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revision 1.13 by wakaba, Wed Nov 14 12:28:40 2007 UTC revision 1.22 by wakaba, Sun Mar 16 12:33:53 2008 UTC
# Line 18  Line 18 
18    
19  <div class="header">  <div class="header">
20  <h1>manakai's <abbr>XML</abbr> Conformance Checking</h1>  <h1>manakai's <abbr>XML</abbr> Conformance Checking</h1>
21  <h2>Working Draft <time datetime=2007-11-14>14 November 2007</time></h2>  <h2>Working Draft <time datetime=2008-03-16>16 March 2008</time></h2>
22    
23  <dl class="versions-uri">  <dl class="versions-uri">
24  <dt>This Version</dt>  <dt>This Version</dt>
# Line 42  Line 42 
42        >w@suika.fam.cx</a>&gt;</code></dd>        >w@suika.fam.cx</a>&gt;</code></dd>
43  </dl>  </dl>
44    
45  <p class="copyright" lang="en">&#xA9; <time>2007</time> <a  <p class="copyright" lang="en">&#xA9; <time>2007</time>$B!>(B<time>2008</time> <a
46      href="http://suika.fam.cx/~wakaba/who?" rel="author">Wakaba</a>.      href="http://suika.fam.cx/~wakaba/who?" rel="author">Wakaba</a>.
47  Permission is granted to copy, distribute and/or modify this document  Permission is granted to copy, distribute and/or modify this document
48  under the terms of the <a rel="license"  under the terms of the <a rel="license"
# Line 118  else in this specification is normative. Line 118  else in this specification is normative.
118  <p><span class=ed>Algorithm is normative but non-normative</span>.  <p><span class=ed>Algorithm is normative but non-normative</span>.
119  In addition, the order in which <a href="#errors">errors</a> are  In addition, the order in which <a href="#errors">errors</a> are
120  raised is undefined.</p>  raised is undefined.</p>
 </div>  
   
 <div class=section id=parsing-xml>  
 <h2>Parsing <abbr>XML</abbr> Document</h2>  
   
 <ul>  
 <li>If the <abbr>XML</abbr> document does not begin with an  
 <abbr>XML</abbr> declaration, then raise an  
 <a href="#xml-misc-recommentation" id=xmr-xml-decl><code>xml-misc-recommendation</code></a>.</li>  
 <li>If the replacement text of an entity declaration is  
 <code>&lt;</code>, then raise an  
 <a href="#xml-misc-warning" id=xmw-entity-value-lt><code>xml-misc-warning</code></a>.<!--  
 "strongly advised to avoid" in a Note in Section 2.3 of [XML10], [XML11].  
 --></li>  
 <li>If attribute definition whose <code>Name</code> is  
 <code>xml:space</code> has <span class=ed>declared type different from  
 (default|preserve), (default), or (preserve)</span>, then raise an  
 <a href="#xml-misc-error" id=xme-ad-xml-space><code>xml-misc-error</code></a>.  
 <span class=ed>@@ duplication with  
 <a href="#xml-at-xml-space">#xml-at-xml-space</a>.<!--  
 <!ATTLIST e xml:space CDATA #IMPLIED xml:space CDATA #IMPLIED> --></span></li>  
 <!--  
   
 #vc-PEinMarkupDecl Validity constraint: Proper Declaration/PE Nesting  
 #wfc-PEinInternalSubset Well-formedness constraint: PEs in Internal Subset  
 #ExtSubset Well-formedness constraint: External Subset  
 #PE-between-Decls Well-formedness constraint: PE Between Declarations  
121    
122  @@ Need detailed review, but maybe should be in parsing phase  <p>This document sometimes cites parts of <abbr>XML</abbr> 1.0 specification
123    by hyperlinks.  When the document being processed is an <abbr>XML</abbr> 1.1
124  #vc-check-rmd Validity constraint: Standalone Document Declaration  document, however, corresponding parts of the <abbr>XML</abbr> 1.1
125    specification should be consulted instead.</p>
 -->  
 </ul>  
126  </div>  </div>
127    
 <div class="section" id=checking-dom>  
 <h2>Checking <abbr>DOM</abbr></h2>  
   
 <p>The following algorithms and definitions are applied to  
 <abbr>XML</abbr> documents; especially, they are not applied  
 to <abbr>HTML</abbr> documents.<!-- TODO: ref to HTML5 --></p>  
128    
129  <div class=section id=error-categories>  <div class=section id=error-categories>
130  <h3>Error Classification</h3>  <h2>Error Classification</h2>
131    
132  <p class=ed>If a <code>Document</code> node has no  <p class=ed>If a <code>Document</code> node has no
133  xml-well-formedness-error, entity-error, and unknown-error,  xml-well-formedness-error, entity-error, and unknown-error,
# Line 175  into a well$B!>(Bformed XML document. Line 140  into a well$B!>(Bformed XML document.
140  can be easily serialized into a valid XML document.</p>  can be easily serialized into a valid XML document.</p>
141  </div>  </div>
142    
143    <p class=ed>To be a conforming <a href="http://www.w3.org/TR/2006/REC-xml-20060816/#dt-validating">validating XML processor</a>,
144    ...</p>
145    
146  <p>Errors are classified into these  <p>Errors are classified into these
147  <dfn id=error-category title="error category">error categories</dfn>:</p>  <dfn id=error-category title="error category">error categories</dfn>:</p>
148    
# Line 250  can be easily serialized into a valid XM Line 218  can be easily serialized into a valid XM
218    
219  </div>  </div>
220    
221    <div class=section id=parsing-xml>
222    <h2>Parsing <abbr>XML</abbr> Document</h2>
223    
224    <p>When an <abbr>XML</abbr> document is parsed, the following clauses
225    are applied:</p>
226    <dl>
227    <dt>For each document
228      <dd>If the <abbr>XML</abbr> document does not begin with an
229      <abbr>XML</abbr> declaration, then the parser <em class=rfc2119>MUST</em>
230      raise an
231      <a href="#xml-misc-recommentation" id=xmr-xml-decl><code>xml-misc-recommendation</code></a>.
232    <dt>For each internal general entity declaration processed by the parser
233      <dd>If the
234      <a href="http://www.w3.org/TR/2006/REC-xml-20060816/#NT-EntityValue"><code>EntityValue</code></a>
235      part of the general entity declaration contains a bare <code>U+003C</code>
236      <code>LESS-THAN SIGN</code> (<code>&lt;</code>) character, then the parser
237      <em class=rfc2119>MUST</em> raise an
238      <a href="#xml-misc-warning" id=xmw-entity-value-lt><code>xml-misc-warning</code></a>.<!--
239    "strongly advised to avoid" in a Note in Section 2.3 of [XML10], [XML11].
240    -->
241    <dt>For each element type declaration processed by the parser
242      <dd>If there is another element type declaration whose <code>Name</code>
243      is equal to the <code>Name</code> of the element type declaration, then
244      the parser <em class=rfc2119>MUST</em> raise an
245      <a href="#xml-validity-error" id=vc-edunique><code>xml-validity-error</code></a>.
246    <!--
247      NOTE: <!ATTLIST a xml:space (default) #IMPLIED xml:space CDATA #IMPLIED>
248      will not be warned.
249    -->
250    <dt>For each empty-element tag
251      <dd>If the <code>Name</code> of the tag is not declared by a processed
252      element type declaration as <code>EMPTY</code> content, then the parser
253      <em class=rfc2119>MUST</em> raise an
254      <a href="#xml-misc-recommentation" id=xmr-emptyelemtag-not-empty><code>xml-misc-recommendation</code></a>.
255    <dt>For each start-tag
256      <dd>If the <code>Name</code> of the tag is declared by a processed element
257      type declaration as <code>EMPTY</code> content, then the parser
258      <em class=rfc2119>MUST</em> raise an
259      <a href="#xml-misc-recommentation" id=xmr-empty-not-emptyelemtag><code>xml-misc-recommendation</code></a>.
260    <!--
261    
262    #vc-PEinMarkupDecl Validity constraint: Proper Declaration/PE Nesting
263    #wfc-PEinInternalSubset Well-formedness constraint: PEs in Internal Subset
264    #ExtSubset Well-formedness constraint: External Subset
265    #PE-between-Decls Well-formedness constraint: PE Between Declarations
266    #GIMatch Well-formedness constraint: Element Type Match
267    #uniqattspec Well-formedness constraint: Unique Att Spec
268    #NoExternalRefs Well-formedness constraint: No External Entity References
269    #CleanAttrVals Well-formedness constraint: No < in Attribute Values
270    #vc-PEinGroup Validity constraint: Proper Group/PE Nesting
271    "For interoperability, if a parameter-entity reference appears in a choice, seq, or Mixed construct, its replacement text SHOULD contain at least one non-blank character, and neither the first nor last non-blank character of the replacement text SHOULD be a connector (| or ,)."
272    "For interoperability, an XML processor MAY at user option issue a warning when more than one attribute-list declaration is provided for a given element type, or more than one attribute definition is provided for a given attribute, but this is not an error."
273    #condsec-nesting Validity constraint: Proper Conditional Section/PE Nesting
274    #wf-Legalchar Well-formedness constraint: Legal Character
275    #textent Well-formedness constraint: Parsed Entity
276    #norecursion Well-formedness constraint: No Recursion
277    #indtd Well-formedness constraint: In DTD
278    "External parsed entities SHOULD each begin with a text declaration."
279    "It is an error for a reference to an unparsed entity to appear in the EntityValue in an entity declaration."
280    #UniqueNotationName Validity constraint: Unique Notation Name
281    
282    @@ Need detailed review, but maybe should be in parsing phase
283    
284    #vc-check-rmd Validity constraint: Standalone Document Declaration
285    
286    @@ Need dtailed review
287    
288    #wf-entdeclared Well-formedness constraint: Entity Declared
289    #vc-entdeclared Validity constraint: Entity Declared
290    "For interoperability, valid documents SHOULD declare the entities amp, lt, gt, apos, quot, in the form specified in 4.6 Predefined Entities."
291    "If the entities lt or amp are declared, they MUST be declared as internal entities whose replacement text is a character reference to the respective character (less-than sign or ampersand) being escaped; the double escaping is REQUIRED for these entities so that references to them produce a well-formed result. If the entities gt, apos, or quot are declared, they MUST be declared as internal entities whose replacement text is the single character being escaped (or a character reference to that character; the double escaping here is OPTIONAL but harmless)."
292    
293    @@ flaged and then reported in DOM check phase
294    
295    "Entities encoded in UTF-16 MUST and entities encoded in UTF-8 MAY begin with the Byte Order Mark"
296    "In the absence of external character encoding information (such as MIME headers), parsed entities which are stored in an encoding other than UTF-8 or UTF-16 MUST begin with a text declaration"
297    "In an encoding declaration, the values "UTF-8", "UTF-16", "ISO-10646-UCS-2", and "ISO-10646-UCS-4" SHOULD be used for the various encodings and transformations of Unicode / ISO/IEC 10646, the values "ISO-8859-1", "ISO-8859-2", ... "ISO-8859-n" (where n is the part number) SHOULD be used for the parts of ISO 8859, and the values "ISO-2022-JP", "Shift_JIS", and "EUC-JP" SHOULD be used for the various encoded forms of JIS X-0208-1997. It is RECOMMENDED that character encodings registered (as charsets) with the Internet Assigned Numbers Authority [IANA-CHARSETS], other than those just listed, be referred to using their registered names; other encodings SHOULD use names starting with an "x-" prefix."
298    
299    @@ in parsing phase
300    
301    "It is a fatal error when an XML processor encounters an entity with an encoding that it is unable to process. It is a fatal error if an XML entity is determined (via default, encoding declaration, or higher-level protocol) to be in a certain encoding but contains byte sequences that are not legal in that encoding."
302    
303    -->
304    </dl>
305    </div>
306    
307    <div class="section" id=checking-dom>
308    <h2>Checking <abbr>DOM</abbr></h2>
309    
310    <p>The following algorithms and definitions are applied to
311    <abbr>XML</abbr> documents; especially, they are not applied
312    to <abbr>HTML</abbr> documents.<!-- TODO: ref to HTML5 --></p>
313    
314  <div class=section id=definitions>  <div class=section id=definitions>
315  <h3>Definitions</h3>  <h3>Definitions</h3>
316    
# Line 269  is that of the <code>Document</code> nod Line 330  is that of the <code>Document</code> nod
330    
331    
332  <div class=section id=checking-components>  <div class=section id=checking-components>
333  <h3>Checking Components</h3>  <h3>Conformance Checking Algorithms for Components</h3>
334    
335  <p>The algorithm  <p>To
336  <dfn id=algorithm-to-validate-an-xml-character-data title-"to validate an XML character data">to  <dfn id=algorithm-to-validate-an-xml-character-data title="validate an XML string">to
337  validate an <abbr>XML</abbr> character data  validate an <abbr>XML</abbr> string (<dfn id=var-s><var>s</var></dfn>)</dfn>,
338  (<dfn id=var-s><var>s</var></dfn>)</dfn> is defined as following:</p>  the following algorithm <em class=rfc2119>MUST</em> be used:</p>
339  <ol>  <ol>
340  <li>If <var>s</var> contains a character that is <em>not</em> in  <li>If <var>s</var> contains a character that is <em>not</em> in
341  the character class <a href="#class-Char10"><code>Char10</code></a>,  the character class <a href="#class-Char10"><code>Char10</code></a>,
# Line 299  U+000D will be serialized as &#x000D; (s Line 360  U+000D will be serialized as &#x000D; (s
360  will be raised).</span></li>  will be raised).</span></li>
361  </ol>  </ol>
362    
363  <p>The algorithm  <p>To
364  <dfn id=algorithm-to-validate-a-name title="to validate a Name">to validate a  <dfn id=algorithm-to-validate-a-name title="validate a Name">validate a
365  <code>Name</code> (<dfn id=var-name-s><var>s</var></dfn>)</dfn> is defined  <code>Name</code> (<dfn id=var-name-s><var>s</var></dfn>)</dfn>, the following
366  as following:</p>  algorithm <em class=rfc2119>MUST</em> be used:</p>
367  <ol>  <ol>
368    <li>If <var>s</var> is an empty string, then raise an
369    <a href="#xml-well-formedness-error" id=wfe-name-empty><code>xml-well-formedness-error</code></a>.
370    Abort these steps.</li>
371    <li><a href="#algorithm-to-validate-an-xml-character-data" title="validate an XML string">Validate
372    <var>s</var> as an <abbr>XML</abbr> string</a>.</li>
373    <li>If the first character in <var>s</var> is a character that is
374    <em>not</em> in the character class
375    <a href="#class-NameStartChar10"><code>NameStartChar10</code></a>, then raise
376    an
377    <a href="#xml-well-formedness-error" id=wfe-name-startchar><code>xml-well-formedness-error</code></a>.</li>
378    <li>If a character other than the first character in <var>s</var> is a
379    character that is <em>not</em> in the character class
380    <a href="#class-NameChar10"><code>NameChar10</code></a>, then raise an
381    <a href="#xml-well-formedness-error" id=wfe-name-char><code>xml-well-formedness-error</code></a>.</li>
382  <li>If <var>s</var> begins with the string <code>xml</code> (in any  <li>If <var>s</var> begins with the string <code>xml</code> (in any
383  case combination), then raise an  case combination), then raise an
384  <a href="#xml-misc-warning" id=xmw-reserved-name><code>xml-misc-warning</code></a>.  <a href="#xml-misc-warning" id=xmw-reserved-name><code>xml-misc-warning</code></a>.
385  <span class=ed>@@ except for attribute names <code>xml:lang</code>,  <span class=ed>@@ except for attribute names <code>xml:lang</code>,
386  <code>xml:space</code>, <code>xml:base</code>, <code>xml:id</code>,  <code>xml:space</code>, <code>xml:base</code>, <code>xml:id</code>,
387  <code>xmlns</code>, <code>xmlns:<var>*</var></code>,  <code>xmlns</code>, <code>xmlns:<var>*</var></code>,
388  pi name <code>xml-stylesheet</code>.</span></li>  pi name <code>xml-stylesheet</code>.</span><!--
389    "names beginning with a match to (('X'|'x')('M'|'m')('L'|'l')) are reserved for standardization in this or future versions of this specification.":
390    xmlns, xml-stylesheet, xml:base and xml:id specifications violate to this sentense!
391    --></li>
392  <!-- COLON in Name is a lowercase "should not" in a Note of [XML10],  <!-- COLON in Name is a lowercase "should not" in a Note of [XML10],
393  [XML11]. -->  [XML11]. -->
394  <li class=ed>@@</li>  <li class=ed>@@ XML 1.1 support</li>
395  </ol>  </ol>
396    
397  <p>The algorithm  <p>To
398  <dfn id=algorithm-to-validate-a-ncname title="to validate an NCName">to  <dfn id=algorithm-to-validate-an-ncname title="validate an NCName">validate
399  validate an <code>NCName</code> (<dfn id=var-name><var>name</var></dfn>)</dfn>  an <code>NCName</code> (<dfn id=var-ncname-s><var>s</var></dfn>)</dfn>, the
400  is defined as following:</p>  following algorithm <em class=rfc2119>MUST</em> be used:</p>
401  <ol>  <ol>
402    <li><a href="#algorithm-to-validate-a-name" title="validate a Name">Validate
403    <var>s</var> as a <code>Name</code></a>.</li>
404  <li class=ed>@@</li>  <li class=ed>@@</li>
405  </ol>  </ol>
406    
407  <p>To <dfn id=algorithm-to-validate-a-public-identifier title="validate a public identifier">validate  <p>To
408    <dfn id=algorithm-to-validate-a-public-identifier title="validate a public identifier">validate
409  a public identifier (<dfn id=var-pid><var>pid</var></dfn>)</dfn>, the  a public identifier (<dfn id=var-pid><var>pid</var></dfn>)</dfn>, the
410  algorithm below <em class=rfc2119>MUST</em> be used:</p>  following algorithm <em class=rfc2119>MUST</em> be used:</p>
411  <ol>  <ol>
412    <li>If <var>pid</var> contains any character  <li>If <var>pid</var> is <code>null</code>, abort these steps.</li>
413    that is outside of the range of <code>#x20 | #xD | #xA |  <li>If <var>pid</var> contains a character that is <em>not</em> in the
414    [a-zA-Z0-9] | [-'()+,./:=?;!*#@$_%]</code><!-- @@ TODO: formal def -->,  character class <a href="#class-PubidChar"><code>PubidChar</code></a>, then
415    then it is an  raise an
416    <a href="#xml-well-formedness-error" id=wfe-pubid-char><code>xml-well-formedness-error</code></a>.</li>  <a href="#xml-well-formedness-error" id=wfe-pubid-char><code>xml-well-formedness-error</code></a>.</li>
417    <li>If <var>pid</var> contains one of <code class=char>U+0009</code>    <li>If <var>pid</var> contains one of <code class=char>U+0009</code>
418    <code class=charname>CHARACTER TABULATION</code>,    <code class=charname>CHARACTER TABULATION</code>,
419    <code class=char>U+000A</code> <code class=charname>CARRIAGE RETURN</code>,    <code class=char>U+000A</code> <code class=charname>CARRIAGE RETURN</code>,
# Line 344  algorithm below <em class=rfc2119>MUST</ Line 425  algorithm below <em class=rfc2119>MUST</
425    <code class=char>U+0020</code> <code class=charname>SPACE</code> character    <code class=char>U+0020</code> <code class=charname>SPACE</code> character
426    immediately followed by another <code class=char>U+0020</code>    immediately followed by another <code class=char>U+0020</code>
427    <code class=charname>SPACE</code> character in <var>pid</var>, then it is a    <code class=charname>SPACE</code> character in <var>pid</var>, then it is a
428    <a href="#round-trip-error" id=rte-pubid-space><code>round-trip-error</code></a>.</li>    <a href="#round-trip-error" id=rte-pubid-space><code>round-trip-error</code></a>.
429    <li class=ed>@@ Should we check formal-public-identifierness?</li>    <span class=ed>Is this really a roundtripness problem?  XML spec
430      does only define the way to match public identifiers in fact, no
431      canonical form.</span></li>
432    </ol>
433    
434    <p>To
435    <dfn id=algorithm-to-validate-a-system-identifier title="validate a system identifier">validate
436    a system identifier (<dfn id=var-sid><var>sid</var></dfn>)</dfn>, the
437    following algorithm <em class=rfc2119>MUST</em> be used:</p>
438    <ol>
439      <li>If <var>sid</var> is <code>null</code>, abort these steps.</li>
440    <li><a href="#algorithm-to-validate-an-xml-character-data" title="validate an XML string">Validate
441    <var>sid</var> as an <abbr>XML</abbr> string</a>.</li>
442      <li>If <var>sid</var> contains both <code class=char>U+0022</code>
443      <code class=charname>QUOTATION MARK</code> (<code class=char>"</code>) and
444      <code class=char>U+0027</code> <code class=charname>APOSTROPHE</code>
445      (<code class=char>'</code>) characters, raise an
446      <a href="#xml-well-formedness-error" id=wfe-sid-lit><code>xml-well-formedness-error</code></a>.</li>
447      <li>If <var>sid</var> contains at least one <code class=char>U+0023</code>
448      <code class=charname>NUMBER SIGN</code> (<code class=char>#</code>)
449      character, then raise an
450      <a href="#xml-misc-error" id=xme-sid-fragment><code>xml-misc-error</code></a>.</li>
451      <li class=ed>@@ If <var>sid</var> cannot be converted to a URI
452      reference, then raise a fact-level error (xml-misc-warning?).<!--
453      XML 1.0 has no conformance language for system identifier being
454      a URI reference. --></li>
455  </ol>  </ol>
456    
457  </div>  </div>
# Line 360  following:</p> Line 466  following:</p>
466  <dt>If <var>n</var> is an <code>Attr</code> node</dt>  <dt>If <var>n</var> is an <code>Attr</code> node</dt>
467    <dd>    <dd>
468      <ol>      <ol>
469      <li><a href="#algorithm-to-validate-a-ncname">Validate the      <li><a href="#algorithm-to-validate-an-ncname">Validate the
470      <code>localName</code> attribute value as an <code>NCName</code></a>.</li>      <code>localName</code> attribute value as an <code>NCName</code></a>.</li>
471      <li>If the <code>prefix</code> attribute value is different from      <li>If the <code>prefix</code> attribute value is different from
472      <code>null</code>, then <a href="#algorithm-to-validate-a-ncname">validate      <code>null</code>, then <a href="#algorithm-to-validate-an-ncname">validate
473      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>
474      <li>For each node <dfn id=var-attr-nc><var>n<sub><var>c</var></sub></var></dfn> in the      <li>For each node <dfn id=var-attr-nc><var>n<sub><var>c</var></sub></var></dfn> in the
475      <code>childNodes</code> list of <var>n</var>,      <code>childNodes</code> list of <var>n</var>,
# Line 389  following:</p> Line 495  following:</p>
495      successor] or an empty string, then xml-misc-warning      successor] or an empty string, then xml-misc-warning
496      (a "fact"-level error; not an XML error).</li>      (a "fact"-level error; not an XML error).</li>
497      <li class=ed>@@ <code>specified</code>,      <li class=ed>@@ <code>specified</code>,
498      <code>manakaiAttributeType</code></li>      <code>manakaiAttributeType</code> (#ValueType Validity constraint: Attribute Value Type)</li>
499      <!-- xml:space MUST be declared to be valid. -->      <!-- xml:space MUST be declared to be valid. -->
500        <li>Let <dfn id=var-v><var>v</var></dfn> be the value of the
501        attribute <code>value</code> of <var>n</var>.</li>
502        <li>Validate the <var>n</var> against the <span class=ed>declared
503        type</span> as following:
504          <dl class=switch>
505          <dt class=ed><code>ID_ATTR</code></dt>
506            <dd>
507              <ol>
508              <li><span class=ed>Validate <var>v</var> as an
509              <code>Name</code>.</span>  If it fails, then raise an
510              <a href="#xml-validity-error" id=vc-id-name><code>xml-validity-error</code></a>.</li>
511              <li><span class=ed>If <code>ID</code> <var>v</var> is defined,</span>
512              then raise an  
513              <a href="#xml-validity-error" id=vc-id-duplication><code>xml-validity-error</code></a>.</li>
514              </ol>
515            </dd>
516          <dt class=ed>IDREF_ATTR</dt>
517            <dd>
518              <ol>
519              <li><span class=ed>Validate <var>v</var> as an
520              <code>Name</code>.</span>  If it fails, then raise an
521              <a href="#xml-validity-error" id=vc-idref-name><code>xml-validity-error</code></a>.</li>
522              <li><span class=ed>If <code>ID</code> <var>v</var> is NOT
523              defined,</span> then raise an  
524              <a href="#xml-validity-error" id=vc-idref-match><code>xml-validity-error</code></a>.</li>
525              </ol>
526            </dd>
527          <dt class=ed>IDREFS_ATTR</dt>
528            <dd class=ed>@@</dd>
529          <dt class=ed>ENTITY_ATTR</dt>
530            <dd>
531              <ol>
532              <li><span class=ed>Validate <var>v</var> as an
533              <code>Name</code>.</span>  If it fails, then raise an
534              <a href="#xml-validity-error" id=vc-entname-name><code>xml-validity-error</code></a>.</li>
535              <li><span class=ed>If <code>Entity</code> <var>v</var> is NOT
536              defined,</span> then raise an  
537              <a href="#xml-validity-error" id=vc-entname-match><code>xml-validity-error</code></a>.</li>
538              </ol>
539            </dd>
540          <dt class=ed>ENTITIES_ATTR</dt>
541            <dd class=ed>@@</dd>
542          <dt class=ed>NMTOKEN_ATTR</dt>
543            <dd>
544              <ol>
545              <li><span class=ed>Validate <var>v</var> as an
546              <code>Nmtoken</code>.</span>  If it fails, then raise an
547              <a href="#xml-validity-error" id=vc-nmtok-name><code>xml-validity-error</code></a>.</li>
548              </ol>
549            </dd>
550          <dt class=ed>NMTOKENS_ATTR</dt>
551            <dd class=ed>@@</dd>
552          <dt class=ed>NOTATION_ATTR</dt>
553            <dd class=ed><var>v</var> must be one of enumerated values.
554            If not, then raise an
555            <a href="#xml-validity-error" id=vc-notatn-match><code>xml-validity-error</code></a>.</dd>
556          <dt class=ed>ENUMERATED_ATTR</dt>
557            <dd class=ed><var>v</var> must be one of enumerated values.
558            If not, then raise an
559            <a href="#xml-validity-error" id=vc-enum><code>xml-validity-error</code></a>.</dd>
560          <dt class=ed>@@</dt>
561          </dl>
562        </li>
563        <li>If <span class=ed>type ID and default is NOT #IMPLIED or #REQUIRED</span>, then
564        raise an
565        <a href="#xml-validity-error" id=vc-id-default><code>xml-validity-error</code></a>.</li>
566        <li class=ed>@@ #FixedAttr Validity constraint: Fixed Attribute Default</li>
567        <li class=ed>@@ strict serialization error for U+000D, U+000A, and
568        U+0009 characters, leading/trailing U+0020, and U+0020{2,} string?</li>
569      </ol>      </ol>
570    </dd>    </dd>
571  <dt>If <var>n</var> is an <code>AttributeDefinition</code> node</dt>  <dt>If <var>n</var> is an <code>AttributeDefinition</code> node</dt>
# Line 400  following:</p> Line 575  following:</p>
575      <li>If <code>nodeName</code> attribute of <var>n</var> is      <li>If <code>nodeName</code> attribute of <var>n</var> is
576      <code>xml:space</code> <span class=ed>@@ or {xml namespace}:space ?</span>      <code>xml:space</code> <span class=ed>@@ or {xml namespace}:space ?</span>
577      and <span class=ed>its declared type is different from (default|preserve),      and <span class=ed>its declared type is different from (default|preserve),
578      (default), or (preserve)</span>, then raise an      (preserve|default), (default), or (preserve)</span>, then raise an
579      <a href="#xml-misc-error" id=xme-at-xml-space><code>xml-misc-error</code></a>.</li>      <a href="#xml-misc-error" id=xme-at-xml-space><code>xml-misc-error</code></a>.</li>
580      <li>For each node <dfn id=var-ad-nc><var>n<sub><var>c</var></sub></var></dfn> in the      <li>For each node <dfn id=var-ad-nc><var>n<sub><var>c</var></sub></var></dfn> in the
581      <code>childNodes</code> list of <var>n</var>,      <code>childNodes</code> list of <var>n</var>,
# Line 415  following:</p> Line 590  following:</p>
590        <a href="#algorithm-to-check-a-node" title="check a node">check        <a href="#algorithm-to-check-a-node" title="check a node">check
591        <var>n<sub><var>c</var></sub></var></a> recusrively.</li>        <var>n<sub><var>c</var></sub></var></a> recusrively.</li>
592        </ol></li>        </ol></li>
593        <li class=ed>If <code>NOTATION_ATTR</code>, enumerated values MUST
594        be declared.  If not, then raise an
595        <a href="#xml-validity-error" id=vc-notatn-declared><code>xml-validity-error</code></a>.</li>
596        <li class=ed>If <code>NOTATION_ATTR</code> or <code>ENUMERATED_ATTR</code>,
597        values MUST all be distinct.  If not, then raise an
598        <a href="#xml-validity-error" id=vc-no-duplicate-tokens><code>xml-validity-error</code></a>.</li>
599        <li class=ed>If <code>NOTATION_ATTR</code> on an <code>EMPTY</code>
600        element, then raise an
601        <a href="#xml-validity-error" id=vc-no-notation-empty><code>xml-validity-error</code></a>.</li>
602        <li class=ed>@@ #defattrvalid Validity constraint: Attribute Default Value Syntactically Correct</li>
603      </ol>      </ol>
604    </dd>    </dd>
605  <dt>If <var>n</var> is a <code>CDATASection</code> node</dt>  <dt>If <var>n</var> is a <code>CDATASection</code> node</dt>
606    <dd>    <dd>
607      <ol>      <ol>
608      <li><a href="#algorithm-to-validate-an-xml-character-data">Validate the      <li><a href="#algorithm-to-validate-an-xml-character-data" title="validate an XML string">Validate the
609      <code>data</code> attribute value as an <abbr>XML</abbr> character      <code>data</code> attribute value as an <abbr>XML</abbr> character
610      data</a>.</li>      data</a>.</li>
611      <li>If the <code>data</code> attribute value contains      <li>If the <code>data</code> attribute value contains
# Line 436  following:</p> Line 621  following:</p>
621      <ol>      <ol>
622      <li>Raise an      <li>Raise an
623      <a href="#round-trip-warning" id=rtw-comment><code>round-trip-warning</code></a>.</li>      <a href="#round-trip-warning" id=rtw-comment><code>round-trip-warning</code></a>.</li>
624      <li><a href="#algorithm-to-validate-an-xml-character-data">Validate the      <li><a href="#algorithm-to-validate-an-xml-character-data" title="validate an XML string">Validate the
625      <code>data</code> attribute value as an <abbr>XML</abbr> character      <code>data</code> attribute value as an <abbr>XML</abbr> character
626      data</a>.</li>      data</a>.</li>
627      <li>If the <code>data</code> attribute value contains      <li>If the <code>data</code> attribute value contains
# Line 503  following:</p> Line 688  following:</p>
688  <dt>If <var>n</var> is a <code>DocumentType</code> node</dt>  <dt>If <var>n</var> is a <code>DocumentType</code> node</dt>
689    <dd>    <dd>
690      <ol>      <ol>
691      <li><a href="#algorithm-to-validate-a-ncname">Validate the      <li><a href="#algorithm-to-validate-an-ncname">Validate the
692      <code>nodeName</code> attribute value as an <code>NCName</code></a>.</li>      <code>nodeName</code> attribute value as an <code>NCName</code></a>.</li>
693      <li>Follow the following substeps:      <li>Follow the following substeps:
694        <ol>        <ol>
# Line 522  following:</p> Line 707  following:</p>
707      </li>      </li>
708      <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
709      the <code>publicId</code> attribute value as a public identifier</a>.</li>      the <code>publicId</code> attribute value as a public identifier</a>.</li>
710      <li>If the <code>systemId</code> attribute value contains      <li><a href="#algorithm-to-validate-a-system-identifier" title="validate a system identifier">Validate
711      both <code>"</code> and <code>'</code> characters, it is a      the <code>systemId</code> attribute value as a system identifier</a>.</li>
712      <a href="#xml-well-formedness-error" id=wfe-dt-system-id><code>xml-well-formedness-error</code></a>.</li>      <li>If the <code>publicId</code> attribute value of <var>n</var> is
713      <!-- publicId = non-null and systemId = null -->      <em>not</em> <code>null</code> and the <code>systemId</code> attribute
714        value of <var>n</var> is <code>null</code>, then raise an
715        <a href="#xml-well-formedness-error" id=wfe-dt-sid><code>xml-well-formedness-error</code></a>.
716        <span class=ed>@@ publicId == null?  Or, publicId == ""</span></li>
717      <li>For each node <dfn id=var-dt-nc><var>n<sub><var>c</var></sub></var></dfn>      <li>For each node <dfn id=var-dt-nc><var>n<sub><var>c</var></sub></var></dfn>
718      in the <code>childNodes</code> list of <var>n</var>,      in the <code>childNodes</code> list of <var>n</var>,
719        <ol>        <ol>
# Line 537  following:</p> Line 725  following:</p>
725        <a href="#algorithm-to-check-a-node" title="check a node">check        <a href="#algorithm-to-check-a-node" title="check a node">check
726        <var>n<sub><var>c</var></sub></var></a> recusrively.</li>        <var>n<sub><var>c</var></sub></var></a> recusrively.</li>
727        </ol></li>        </ol></li>
728      <li class=ed>@@ <code>entities</code>, <code>notations</code>,      <li>For each node in the <code>entities</code>, <code>notations</code>,
729      <code>elementTypes</code>, externally declared?</li>      and <code>elementTypes</code> lists of <var>n</var>,
730        <a href="#algorithm-to-check-a-node" title="check a node">check the
731        node</a> recursively.</li>
732        <li class=ed>@@ externally declared?</li>
733      </ol>      </ol>
734    </dd>    </dd>
735  <dt>If <var>n</var> is an <code>Element</code> node</dt>  <dt>If <var>n</var> is an <code>Element</code> node</dt>
736    <dd>    <dd>
737      <ol>      <ol>
738      <li><a href="#algorithm-to-validate-a-ncname">Validate the      <li><a href="#algorithm-to-validate-an-ncname">Validate the
739      <code>localName</code> attribute value as an <code>NCName</code></a>.</li>      <code>localName</code> attribute value as an <code>NCName</code></a>.</li>
740      <li>If the <code>prefix</code> attribute value is different from      <li>If the <code>prefix</code> attribute value is different from
741      <code>null</code>, then <a href="#algorithm-to-validate-a-ncname">validate      <code>null</code>, then <a href="#algorithm-to-validate-an-ncname">validate
742      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>
743      <li>For each node <dfn id=var-element-nc><var>n<sub><var>c</var></sub></var></dfn>      <li>For each node <dfn id=var-element-nc><var>n<sub><var>c</var></sub></var></dfn>
744      in the <code>childNodes</code> list of <var>n</var>,      in the <code>childNodes</code> list of <var>n</var>,
# Line 565  following:</p> Line 756  following:</p>
756        <a href="#algorithm-to-check-a-node" title="check a node">check        <a href="#algorithm-to-check-a-node" title="check a node">check
757        <var>n<sub><var>c</var></sub></var></a> recursively.</li>        <var>n<sub><var>c</var></sub></var></a> recursively.</li>
758        </ol></li>        </ol></li>
759        <li class=ed>@@ #elementvalid Validity constraint: Element Valid</li>
760        <li>Let <var>attrs</var> be the value of the <code>attribute</code>
761        attribute of <var>n</var>.  Check conformance of <var>attrs</var>
762        as following:
763          <ol>
764          <li>If <var>attrs</var> contains an <code>Attr</code> node whose
765          <code>nodeName</code> attribute value is equal to that of another
766          <code>Attr</code> node in <var>attrs</var>, then raise an
767          <a href="#xml-well-formedness-error" id=wfe-uniqattspec><code>xml-well-formedness-error</code></a>.<!--
768          #uniqattspec Well-formedness constraint: Unique Att Spec --></li>
769          <li class=ed>@@ #RequiredAttr Validity constraint: Required Attribute</li>
770          </ol>
771        </li>
772      </ol>      </ol>
773    </dd>    </dd>
774  <dt>If <var>n</var> is an <code>ElementTypeDefinition</code> node</dt>  <dt>If <var>n</var> is an <code>ElementTypeDefinition</code> node</dt>
# Line 574  following:</p> Line 778  following:</p>
778      <li>If the <code>childNodes</code> list of <var>n</var> contains      <li>If the <code>childNodes</code> list of <var>n</var> contains
779      any nodes, they are in      any nodes, they are in
780      <a href="#xml-well-formedness-error" id=wfe-et-child><code>xml-well-formedness-error</code></a>.</li>      <a href="#xml-well-formedness-error" id=wfe-et-child><code>xml-well-formedness-error</code></a>.</li>
781        <li class=ed>@@ <q cite="http://www.w3.org/TR/2006/REC-xml-20060816/#elemdecls">At user option, an XML processor MAY issue a warning when a declaration mentions an element type for which no declaration is provided, but this is not an error.</q></li>
782        <li class=ed>@@ <q cite="http://www.w3.org/TR/2006/REC-xml-20060816/#sec-element-content">For compatibility, it is an error if the content model allows an element to match more than one occurrence of an element type in the content model. </q></li>
783        <li class=ed>@@ #vc-MixedChildrenUnique
784        Validity constraint: No Duplicate Types</li>
785        <li class=ed>@@ <q cite="http://www.w3.org/TR/2006/REC-xml-20060816/#attdecls">At user option, an XML processor MAY issue a warning if attributes are declared for an element type not itself declared, but this is not an error.</q></li>
786        <li>If there is more than one <code>AttributeDefinition</code> node
787        with <span class=ed>attribute type <code>ID</code></span> in the
788        <code>NamedNodeMap</code> list contained in the
789        <code>attributeDefinitions</code> attribute of <var>n</var>, then raise an
790        <a href="#xml-validity-error" id=vc-one-id-per-el><code>xml-validity-error</code></a>.</li>
791        <li>If there is more than one <code>AttributeDefinition</code> node
792        with <span class=ed>attribute type <code>NOTATION</code></span> in the
793        <code>NamedNodeMap</code> list contained in the
794        <code>attributeDefinitions</code> attribute of <var>n</var>, then raise an
795        <a href="#xml-validity-error" id=vc-one-notation-per><code>xml-validity-error</code></a>.</li>
796        <li class=ed>"For interoperability, the same Nmtoken  SHOULD NOT occur more than once in the enumerated attribute types of a single element type."</li>
797      </ol>      </ol>
798    </dd>    </dd>
799  <dt>If <var>n</var> is an <code>Entity</code> node</dt>  <dt>If <var>n</var> is an <code>Entity</code> node whose
800    <code>notationName</code> attribute value is <code>null</code> (i.e. a
801    parsed entity)</dt>
802    <dd>    <dd>
803      <ol>      <ol>
804      <li>An <a href="#entity-error" id=ee-entity-node><code>entity-error</code></a> <span class=ed>@@ if !notationName</span>.</li>      <li>Raise an
805      <li><a href="#algorithm-to-validate-a-ncname">Validate the      <a href="#entity-error" id=ee-entity-node><code>entity-error</code></a>.</li>
806        <li><a href="#algorithm-to-validate-an-ncname">Validate the
807      <code>nodeName</code> attribute value as an <code>NCName</code></a>.</li>      <code>nodeName</code> attribute value as an <code>NCName</code></a>.</li>
808      <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
809      the <code>publicId</code> attribute value as a public identifier</a>.</li>      the <code>publicId</code> attribute value as a public identifier</a>.</li>
810      <li>If the <code>systemId</code> attribute value contains      <li><a href="#algorithm-to-validate-a-system-identifier" title="validate a system identifier">Validate
811      both <code>"</code> and <code>'</code> characters, it is a      the <code>systemId</code> attribute value as a system identifier</a>.</li>
812      <a href="#xml-well-formedness-error" id=wfe-dt-system-id><code>xml-well-formedness-error</code></a>.</li>      <li>If the <code>publicId</code> attribute value of <var>n</var> is
813      <!-- publicId = non-null and systemId = null -->      <em>not</em> <code>null</code> and the <code>systemId</code> attribute
814      <li class=ed>@@ <code>notationName</code></li>      value of <var>n</var> is <code>null</code>, then raise an
815        <a href="#xml-well-formedness-error" id=wfe-entity-sid><code>xml-well-formedness-error</code></a>.</li>
816      <li>For each node <dfn id=var-entity-nc><var>n<sub><var>c</var></sub></var></dfn>      <li>For each node <dfn id=var-entity-nc><var>n<sub><var>c</var></sub></var></dfn>
817      in the <code>childNodes</code> list of <var>n</var>,      in the <code>childNodes</code> list of <var>n</var>,
818        <ol>        <ol>
# Line 607  following:</p> Line 831  following:</p>
831        </ol></li>        </ol></li>
832      </ol>      </ol>
833    </dd>    </dd>
834    <dt>If <var>n</var> is an <code>Entity</code> node whose
835    <code>notationName</code> attribute value is <em>not</em> <code>null</code>
836    (i.e. an unparsed entity)</dt>
837      <dd>
838        <ol>
839        <li><a href="#algorithm-to-validate-an-ncname">Validate the
840        <code>nodeName</code> attribute value as an <code>NCName</code></a>.</li>
841        <li><a href="#algorithm-to-validate-a-public-identifier" title="validate a public identifier">Validate
842        the <code>publicId</code> attribute value as a public identifier</a>.</li>
843        <li><a href="#algorithm-to-validate-a-system-identifier" title="validate a system identifier">Validate
844        the <code>systemId</code> attribute value as a system identifier</a>.</li>
845        <li>If the <code>systemId</code> attribute value of <var>n</var> is
846        <code>null</code>, then raise an
847        <a href="#xml-well-formedness-error" id=wfe-uentity-sid><code>xml-well-formedness-error</code></a>.</li>
848        <li><a href="#algorithm-to-validate-an-ncname">Validate the
849        <code>notationName</code> attribute value of <var>n</var> as an
850        <code>NCName</code></a>.</li>
851        <li class=ed>@@ #not-declared Validity constraint: Notation Declared</li>
852        <li>If the <code>childNodes</code> list of <var>n</var> contains
853        any nodes, they are in
854        <a href="#xml-well-formedness-error" id=wfe-uentity-child><code>xml-well-formedness-error</code></a>.</li>
855        </ol>
856      </dd>
857  <dt>If <var>n</var> is an <code>EntityReference</code> node</dt>  <dt>If <var>n</var> is an <code>EntityReference</code> node</dt>
858    <dd>    <dd>
859      <ol>      <ol>
860      <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>
861      <li><a href="#algorithm-to-validate-a-ncname">Validate the      <li><a href="#algorithm-to-validate-an-ncname">Validate the
862      <code>nodeName</code> attribute value as an <code>NCName</code></a>.</li>      <code>nodeName</code> attribute value as an <code>NCName</code></a>.</li>
863      <li>For each node <dfn id=var-er-nc><var>n<sub><var>c</var></sub></var></dfn>      <li>For each node <dfn id=var-er-nc><var>n<sub><var>c</var></sub></var></dfn>
864      in the <code>childNodes</code> list of <var>n</var>,      in the <code>childNodes</code> list of <var>n</var>,
# Line 634  following:</p> Line 881  following:</p>
881  <dt>If <var>n</var> is a <code>Notation</code> node</dt>  <dt>If <var>n</var> is a <code>Notation</code> node</dt>
882    <dd>    <dd>
883      <ol>      <ol>
884      <li><a href="#algorithm-to-validate-a-ncname">Validate the      <li><a href="#algorithm-to-validate-an-ncname">Validate the
885      <code>nodeName</code> attribute value as an <code>NCName</code></a>.</li>      <code>nodeName</code> attribute value as an <code>NCName</code></a>.</li>
886      <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
887      the <code>publicId</code> attribute value as a public identifier</a>.</li>      the <code>publicId</code> attribute value as a public identifier</a>.</li>
888      <li>If the <code>systemId</code> attribute value contains      <li><a href="#algorithm-to-validate-a-system-identifier" title="validate a system identifier">Validate
889      both <code>"</code> and <code>'</code> characters, it is a      the <code>systemId</code> attribute value as a system identifier</a>.</li>
     <a href="#xml-well-formedness-error" id=wfe-dt-system-id><code>xml-well-formedness-error</code></a>.</li>  
890      <li>If the <code>childNodes</code> list of <var>n</var> contains      <li>If the <code>childNodes</code> list of <var>n</var> contains
891      any nodes, they are in      any nodes, they are in
892      <a href="#xml-well-formedness-error" id=wfe-notation-child><code>xml-well-formedness-error</code></a>.</li>      <a href="#xml-well-formedness-error" id=wfe-notation-child><code>xml-well-formedness-error</code></a>.</li>
# Line 652  following:</p> Line 898  following:</p>
898      <li>If the <code>target</code> attribute value matches to the string      <li>If the <code>target</code> attribute value matches to the string
899      <code>xml</code> in any case combination, then raise a      <code>xml</code> in any case combination, then raise a
900      <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>
901      <li>Otherwise, <a href="#algorithm-to-validate-a-ncname">validate the      <li>Otherwise, <a href="#algorithm-to-validate-an-ncname">validate the
902      <code>target</code> attribute value as an <code>NCName</code></a>.</li>      <code>target</code> attribute value as an <code>NCName</code></a>.</li>
903      <li>Then,      <li>Then,
904      <a href="#algorithm-to-validate-an-xml-character-data" title="validate an XML character data">validate      <a href="#algorithm-to-validate-an-xml-character-data" title="validate an XML string">validate
905      the <code>data</code> attribute value as an <abbr>XML</abbr> character      the <code>data</code> attribute value as an <abbr>XML</abbr> character
906      data</a>.</li>      data</a>.</li>
907      <li>If the <code>data</code> attribute value contains a string      <li>If the <code>data</code> attribute value contains a string
# Line 676  following:</p> Line 922  following:</p>
922  <dt>If <var>n</var> is a <code>Text</code> node</dt>  <dt>If <var>n</var> is a <code>Text</code> node</dt>
923    <dd>    <dd>
924      <ol>      <ol>
925      <li><a href="#algorithm-to-validate-an-xml-character-data">Validate the      <li><a href="#algorithm-to-validate-an-xml-character-data" title="validate an XML string">Validate the
926      <code>data</code> attribute value as an <abbr>XML</abbr> character      <code>data</code> attribute value as an <abbr>XML</abbr> character
927      data</a>.</li>      data</a>.</li>
928      <li>If the <code>childNodes</code> list of <var>n</var> contains      <li>If the <code>childNodes</code> list of <var>n</var> contains
# Line 760  as amended by Line 1006  as amended by
1006  <a href="http://www.w3.org/XML/xml-V10-4e-errata#E02">errata</a>.</p>  <a href="http://www.w3.org/XML/xml-V10-4e-errata#E02">errata</a>.</p>
1007  </div>  </div>
1008    
1009    <p>The character class <dfn id=class-NameStartChar10><code>NameStartChar10</code></dfn>
1010    contains the following characters:</p>
1011    <ul class=ed>
1012    </ul>
1013    <div class="note memo">
1014    <p>This character class contains all characters allowed as the first character
1015    of a string matching to the production rule
1016    <a href="http://www.w3.org/TR/2006/REC-xml-20060816/#NT-Name"><code>Name</code></a>
1017    of <abbr>XML</abbr> 1.0
1018    <cite class="bibref normative">[<a href="#ref-XML10">XML10</a>]</cite>.</p>
1019    </div>
1020    
1021    <p>The character class <dfn id=class-NameChar10><code>NameChar10</code></dfn>
1022    contains the following characters:</p>
1023    <ul>
1024    <li>The characters in the character class
1025    <a href="#class-NameStartChar10">NameStartChar10</a>.</li>
1026    <li class=ed></li>
1027    </ul>
1028    <div class="note memo">
1029    <p>This character class contains all characters allowed as the second
1030    character of a string matching to the production rule
1031    <a href="http://www.w3.org/TR/2006/REC-xml-20060816/#NT-Name"><code>Name</code></a>
1032    of <abbr>XML</abbr> 1.0
1033    <cite class="bibref normative">[<a href="#ref-XML10">XML10</a>]</cite>.</p>
1034    </div>
1035    
1036    <p>The character class <dfn id=class-PubidChar><code>PubidChar</code></dfn>
1037    contains the following characters:</p>
1038    <ul>
1039    <li><code class=char>U+0009</code> <code class=charname>CHARACTER
1040    TABULATION</code></li>
1041    <li><code class=char>U+000A</code> <code class=charname>LINE FEED</code></li>
1042    <li><code class=char>U+000D</code> <code class=charname>CARRIAGE
1043    RETURN</code></li>
1044    <li><code class=char>U+0020</code> <code class=charname>SPACE</code></li>
1045    <li><code class=char>U+0021</code> <code class=charname>EXCLAMATION MARK</code>
1046    (<code class=char>!</code>)</li>
1047    <li><code class=char>U+0023</code> <code class=charname>DOLLAR SIGN</code>
1048    (<code class=char>$</code>)</li>
1049    <li><code class=char>U+0024</code> <code class=charname>NUMBER SIGN</code>
1050    (<code class=char>#</code>)</li>
1051    <li><code class=char>U+0025</code> <code class=charname>PERCENT SIGN</code>
1052    (<code class=char>%</code>)</li>
1053    <li><code class=char>U+0027</code> <code class=charname>APOSTROPHE</code>
1054    (<code class=char>'</code>)</li>
1055    <li><code class=char>U+0028</code> <code class=charname>LEFT PARENTHESIS</code>
1056    (<code class=char>(</code>)</li>
1057    <li><code class=char>U+0029</code> <code class=charname>RIGHT
1058    PARENTHESIS</code> (<code class=char>)</code>)</li>
1059    <li><code class=char>U+002A</code> <code class=charname>ASTERISK</code>
1060    (<code class=char>*</code>)</li>
1061    <li><code class=char>U+002B</code> <code class=charname>PLUS SIGN</code>
1062    (<code class=char>+</code>)</li>
1063    <li><code class=char>U+002C</code> <code class=charname>COMMA</code>
1064    (<code class=char>,</code>)</li>
1065    <li><code class=char>U+002D</code> <code class=charname>HYPHEN-MINUS</code>
1066    (<code class=char>-</code>)</li>
1067    <li><code class=char>U+002E</code> <code class=charname>FULL STOP</code>
1068    (<code class=char>.</code>)</li>
1069    <li><code class=char>U+002F</code> <code class=charname>SOLIDUS</code>
1070    (<code class=char>/</code>)</li>
1071    <li><code class=char>U+0030</code> <code class=charname>DIGIT ZERO</code>
1072    (<code class=char>0</code>) .. <code class=char>U+0039</code>
1073    <code class=charname>DIGIT NINE</code> (<code class=char>9</code>)</li>
1074    <li><code class=char>U+003A</code> <code class=charname>COLON</code>
1075    (<code class=char>:</code>)</li>
1076    <li><code class=char>U+003B</code> <code class=charname>SEMICOLON</code>
1077    (<code class=char>;</code>)</li>
1078    <li><code class=char>U+003D</code> <code class=charname>EQUAL SIGN</code>
1079    (<code class=char>=</code>)</li>
1080    <li><code class=char>U+003F</code> <code class=charname>QUESTION MARK</code>
1081    (<code class=char>?</code>)</li>
1082    <li><code class=char>U+0040</code> <code class=charname>COMMERCIAL AT</code>
1083    (<code class=char>@</code>)</li>
1084    <li><code class=char>U+0041</code> <code class=charname>LATIN CAPITAL LETTER
1085    A</code> (<code class=char>A</code>) .. <code class=char>U+005A</code>
1086    <code class=charname>LATIN CAPITAL LETTER Z</code>
1087    (<code class=char>Z</code>)</li>
1088    <li><code class=char>U+005F</code> <code class=charname>LOW LINE</code>
1089    (<code class=char>_</code>)</li>
1090    <li><code class=char>U+0061</code> <code class=charname>LATIN CAPITAL LETTER
1091    A</code> (<code class=char>A</code>) .. <code class=char>U+007A</code>
1092    <code class=charname>LATIN CAPITAL LETTER Z</code>
1093    (<code class=char>Z</code>)</li>
1094    </ul>
1095    <div class="note memo">
1096    <p>This character class contains all characters allowed in the production rule
1097    <a href="http://www.w3.org/TR/2006/REC-xml-20060816/#NT-PubidChar"><code>PubidChar</code></a>
1098    of <abbr>XML</abbr> 1.0
1099    <cite class="bibref normative">[<a href="#ref-XML10">XML10</a>]</cite>.</p>
1100    </div>
1101    
1102  </div>  </div>
1103    
1104  <div id="references" class="section reference">  <div id="references" class="section reference">

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