>.</code>) or the parent (<code>..</code>)
436        hierarchy of the path.  Though they are also allowed
437        in absolute references, it should be resolved to the
438        canonical form before it has been published.</p>
439      </div>
440    
441  <div class="section should" id="s:URI::empty-path"><h3>This IRI should explicitly end with  <div class="section should" id="s:URI::empty-path"><h3>This IRI should explicitly end with
442    <code>/</code>.</h3></div>    <code>/</code>.</h3></div>
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475    
476  </section>  </section>
477    
478  <d:catalog>  
 manakaiCompatMode:quirks;;Quirks Mode  
 manakaiCompatMode:limited quirks;;Limited Quirks Mode  
 manakaiCompatMode:no quirks;;No Quirks Mode  
   
 manakaiIsHTML:1;;HTML Document  
 manakaiIsHTML:0;;XML Document  
 </d:catalog>  
479    
480  <section id="license">  <section id="license">
481  <h2>License of This Document</h2>  <h2>License of This Document</h2>
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