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revision 1.7 by wakaba, Mon Nov 12 13:16:56 2007 UTC revision 1.13 by wakaba, Wed Nov 14 12:28:40 2007 UTC
# Line 17  Line 17 
17  <body class="has-abstract">  <body class="has-abstract">
18    
19  <div class="header">  <div class="header">
20  <h1>manakai's XML Conformance Checking</h1>  <h1>manakai's <abbr>XML</abbr> Conformance Checking</h1>
21  <h2>Working Draft <time datetime=2007-11-12>12 November 2007</time></h2>  <h2>Working Draft <time datetime=2007-11-14>14 November 2007</time></h2>
22    
23  <dl class="versions-uri">  <dl class="versions-uri">
24  <dt>This Version</dt>  <dt>This Version</dt>
# Line 120  In addition, the order in which <a href= Line 120  In addition, the order in which <a href=
120  raised is undefined.</p>  raised is undefined.</p>
121  </div>  </div>
122    
123  <div class="section">  <div class=section id=parsing-xml>
124  <h2 class=ed>Algorithms</h2>  <h2>Parsing <abbr>XML</abbr> Document</h2>
125    
126    <ul>
127    <li>If the <abbr>XML</abbr> document does not begin with an
128    <abbr>XML</abbr> declaration, then raise an
129    <a href="#xml-misc-recommentation" id=xmr-xml-decl><code>xml-misc-recommendation</code></a>.</li>
130    <li>If the replacement text of an entity declaration is
131    <code>&lt;</code>, then raise an
132    <a href="#xml-misc-warning" id=xmw-entity-value-lt><code>xml-misc-warning</code></a>.<!--
133    "strongly advised to avoid" in a Note in Section 2.3 of [XML10], [XML11].
134    --></li>
135    <li>If attribute definition whose <code>Name</code> is
136    <code>xml:space</code> has <span class=ed>declared type different from
137    (default|preserve), (default), or (preserve)</span>, then raise an
138    <a href="#xml-misc-error" id=xme-ad-xml-space><code>xml-misc-error</code></a>.
139    <span class=ed>@@ duplication with
140    <a href="#xml-at-xml-space">#xml-at-xml-space</a>.<!--
141    <!ATTLIST e xml:space CDATA #IMPLIED xml:space CDATA #IMPLIED> --></span></li>
142    <!--
143    
144    #vc-PEinMarkupDecl Validity constraint: Proper Declaration/PE Nesting
145    #wfc-PEinInternalSubset Well-formedness constraint: PEs in Internal Subset
146    #ExtSubset Well-formedness constraint: External Subset
147    #PE-between-Decls Well-formedness constraint: PE Between Declarations
148    
149    @@ Need detailed review, but maybe should be in parsing phase
150    
151    #vc-check-rmd Validity constraint: Standalone Document Declaration
152    
153    -->
154    </ul>
155    </div>
156    
157    <div class="section" id=checking-dom>
158    <h2>Checking <abbr>DOM</abbr></h2>
159    
160  <p>The following algorithms and definitions are applied to  <p>The following algorithms and definitions are applied to
161  <abbr>XML</abbr> documents; especially, they are not applied  <abbr>XML</abbr> documents; especially, they are not applied
162  to <abbr>HTML</abbr> documents.<!-- TODO: ref to HTML5 --></p>  to <abbr>HTML</abbr> documents.<!-- TODO: ref to HTML5 --></p>
163    
164    <div class=section id=error-categories>
165    <h3>Error Classification</h3>
166    
167  <p class=ed>If a <code>Document</code> node has no  <p class=ed>If a <code>Document</code> node has no
168  xml-well-formedness-error, entity-error, and unknown-error,  xml-well-formedness-error, entity-error, and unknown-error,
169  then it is well-formed.  If a well-formed <code>Document</code>  then it is well-formed.  If a well-formed <code>Document</code>
# Line 156  can be easily serialized into a valid XM Line 193  can be easily serialized into a valid XM
193    </dd>    </dd>
194  <dt><dfn id=round-trip-error><code>round-trip-error</code></dfn></dt>  <dt><dfn id=round-trip-error><code>round-trip-error</code></dfn></dt>
195    <dd class=ed>@@</dd>    <dd class=ed>@@</dd>
196    <dt><dfn id=round-trip-warning><code>round-trip-warning</code></dfn></dt>
197      <dd>
198        <p>A <a href="#round-trip-warning"><code>round-trip-warning</code></a>
199        will be raised when a construct, which might not be restored to the same
200        construct when it is serialized and then re-parsed by a conforming
201        processor, is encountered.</p>
202        <div class="example memo">
203          <p>For a <code>Comment</code> node a
204          <a href="#round-trip-warning"><code>round-trip-warning</code></a> will
205          be raised, since <abbr>XML</abbr> processors are not required to
206          report texts of comments for applications.</p>
207        </div>
208      </dd>
209  <dt class=ed><dfn id=unknown-error><code>unknown-error</code></dfn>?</dt>  <dt class=ed><dfn id=unknown-error><code>unknown-error</code></dfn>?</dt>
210    <dd class=ed>@@</dd>    <dd class=ed>@@</dd>
211  <dt><dfn id=xml-misc-error><code>xml-misc-error</code></dt>  <dt><dfn id=xml-misc-error><code>xml-misc-error</code></dt>
# Line 176  can be easily serialized into a valid XM Line 226  can be easily serialized into a valid XM
226    <a href="@@/#dt-fatal">fatal error</a>)    <a href="@@/#dt-fatal">fatal error</a>)
227    that is not classified to any other <a href="#error-category">error    that is not classified to any other <a href="#error-category">error
228    category</a>. <span class=ed>@@ What errors fall into this category?</span></dd>    category</a>. <span class=ed>@@ What errors fall into this category?</span></dd>
229    <dt><dfn id=xml-misc-recommendation><code>xml-misc-recommendation</code></dfn></dt>
230      <dd>
231        <p>An
232        <a href="#xml-misc-recommendation"><code>xml-misc-recommendation</code></a>
233        will be raised if a <em class=rfc2119>SHOULD</em>$B!>(Blevel requirement
234        in <abbr>XML</abbr> specification is not met.</p>
235      </dd>
236  <dt><dfn id=xml-validity-error><code>xml-validity-error</code></dfn></dt>  <dt><dfn id=xml-validity-error><code>xml-validity-error</code></dfn></dt>
237    <dd>A violation of validity constraint in XML document.</dd>    <dd>A violation of validity constraint in XML document.</dd>
238  <dt><dfn id=xml-well-formedness-error><code>xml-well-formedness-error</code></dfn></dt>  <dt><dfn id=xml-well-formedness-error><code>xml-well-formedness-error</code></dfn></dt>
# Line 191  can be easily serialized into a valid XM Line 248  can be easily serialized into a valid XM
248  (MAY or MUST), #dt-compat for compatibility,  (MAY or MUST), #dt-compat for compatibility,
249  #dt-interop for interoperability</p></div>  #dt-interop for interoperability</p></div>
250    
251    </div>
252    
253    <div class=section id=definitions>
254    <h3>Definitions</h3>
255    
256  <p>The <dfn id=xml-version><abbr>XML</abbr> version</dfn> of a node is  <p>The <dfn id=xml-version><abbr>XML</abbr> version</dfn> of a node is
257  the <abbr>XML</abbr> version of the document to which the node belongs.  the <abbr>XML</abbr> version of the document to which the node belongs.
258  For a <code>Documemt</code> node, the <abbr>XML</abbr> version  For a <code>Documemt</code> node, the <abbr>XML</abbr> version
259  of the document is the value of the <code>xmlVersion</code>  of the document is the value of the <code>xmlVersion</code>
260  attribute.  For a <code>DocumentType</code> node whose  attribute of the node.  For a <code>DocumentType</code> node whose
261  <code>ownerDocument</code> is set to <code>null</code>,  <code>ownerDocument</code> attribute is set to <code>null</code>,
262  the <abbr>XML</abbr> version of the document is <code>1.0</code>.  the <abbr>XML</abbr> version of the document is <code>1.0</code><!--
263    since createDocumentType [DOM3CORE] assumes XML 1.0 [XML10TE] -->.
264  For any other node, the <abbr>XML</abbr> version of the document  For any other node, the <abbr>XML</abbr> version of the document
265  is that of the <code>Document</code> node contained in the  is that of the <code>Document</code> node contained in the
266  <code>ownerDocument</code> attribute of the node.</p>  <code>ownerDocument</code> attribute of the node.</p>
267    
268    </div>
269    
270    
271    <div class=section id=checking-components>
272    <h3>Checking Components</h3>
273    
274    <p>The algorithm
275    <dfn id=algorithm-to-validate-an-xml-character-data title-"to validate an XML character data">to
276    validate an <abbr>XML</abbr> character data
277    (<dfn id=var-s><var>s</var></dfn>)</dfn> is defined as following:</p>
278    <ol>
279    <li>If <var>s</var> contains a character that is <em>not</em> in
280    the character class <a href="#class-Char10"><code>Char10</code></a>,
281    then raise an
282    <a href="#xml-well-formedness-error" id=wfe-illegal-char><code>xml-well-formedness-error</code></a>.</li>
283    <li>If <var>s</var> contains a character that is in the character
284    class <a href="#class-CompatChar10"><code>CompatChar10</code></a>,
285    then raise an
286    <a href="#xml-misc-warning" id=xmw-compat-char><code>xml-misc-warning</code></a>.</li>
287    <li>If <var>s</var> contains a character that is in the character
288    class <a href="#class-ControlChar10"><code>ControlChar10</code></a>,
289    then raise an
290    <a href="#xml-misc-warning" id=xmw-control-char><code>xml-misc-warning</code></a>.</li>
291    <li class=ed>@@ XML 1.1 support</li>
292    <li>If <var>s</var> contains a <code class=char>U+000D</code>
293    <code class=charname>CARRIAGE RETURN</code> character, then
294    raise a
295    <a href="#round-trip-error" id=rte-cr><code>round-trip-error</code></a>.
296    <span class=ed>@@ We should not raise duplicate errors for U+000D
297    in attribute values.  In addition, we should support a mode where
298    U+000D will be serialized as &#x000D; (so that no round-trip-error
299    will be raised).</span></li>
300    </ol>
301    
302    <p>The algorithm
303    <dfn id=algorithm-to-validate-a-name title="to validate a Name">to validate a
304    <code>Name</code> (<dfn id=var-name-s><var>s</var></dfn>)</dfn> is defined
305    as following:</p>
306    <ol>
307    <li>If <var>s</var> begins with the string <code>xml</code> (in any
308    case combination), then raise an
309    <a href="#xml-misc-warning" id=xmw-reserved-name><code>xml-misc-warning</code></a>.
310    <span class=ed>@@ except for attribute names <code>xml:lang</code>,
311    <code>xml:space</code>, <code>xml:base</code>, <code>xml:id</code>,
312    <code>xmlns</code>, <code>xmlns:<var>*</var></code>,
313    pi name <code>xml-stylesheet</code>.</span></li>
314    <!-- COLON in Name is a lowercase "should not" in a Note of [XML10],
315    [XML11]. -->
316    <li class=ed>@@</li>
317    </ol>
318    
319    <p>The algorithm
320    <dfn id=algorithm-to-validate-a-ncname title="to validate an NCName">to
321    validate an <code>NCName</code> (<dfn id=var-name><var>name</var></dfn>)</dfn>
322    is defined as following:</p>
323    <ol>
324    <li class=ed>@@</li>
325    </ol>
326    
327    <p>To <dfn id=algorithm-to-validate-a-public-identifier title="validate a public identifier">validate
328    a public identifier (<dfn id=var-pid><var>pid</var></dfn>)</dfn>, the
329    algorithm below <em class=rfc2119>MUST</em> be used:</p>
330    <ol>
331      <li>If <var>pid</var> contains any character
332      that is outside of the range of <code>#x20 | #xD | #xA |
333      [a-zA-Z0-9] | [-'()+,./:=?;!*#@$_%]</code><!-- @@ TODO: formal def -->,
334      then it is an
335      <a href="#xml-well-formedness-error" id=wfe-pubid-char><code>xml-well-formedness-error</code></a>.</li>
336      <li>If <var>pid</var> contains one of <code class=char>U+0009</code>
337      <code class=charname>CHARACTER TABULATION</code>,
338      <code class=char>U+000A</code> <code class=charname>CARRIAGE RETURN</code>,
339      and <code class=char>U+000D</code> <code class=charname>LINE FEED</code>
340      characters, if the first character of <var>pid</var> is
341      <code class=char>U+0020</code> <code class=charname>SPACE</code> character,
342      if the last character of <var>pid</var> is <code class=char>U+0020</code>
343      <code class=charname>SPACE</code> character, or if there is a
344      <code class=char>U+0020</code> <code class=charname>SPACE</code> character
345      immediately followed by another <code class=char>U+0020</code>
346      <code class=charname>SPACE</code> character in <var>pid</var>, then it is a
347      <a href="#round-trip-error" id=rte-pubid-space><code>round-trip-error</code></a>.</li>
348      <li class=ed>@@ Should we check formal-public-identifierness?</li>
349    </ol>
350    
351    </div>
352    
353    <div class=section id=checking-node>
354    <h3>Checking <code>Node</code></h3>
355    
356  <p>The algorithm <dfn title="to check a node" id=algorithm-to-check-a-node>to  <p>The algorithm <dfn title="to check a node" id=algorithm-to-check-a-node>to
357  check a node (<dfn id=var-n><var>n</var></dfn>)</dfn> is defined as  check a node (<dfn id=var-n><var>n</var></dfn>)</dfn> is defined as
358  following:</p>  following:</p>
# Line 214  following:</p> Line 365  following:</p>
365      <li>If the <code>prefix</code> attribute value is different from      <li>If the <code>prefix</code> attribute value is different from
366      <code>null</code>, then <a href="#algorithm-to-validate-a-ncname">validate      <code>null</code>, then <a href="#algorithm-to-validate-a-ncname">validate
367      the <code>prefix</code> attribute value as an <code>NCName</code></a>.</li>      the <code>prefix</code> attribute value as an <code>NCName</code></a>.</li>
368      <li>If the <code>childNodes</code> list of <var>n</var> contains      <li>For each node <dfn id=var-attr-nc><var>n<sub><var>c</var></sub></var></dfn> in the
     a node which is <em>not</em> <code>Text</code> or  
     <code>EntityReference</code> node, then it is a  
     <a href="#xml-well-formedness-error" id=wfe-attr-child><code>xml-well-formedness-error</code></a>.</li>  
     <li>If the <code>childNodes</code> list of <var>n</var> contains  
     an <code>EntityReference</code> node, it is an  
     <a href="#entity-error" id=ee-attr-er><code>entity-error</code></a>.</li>  
     <li><a href="#algorithm-to-check-a-node">Check each node</a>, in  
369      <code>childNodes</code> list of <var>n</var>,      <code>childNodes</code> list of <var>n</var>,
370      which is different from <code>EntityReference</code> recursively.</li>        <ol>
371          <li>If <var>n<sub><var>c</var></sub></var> is <em>not</em> a
372          <code>Text</code> or <code>EntityReference</code> node, then it is an
373          <a href="#xml-well-formedness-error" id=wfe-attr-child><code>xml-well-formedness-error</code></a>.</li>
374          <li>Otherwise, if <var>n<sub><var>c</var></sub></var> is an
375          <code>EntityReference</code> node, then it is an
376          <a href="#entity-error" id=ee-attr-er><code>entity-error</code></a>.</li>
377          <li>Otherwise,
378          <a href="#algorithm-to-check-a-node" title="check a node">check
379          <var>n<sub><var>c</var></sub></var></a> recusrively.</li>
380          </ol></li>
381        <li>If <code>nodeName</code> attribute of <var>n</var> is
382        <code>xml:space</code> <span class=ed>@@ or {xml namespace}:space ?</span>
383        and <code>value</code> attribute of <var>n</var> is neither
384        <code>default</code> nor <code>preserve</code>, then it is an
385        <a href="#xml-misc-error" id=xme-attr-xml-space><code>xml-misc-error</code></a>.<!--
386        Note that <!ATTLIST e xml:space (default|preserve) "a">...
387        <e xml:space="default"/> is conforming and valid. --></li>
388        <li class=ed>@@ xml:lang value is not a language tag [RFC 3066 or its
389        successor] or an empty string, then xml-misc-warning
390        (a "fact"-level error; not an XML error).</li>
391      <li class=ed>@@ <code>specified</code>,      <li class=ed>@@ <code>specified</code>,
392      <code>manakaiAttributeType</code></li>      <code>manakaiAttributeType</code></li>
393        <!-- xml:space MUST be declared to be valid. -->
394      </ol>      </ol>
395    </dd>    </dd>
396  <dt>If <var>n</var> is an <code>AttributeDefinition</code> node</dt>  <dt>If <var>n</var> is an <code>AttributeDefinition</code> node</dt>
397    <dd class=ed></dd>    <dd>
398        <ol>
399        <li class=ed></li>
400        <li>If <code>nodeName</code> attribute of <var>n</var> is
401        <code>xml:space</code> <span class=ed>@@ or {xml namespace}:space ?</span>
402        and <span class=ed>its declared type is different from (default|preserve),
403        (default), or (preserve)</span>, then raise an
404        <a href="#xml-misc-error" id=xme-at-xml-space><code>xml-misc-error</code></a>.</li>
405        <li>For each node <dfn id=var-ad-nc><var>n<sub><var>c</var></sub></var></dfn> in the
406        <code>childNodes</code> list of <var>n</var>,
407          <ol>
408          <li>If <var>n<sub><var>c</var></sub></var> is <em>not</em> a
409          <code>Text</code> or <code>EntityReference</code> node, then it is an
410          <a href="#xml-well-formedness-error" id=wfe-at-child><code>xml-well-formedness-error</code></a>.</li>
411          <li>Otherwise, if <var>n<sub><var>c</var></sub></var> is an
412          <code>EntityReference</code> node, then it is an
413          <a href="#entity-error" id=ee-at-er><code>entity-error</code></a>.</li>
414          <li>Otherwise,
415          <a href="#algorithm-to-check-a-node" title="check a node">check
416          <var>n<sub><var>c</var></sub></var></a> recusrively.</li>
417          </ol></li>
418        </ol>
419      </dd>
420  <dt>If <var>n</var> is a <code>CDATASection</code> node</dt>  <dt>If <var>n</var> is a <code>CDATASection</code> node</dt>
421    <dd>    <dd>
422      <ol>      <ol>
# Line 237  following:</p> Line 424  following:</p>
424      <code>data</code> attribute value as an <abbr>XML</abbr> character      <code>data</code> attribute value as an <abbr>XML</abbr> character
425      data</a>.</li>      data</a>.</li>
426      <li>If the <code>data</code> attribute value contains      <li>If the <code>data</code> attribute value contains
427      a string <code>]]></code>, then it is a      a string <code>]]></code>, then raise an
428      <a href="#xml-well-formedness-error" id=wfe-cs-mse><code>xml-well-formedness-error</code></a>.</li>      <a href="#xml-well-formedness-error" id=wfe-cs-mse><code>xml-well-formedness-error</code></a>.<!-- "for compatibility" --></li>
429      <li>If the <code>childNodes</code> list of <var>n</var> contains      <li>If the <code>childNodes</code> list of <var>n</var> contains
430      any nodes, they are in      any nodes, they are in
431      <a href="#xml-well-formedness-error" id=wfe-cs-child><code>xml-well-formedness-error</code></a>s.</li>      <a href="#xml-well-formedness-error" id=wfe-cs-child><code>xml-well-formedness-error</code></a>.</li>
432      </ol>      </ol>
433    </dd>    </dd>
434  <dt>If <var>n</var> is a <code>Comment</code> node</dt>  <dt>If <var>n</var> is a <code>Comment</code> node</dt>
435    <dd>    <dd>
436      <ol>      <ol>
437        <li>Raise an
438        <a href="#round-trip-warning" id=rtw-comment><code>round-trip-warning</code></a>.</li>
439      <li><a href="#algorithm-to-validate-an-xml-character-data">Validate the      <li><a href="#algorithm-to-validate-an-xml-character-data">Validate the
440      <code>data</code> attribute value as an <abbr>XML</abbr> character      <code>data</code> attribute value as an <abbr>XML</abbr> character
441      data</a>.</li>      data</a>.</li>
442      <li>If the <code>data</code> attribute value contains      <li>If the <code>data</code> attribute value contains
443      a string <code>--</code>, or if it ends with a character      a string <code>--</code>, or if it ends with a character
444      <code>-</code>, then it is a      <code>-</code>, then raise an
445      <a href="#xml-well-formedness-error" id=wfe-comment-com><code>xml-well-formedness-error</code></a>.</li>      <a href="#xml-well-formedness-error" id=wfe-comment-com><code>xml-well-formedness-error</code></a>.<!--
446        "for compatibility" --></li>
447      <li>If the <code>childNodes</code> list of <var>n</var> contains      <li>If the <code>childNodes</code> list of <var>n</var> contains
448      any nodes, they are in      any nodes, they are in
449      <a href="#xml-well-formedness-error" id=wfe-comment-child><code>xml-well-formedness-error</code></a>s.</li>      <a href="#xml-well-formedness-error" id=wfe-comment-child><code>xml-well-formedness-error</code></a>.</li>
450      </ol>      </ol>
451    </dd>    </dd>
452  <dt>If <var>n</var> is a <code>Document</code> node</dt>  <dt>If <var>n</var> is a <code>Document</code> node</dt>
# Line 267  following:</p> Line 457  following:</p>
457      then it is an <code class=ed>unknown-error?</code>.</li>      then it is an <code class=ed>unknown-error?</code>.</li>
458      <li>If the <code>xmlEncoding</code> attribute value does <em>not</em>      <li>If the <code>xmlEncoding</code> attribute value does <em>not</em>
459      match to <code>[A-Za-z] ([A-Za-z0-9._] | '-')*</code>      match to <code>[A-Za-z] ([A-Za-z0-9._] | '-')*</code>
460      <span class=ed>@@ formal def</span>, then it is a      <span class=ed>@@ formal def</span>, then it is an
461      <a href="#xml-well-formedness-error" id=wfe-encoding><code>xml-well-formedness-error</code></a>.</li>      <a href="#xml-well-formedness-error" id=wfe-encoding><code>xml-well-formedness-error</code></a>.</li>
462      <li>The <code>childNodes</code> list of <var>n</var> have to      <li>The <code>childNodes</code> list of <var>n</var> have to
463      consist of zero or more <code>Comment</code> and/or      consist of zero or more <code>Comment</code> and/or
# Line 277  following:</p> Line 467  following:</p>
467      <code>ProcessingInstruction</code> nodes, followed by      <code>ProcessingInstruction</code> nodes, followed by
468      an <code>Element</code> node, followed      an <code>Element</code> node, followed
469      by zero or more <code>Comment</code> and/or      by zero or more <code>Comment</code> and/or
470      <code>ProcessingInstruction</code> nodes.  Any violation to this is a      <code>ProcessingInstruction</code> nodes.  Any violation to this is an
471      <a href="#xml-well-formedness-error" id=wfe-document-child><code>xml-well-formedness-error</code></a>.</li>      <a href="#xml-well-formedness-error" id=wfe-document-child><code>xml-well-formedness-error</code></a>.</li>
472      <li><a href="#algorithm-to-check-a-node">Check each node</a>, in      <li>For each node <dfn id=var-document-nc><var>n<sub><var>c</var></sub></var></dfn>
473      <code>childNodes</code> list of <var>n</var>,      in the <code>childNodes</code> list of <var>n</var>,
474      which is different from <code>EntityReference</code> recursively.</li>        <ol>
475          <li>If <var>n<sub><var>c</var></sub></var> is <em>not</em> an
476          <code>EntityReference</code> node, then
477          <a href="#algorithm-to-check-a-node" title="check a node">check
478          <var>n<sub><var>c</var></sub></var></a> recursively.</li>
479          </ol></li>
480      <li class=ed>@@ <code>allDeclarationsProcessed</code></li>      <li class=ed>@@ <code>allDeclarationsProcessed</code></li>
481      </ol>      </ol>
482    </dd>    </dd>
483  <dt>If <var>n</var> is a <code>DocumentFragment</code> node</dt>  <dt>If <var>n</var> is a <code>DocumentFragment</code> node</dt>
484    <dd>    <dd>
485      <ol>      <ol>
486      <li>If the <code>childNodes</code> list of <var>n</var> contains      <li>For each node <dfn id=var-df-nc><var>n<sub><var>c</var></sub></var></dfn>
487      a node which is <em>not</em> <code>Element</code>,      in the <code>childNodes</code> list of <var>n</var>,
488      <code>Text</code>, <code>CDATASection</code>, <code>Comment</code>,        <ol>
489      <code>ProcessingInstruction</code>, or        <li>If <var>n<sub><var>c</var></sub></var> is <em>not</em> an
490      <code>EntityReference</code> node, then it is a        <code>Element</code>, <code>Text</code>, <code>CDATASection</code>,
491      <a href="#xml-well-formedness-error" id=wfe-df-child><code>xml-well-formedness-error</code></a>.</li>        <code>Comment</code>, <code>ProcessingInstruction</code>, or
492      <li>If the <code>childNodes</code> list of <var>n</var> contains        <code>EntityReference</code> node, then it is an
493      an <code>EntityReference</code> node, it is an        <a href="#xml-well-formedness-error" id=wfe-df-child><code>xml-well-formedness-error</code></a>.</li>
494      <a href="#entity-error" id=ee-df-er><code>entity-error</code></a>.</li>        <li>Otherwise, if <var>n<sub><var>c</var></sub></var> is an
495      <li><a href="#algorithm-to-check-a-node">Check each node</a>, in        <code>EntityReference</code> node, then it is an
496      <code>childNodes</code> list of <var>n</var>        <a href="#entity-error" id=ee-df-er><code>entity-error</code></a>.</li>
497      which is different from <code>EntityReference</code> recursively.</li>        <li>Otherwise,
498          <a href="#algorithm-to-check-a-node" title="check a node">check
499          <var>n<sub><var>c</var></sub></var></a> recursively.</li>
500          </ol></li>
501      </ol>      </ol>
502    </dd>    </dd>
503  <dt>If <var>n</var> is a <code>DocumentType</code> node</dt>  <dt>If <var>n</var> is a <code>DocumentType</code> node</dt>
# Line 307  following:</p> Line 505  following:</p>
505      <ol>      <ol>
506      <li><a href="#algorithm-to-validate-a-ncname">Validate the      <li><a href="#algorithm-to-validate-a-ncname">Validate the
507      <code>nodeName</code> attribute value as an <code>NCName</code></a>.</li>      <code>nodeName</code> attribute value as an <code>NCName</code></a>.</li>
508        <li>Follow the following substeps:
509          <ol>
510          <li>If <code>ownerDocument</code> attribute of <var>n</var> is
511          <code>null</code>, then abort these substeps.</li>
512          <li>If <code>documentElement</code> attribute of the node
513          set to <code>ownerDocument</code> attribute of <var>n</var> is
514          <code>null</code>, then abort these substeps.</li>
515          <li>If <code>nodeName</code> attribute of the node set to
516          <code>documentElement</code> attribute of the node set to
517          <code>ownerDocument</code> attribute of <var>n</var> is
518          different from <code>nodeName</code> of <var>n</var>,
519          then raise an
520          <a href="#xml-validity-error" id=vc-roottype><code>xml-validity-error</code></a>.</li></li>
521          </ol>
522        </li>
523      <li><a href="#algorithm-to-validate-a-public-identifier" title="validate a public identifier">Validate      <li><a href="#algorithm-to-validate-a-public-identifier" title="validate a public identifier">Validate
524      the <code>publicId</code> attribute value as a public identifier</a>.</li>      the <code>publicId</code> attribute value as a public identifier</a>.</li>
525      <li>If the <code>systemId</code> attribute value contains      <li>If the <code>systemId</code> attribute value contains
526      both <code>"</code> and <code>'</code> characters, it is a      both <code>"</code> and <code>'</code> characters, it is a
527      <a href="#xml-well-formedness-error" id=wfe-dt-system-id><code>xml-well-formedness-error</code></a>.</li>      <a href="#xml-well-formedness-error" id=wfe-dt-system-id><code>xml-well-formedness-error</code></a>.</li>
528      <!-- publicId = non-null and systemId = null -->      <!-- publicId = non-null and systemId = null -->
529      <li>If the <code>childNodes</code> list of <var>n</var> contains      <li>For each node <dfn id=var-dt-nc><var>n<sub><var>c</var></sub></var></dfn>
530      a node which is <em>not</em> <code>ProcessingInstruction</code> node,      in the <code>childNodes</code> list of <var>n</var>,
531      then it is a        <ol>
532      <a href="#xml-well-formedness-error" id=wfe-dt-child><code>xml-well-formedness-error</code></a>.        <li>If <var>n<sub><var>c</var></sub></var> is <em>not</em> a
533      <span class=ed>@@ ref to manakai's extensions</span></li>        <code>ProcessingInstruction</code> node, then it is an
534      <li><a href="#algorithm-to-check-a-node">Check each node</a>, in        <a href="#xml-well-formedness-error" id=wfe-dt-child><code>xml-well-formedness-error</code></a>.
535      <code>childNodes</code> list of <var>n</var>,        <span class=ed>@@ ref to manakai's extensions</span></li>
536      which is different from <code>EntityReference</code> recursively.</li>        <li>Otherwise, <!-- if n_c is not an EntityReference node, -->
537          <a href="#algorithm-to-check-a-node" title="check a node">check
538          <var>n<sub><var>c</var></sub></var></a> recusrively.</li>
539          </ol></li>
540      <li class=ed>@@ <code>entities</code>, <code>notations</code>,      <li class=ed>@@ <code>entities</code>, <code>notations</code>,
541      <code>elementTypes</code>, externally declared?</li>      <code>elementTypes</code>, externally declared?</li>
542      </ol>      </ol>
# Line 333  following:</p> Line 549  following:</p>
549      <li>If the <code>prefix</code> attribute value is different from      <li>If the <code>prefix</code> attribute value is different from
550      <code>null</code>, then <a href="#algorithm-to-validate-a-ncname">validate      <code>null</code>, then <a href="#algorithm-to-validate-a-ncname">validate
551      the <code>prefix</code> attribute value as an <code>NCName</code></a>.</li>      the <code>prefix</code> attribute value as an <code>NCName</code></a>.</li>
552      <li>If the <code>childNodes</code> list of <var>n</var> contains      <li>For each node <dfn id=var-element-nc><var>n<sub><var>c</var></sub></var></dfn>
553      a node which is <em>not</em> <code>Element</code>,      in the <code>childNodes</code> list of <var>n</var>,
554      <code>Text</code>, <code>CDATASection</code>, <code>Comment</code>,        <ol>
555      <code>ProcessingInstruction</code>, or        <li>If <var>n<sub><var>c</var></sub></var> is <em>not</em> an
556      <code>EntityReference</code> node, then it is a        <code>Element</code>,
557      <a href="#xml-well-formedness-error" id=wfe-element-child><code>xml-well-formedness-error</code></a>.</li>        <code>Text</code>, <code>CDATASection</code>, <code>Comment</code>,
558      <li>If the <code>childNodes</code> list of <var>n</var> contains        <code>ProcessingInstruction</code>, or
559      an <code>EntityReference</code> node, it is an        <code>EntityReference</code> node, then it is an
560      <a href="#entity-error" id=ee-element-er><code>entity-error</code></a>.</li>        <a href="#xml-well-formedness-error" id=wfe-element-child><code>xml-well-formedness-error</code></a>.</li>
561      <li><a href="#algorithm-to-check-a-node">Check each node</a>, in        <li>Otherwise, if <var>n<sub><var>c</var></sub></var> is an
562      <code>childNodes</code> list of <var>n</var>,        <code>EntityReference</code> node, then it is an
563      which is different from <code>EntityReference</code> recursively.</li>        <a href="#entity-error" id=ee-element-er><code>entity-error</code></a>.</li>
564          <li>Otherwise,
565          <a href="#algorithm-to-check-a-node" title="check a node">check
566          <var>n<sub><var>c</var></sub></var></a> recursively.</li>
567          </ol></li>
568      </ol>      </ol>
569    </dd>    </dd>
570  <dt>If <var>n</var> is an <code>ElementTypeDefinition</code> node</dt>  <dt>If <var>n</var> is an <code>ElementTypeDefinition</code> node</dt>
571    <dd class=ed></dd>    <dd>
572        <ol>
573        <li class=ed></li>
574        <li>If the <code>childNodes</code> list of <var>n</var> contains
575        any nodes, they are in
576        <a href="#xml-well-formedness-error" id=wfe-et-child><code>xml-well-formedness-error</code></a>.</li>
577        </ol>
578      </dd>
579  <dt>If <var>n</var> is an <code>Entity</code> node</dt>  <dt>If <var>n</var> is an <code>Entity</code> node</dt>
580    <dd>    <dd>
581      <ol>      <ol>
# Line 362  following:</p> Line 589  following:</p>
589      <a href="#xml-well-formedness-error" id=wfe-dt-system-id><code>xml-well-formedness-error</code></a>.</li>      <a href="#xml-well-formedness-error" id=wfe-dt-system-id><code>xml-well-formedness-error</code></a>.</li>
590      <!-- publicId = non-null and systemId = null -->      <!-- publicId = non-null and systemId = null -->
591      <li class=ed>@@ <code>notationName</code></li>      <li class=ed>@@ <code>notationName</code></li>
592      <li>If the <code>childNodes</code> list of <var>n</var> contains      <li>For each node <dfn id=var-entity-nc><var>n<sub><var>c</var></sub></var></dfn>
593      a node which is <em>not</em> <code>Element</code>,      in the <code>childNodes</code> list of <var>n</var>,
594      <code>Text</code>, <code>CDATASection</code>, <code>Comment</code>,        <ol>
595      <code>ProcessingInstruction</code>, or        <li>If <var>n<sub><var>c</var></sub></var> is <em>not</em> an
596      <code>EntityReference</code> node, then it is a        <code>Element</code>,
597      <a href="#xml-well-formedness-error" id=wfe-entity-child><code>xml-well-formedness-error</code></a>.</li>        <code>Text</code>, <code>CDATASection</code>, <code>Comment</code>,
598      <li>If the <code>childNodes</code> list of <var>n</var> contains        <code>ProcessingInstruction</code>, or <code>EntityReference</code>
599      an <code>EntityReference</code> node, it is an        node, then it is an
600      <a href="#entity-error" id=ee-er-er><code>entity-error</code></a>.</li>        <a href="#xml-well-formedness-error" id=wfe-entity-child><code>xml-well-formedness-error</code></a>.</li>
601      <li><a href="#algorithm-to-check-a-node">Check each node</a>, in        <li>Otherwise, if <var>n<sub><var>c</var></sub></var> is an
602      <code>childNodes</code> list of <var>n</var>,        <code>EntityReference</code> node, then it is an
603      which is different from <code>EntityReference</code> recursively.</li>        <a href="#entity-error" id=ee-er-er><code>entity-error</code></a>.</li>
604          <li>Otherwise,
605          <a href="#algorithm-to-check-a-node" title="check a node">check
606          <var>n<sub><var>c</var></sub></var></a> recursively.</li>
607          </ol></li>
608      </ol>      </ol>
609    </dd>    </dd>
610  <dt>If <var>n</var> is an <code>EntityReference</code> node</dt>  <dt>If <var>n</var> is an <code>EntityReference</code> node</dt>
# Line 382  following:</p> Line 613  following:</p>
613      <li>An <a href="#entity-error" id=ee-er-node><code>entity-error</code></a>.</li>      <li>An <a href="#entity-error" id=ee-er-node><code>entity-error</code></a>.</li>
614      <li><a href="#algorithm-to-validate-a-ncname">Validate the      <li><a href="#algorithm-to-validate-a-ncname">Validate the
615      <code>nodeName</code> attribute value as an <code>NCName</code></a>.</li>      <code>nodeName</code> attribute value as an <code>NCName</code></a>.</li>
616      <li>If the <code>childNodes</code> list of <var>n</var> contains      <li>For each node <dfn id=var-er-nc><var>n<sub><var>c</var></sub></var></dfn>
617      a node which is <em>not</em> <code>Element</code>,      in the <code>childNodes</code> list of <var>n</var>,
618      <code>Text</code>, <code>CDATASection</code>, <code>Comment</code>,        <ol>
619      <code>ProcessingInstruction</code>, or        <li>If <var>n<sub><var>c</var></sub></var> is <em>not</em> an
620      <code>EntityReference</code> node, then it is a        <code>Element</code>,
621      <a href="#xml-well-formedness-error" id=wfe-er-child><code>xml-well-formedness-error</code></a>.</li>        <code>Text</code>, <code>CDATASection</code>, <code>Comment</code>,
622      <li>If the <code>childNodes</code> list of <var>n</var> contains        <code>ProcessingInstruction</code>, or <code>EntityReference</code>
623      an <code>EntityReference</code> node, it is an        node, then it is an
624      <a href="#entity-error" id=ee-entity-er><code>entity-error</code></a>.</li>        <a href="#xml-well-formedness-error" id=wfe-er-child><code>xml-well-formedness-error</code></a>.</li>
625      <li><a href="#algorithm-to-check-a-node">Check each node</a>, in        <li>Otherwise, if <var>n<sub><var>c</var></sub></var> is <em>not</em> an
626      <code>childNodes</code> list of <var>n</var>,        <code>EntityReference</code> node, then it is an
627      which is different from <code>EntityReference</code> recursively.</li>        <a href="#entity-error" id=ee-entity-er><code>entity-error</code></a>.</li>
628          <li>Otherwise,
629          <a href="#algorithm-to-check-a-node" title="check a node">check
630          <var>n<sub><var>c</var></sub></var></a> recursively.</li>
631          </ol></li>
632      </ol>      </ol>
633    </dd>    </dd>
634  <dt>If <var>n</var> is a <code>Notation</code> node</dt>  <dt>If <var>n</var> is a <code>Notation</code> node</dt>
# Line 408  following:</p> Line 643  following:</p>
643      <a href="#xml-well-formedness-error" id=wfe-dt-system-id><code>xml-well-formedness-error</code></a>.</li>      <a href="#xml-well-formedness-error" id=wfe-dt-system-id><code>xml-well-formedness-error</code></a>.</li>
644      <li>If the <code>childNodes</code> list of <var>n</var> contains      <li>If the <code>childNodes</code> list of <var>n</var> contains
645      any nodes, they are in      any nodes, they are in
646      <a href="#xml-well-formedness-error" id=wfe-notation-child><code>xml-well-formedness-error</code></a>s.</li>      <a href="#xml-well-formedness-error" id=wfe-notation-child><code>xml-well-formedness-error</code></a>.</li>
647      </ol>      </ol>
648    </dd>    </dd>
649  <dt>If <var>n</var> is a <code>ProcessingInstruction</code> node</dt>  <dt>If <var>n</var> is a <code>ProcessingInstruction</code> node</dt>
650    <dd>    <dd>
651      <ol>      <ol>
652      <li><a href="#algorithm-to-validate-a-ncname">Validate the      <li>If the <code>target</code> attribute value matches to the string
653      <code>target</code> attribute value as an <code>NCName</code></a>.</li>      <code>xml</code> in any case combination, then raise a
     <li>If the <code>target</code> attribute value matches to  
     <code>XML</code> case-insensitively, then it is a  
654      <a href="#xml-well-formedness-error" id=wfe-pi-xml><code>xml-well-formedness-error</code></a>.</li>      <a href="#xml-well-formedness-error" id=wfe-pi-xml><code>xml-well-formedness-error</code></a>.</li>
655      <li><a href="#algorithm-to-validate-an-xml-character-data">Validate the      <li>Otherwise, <a href="#algorithm-to-validate-a-ncname">validate the
656      <code>data</code> attribute value as an <abbr>XML</abbr> character      <code>target</code> attribute value as an <code>NCName</code></a>.</li>
657        <li>Then,
658        <a href="#algorithm-to-validate-an-xml-character-data" title="validate an XML character data">validate
659        the <code>data</code> attribute value as an <abbr>XML</abbr> character
660      data</a>.</li>      data</a>.</li>
661      <li>If the <code>data</code> attribute value contains      <li>If the <code>data</code> attribute value contains a string
662      a string <code>?></code>, or starts with either      <code>?></code>, then raise a
663      <code class=char>U+0009</code>, <code class=char>U+000A</code>,      <a href="#xml-well-formedness-error" id=wfe-pi-pic><code>xml-well-formedness-error</code></a>.</li>
664      <code class=char>U+000D</code>, or <code class=char>U+0020</code>      <li>If the <code>data</code> attribute value starts with either
665      character, then it is a      <code class=char>U+0009</code> <code class=charname>CHARACTER
666      <a href="#round-trip-error" id=rte-pi-data><code>round-trip-error</code></a>.</li>      TABULATION</code>, <code class=char>U+000A</code> <code class=charname>LINE
667        FEED</code>, <code class=char>U+000D</code> <code class=charname>CARRIAGE
668        RETURN</code>, or <code class=char>U+0020</code>
669        <code class=charname>SPACE</code> character, then raise a
670        <a href="#round-trip-error" id=rte-pi-s><code>round-trip-error</code></a>.</li>
671      <li>If the <code>childNodes</code> list of <var>n</var> contains      <li>If the <code>childNodes</code> list of <var>n</var> contains
672      any nodes, they are in      any nodes, then raise an
673      <a href="#xml-well-formedness-error" id=wfe-pi-child><code>xml-well-formedness-error</code></a>s.</li>      <a href="#xml-well-formedness-error" id=wfe-pi-child><code>xml-well-formedness-error</code></a>.</li>
674      </ol>      </ol>
675    </dd>    </dd>
676  <dt>If <var>n</var> is a <code>Text</code> node</dt>  <dt>If <var>n</var> is a <code>Text</code> node</dt>
# Line 441  following:</p> Line 681  following:</p>
681      data</a>.</li>      data</a>.</li>
682      <li>If the <code>childNodes</code> list of <var>n</var> contains      <li>If the <code>childNodes</code> list of <var>n</var> contains
683      any nodes, they are in      any nodes, they are in
684      <a href="#xml-well-formedness-error" id=wfe-text-child><code>xml-well-formedness-error</code></a>s.</li>      <a href="#xml-well-formedness-error" id=wfe-text-child><code>xml-well-formedness-error</code></a>.</li>
685      </ol>      </ol>
686    </dd>    </dd>
687  <dt>Otherwise</dt>  <dt>Otherwise</dt>
688    <dd><span class=ed>xml-well-formedness-error?  unknown-error?</span></dd>    <dd><span class=ed>xml-well-formedness-error?  unknown-error?</span></dd>
689  </dl>  </dl>
690    
 <p>The algorithm  
 <dfn id=algorithm-to-validate-an-xml-character-data title-"to validate an XML character data">to  
 validate an <abbr>XML</abbr> character data  
 (<dfn id=var-s><var>s</var></dfn>)</dfn> is defined as following:</p>  
 <ol>  
 <li class=ed>@@</li>  
 </ol>  
   
 <p>The algorithm  
 <dfn id=algorithm-to-validate-a-name title="to validate a Name">to validate a  
 <code>Name</code> (<dfn id=var-name><var>name</var></dfn>)</dfn> is defined  
 as following:</p>  
 <ol>  
 <li class=ed>@@</li>  
 </ol>  
   
 <p>The algorithm  
 <dfn id=algorithm-to-validate-a-ncname title="to validate an NCName">to  
 validate an <code>NCName</code> (<dfn id=var-name><var>name</var></dfn>)</dfn>  
 is defined as following:</p>  
 <ol>  
 <li class=ed>@@</li>  
 </ol>  
   
 <p>To <dfn id=algorithm-to-validate-a-public-identifier title="validate a public identifier">validate  
 a public identifier (<dfn id=var-pid><var>pid</var></dfn>)</dfn>, the  
 algorithm below <em class=rfc2119>MUST</em> be used:</p>  
 <ol>  
   <li>If <var>pid</var> contains any character  
   that is outside of the range of <code>#x20 | #xD | #xA |  
   [a-zA-Z0-9] | [-'()+,./:=?;!*#@$_%]</code><!-- @@ TODO: formal def -->,  
   then it is an  
   <a href="#xml-well-formedness-error" id=wfe-pubid-char><code>xml-well-formedness-error</code></a>.</li>  
   <li>If <var>pid</var> contains one of <code class=char>U+0009</code>  
   <code class=charname>CHARACTER TABULATION</code>,  
   <code class=char>U+000A</code> <code class=charname>CARRIAGE RETURN</code>,  
   and <code class=char>U+000D</code> <code class=charname>LINE FEED</code>  
   characters, if the first character of <var>pid</var> is  
   <code class=char>U+0020</code> <code class=charname>SPACE</code> character,  
   if the last character of <var>pid</var> is <code class=char>U+0020</code>  
   <code class=charname>SPACE</code> character, or if there is a  
   <code class=char>U+0020</code> <code class=charname>SPACE</code> character  
   immediately followed by another <code class=char>U+0020</code>  
   <code class=charname>SPACE</code> character in <var>pid</var>, then it is a  
   <a href="#round-trip-error" id=rte-pubid-space><code>round-trip-error</code></a>.</li>  
   <li class=ed>@@ Should we check formal-public-identifierness?</li>  
 </ol>  
   
691  </div>  </div>
692    
693  <div class="section" id="examples">  </div>
 <h2>Examples</h2>  
   
 <p class=section-info>This section is <em>non$B!>(Bnormative</em>.</p>  
694    
695  <div class="ed issue">  <div id=classes class=section>
696    <h2>Character Classes</h2>
697    
698  <div class="example figure block">  <p>This section defines a couple of character classes.
699  <div class="caption">...</div>  These classes are referred to by algorithms specified above.</p>
700    
701  <pre><code>...</code></pre>  <p>Character class <dfn id=class-Char10><code>Char10</code></dfn>
702    contains the following characters:</p>
703    <ul>
704    <li><code class=char>U+0009</code> <code class=charname>CHARACTER
705    TABULATION</code></li>
706    <li><code class=char>U+000A</code> <code class=charname>LINE FEED</code></li>
707    <li><code class=char>U+000D</code> <code class=charname>CARRIAGE
708    RETURN</code></li>
709    <li><code class=char>U+0020</code> <code class=charname>SPACE</code>
710    .. <code class=char>U+D7FF</code></li>
711    <li><code class=char>U+E000</code> .. <code class=char>U+FFFD</code>
712    <code class=charname>REPLACEMENT CHARACTER</code></li>
713    <li><code class=char>U+10000</code> .. <code class=char>U+10FFFF</code></li>
714    </ul>
715    <div class="note memo">
716    <p>This character class contains all characters allowed in the production rule
717    <a href="http://www.w3.org/TR/2006/REC-xml-20060816/#NT-Char"><code>Char</code></a>
718    of <abbr>XML</abbr> 1.0
719    <cite class="bibref normative">[<a href="#ref-XML10">XML10</a>]</cite>.</p>
720  </div>  </div>
721    
722    <p>Character class <dfn id=class-CompatChar10><code>CompatChar10</code></dfn>
723    contains the following characters:</p>
724    <ul>
725    <li class=ed>@@ <q>Document authors are encouraged to avoid "compatibility characters", as defined in section 6.8 of [Unicode @@ Unicode 2.0 @@] (see also D21 in section 3.6 of [Unicode3]).</q></li>
726    </ul>
727    
728    <p>Character class <dfn id=class-ControlChar10><code>ControlChar10</code></dfn>
729    contains the following characters:</p>
730    <ul>
731    <li><code class=char>U+007F</code> <code class=charname>DELETE</code> ..
732    <code class=char>U+0084</code> <code class=charname>INDEX</code></li>
733    <li><code class=char>U+0086</code> <code class=charname>START OF SELECTED
734    AREA</code> .. <code class=char>U+009F</code> <code class=charname>APPLICATION
735    PROGRAM COMMAND</code></li>
736    <li><code class=char>U+FDD0</code> .. <code class=char>U+FDEF</code></li>
737    <li><code class=char>U+1FFFE</code> .. <code class=char>U+1FFFF</code></li>
738    <li><code class=char>U+2FFFE</code> .. <code class=char>U+2FFFF</code></li>
739    <li><code class=char>U+3FFFE</code> .. <code class=char>U+3FFFF</code></li>
740    <li><code class=char>U+4FFFE</code> .. <code class=char>U+4FFFF</code></li>
741    <li><code class=char>U+5FFFE</code> .. <code class=char>U+5FFFF</code></li>
742    <li><code class=char>U+6FFFE</code> .. <code class=char>U+6FFFF</code></li>
743    <li><code class=char>U+7FFFE</code> .. <code class=char>U+7FFFF</code></li>
744    <li><code class=char>U+8FFFE</code> .. <code class=char>U+8FFFF</code></li>
745    <li><code class=char>U+9FFFE</code> .. <code class=char>U+9FFFF</code></li>
746    <li><code class=char>U+AFFFE</code> .. <code class=char>U+AFFFF</code></li>
747    <li><code class=char>U+BFFFE</code> .. <code class=char>U+BFFFF</code></li>
748    <li><code class=char>U+CFFFE</code> .. <code class=char>U+CFFFF</code></li>
749    <li><code class=char>U+DFFFE</code> .. <code class=char>U+DFFFF</code></li>
750    <li><code class=char>U+EFFFE</code> .. <code class=char>U+EFFFF</code></li>
751    <li><code class=char>U+FFFFE</code> .. <code class=char>U+FFFFF</code></li>
752    <li><code class=char>U+10FFFE</code> .. <code class=char>U+10FFFF</code></li>
753    </ul>
754    <div class="note memo">
755    <p>This character class contains the characters listed in the Note in
756    <a href="http://www.w3.org/TR/2006/REC-xml-20060816/#charsets">Section 2.2</a>
757    of <abbr>XML</abbr> 1.0
758    <cite class="bibref normative">[<a href="#ref-XML10">XML10</a>]</cite>,
759    as amended by
760    <a href="http://www.w3.org/XML/xml-V10-4e-errata#E02">errata</a>.</p>
761  </div>  </div>
762    
763  </div>  </div>
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