<?xml version="1.0" encoding="UTF-8"?>
<doctype>
  <comment> ............................................................... </comment>
  <comment> XML specification DTD ......................................... </comment>
  <comment> ............................................................... </comment>
  <comment>
TYPICAL INVOCATION:
#  &lt;!DOCTYPE spec PUBLIC
#       &quot;-//W3C//DTD Specification V2.1//EN&quot;
#       &quot;http://www.w3.org/XML/1998/06/xmlspec-v21.dtd&quot;&gt;

PURPOSE:
  This XML DTD is for W3C specifications and other technical reports.
  It is based in part on the TEI Lite and Sweb DTDs.

DEPENDENCIES:
  None.

CHANGE HISTORY:
  The list of changes is at the end of the DTD.

  For all details, see the design report at:

#   &lt;http://www.w3.org/XML/1998/06/xmlspec-report-v21.htm&gt;

  Search this file for &quot;#&quot; in the first column to see change history
  comments.  To find changes made this time, search for &quot;2000-03-07&quot;.

MAINTAINER:
  Eve Maler
  Sun Microsystems, Inc.
  elm@east.sun.com
  voice: +1 781 442 3190
  fax:   +1 781 442 1437
</comment>
  <comment> ............................................................... </comment>
  <comment> Entities for characters and symbols ........................... </comment>
  <comment> ............................................................... </comment>
  <comment>
#1998-03-10: maler: Added &amp;ldquo; and &amp;rdquo;.
#                   Used 8879:1986-compatible decimal character
#                   references.
#                   Merged charent.mod file back into main file.
#1998-05-14: maler: Fixed ldquo and rdquo.  Gave mdash a real number.
#1998-12-03: maler: Escaped the leading ampersands.
</comment>
  <internalEntity name="lt">&amp;#60;</internalEntity>
  <internalEntity name="gt">&gt;</internalEntity>
  <internalEntity name="amp">&amp;#38;</internalEntity>
  <internalEntity name="apos">'</internalEntity>
  <internalEntity name="quot">&quot;</internalEntity>
  <internalEntity name="nbsp">&#x00A0;</internalEntity>
  <internalEntity name="mdash">&amp;#x2014;</internalEntity>
  <internalEntity name="ldquo">&amp;#x201C;</internalEntity>
  <internalEntity name="rdquo">&amp;#x201D;</internalEntity>
  <comment> ............................................................... </comment>
  <comment> Entities for classes of standalone elements ................... </comment>
  <comment> ............................................................... </comment>
  <comment>
#1997-10-16: maler: Added table to %illus.class;.
#1997-11-28: maler: Added htable to %illus.class;.
#1997-12-29: maler: IGNOREd table.
#1998-03-10: maler: Removed SGML Open-specific %illus.class;.
#                   Added &quot;local&quot; entities for customization.
#1998-05-14: maler: Added issue to %note.class;.
#                   Removed %[local.]statusp.class;.
#1998-05-21: maler: Added constraintnote to %note.class;.
#1998-08-22: maler: Changed htable to table in %illus.class;.
#                   Added definitions to %illus.class;.
#2000-03-07: maler: Added proto and example to %illus.class;.
</comment>
  <modelGroup name="local.p.class">
    <choice/>
  </modelGroup>
  <modelGroup name="p.class">
    <choice>
      <elementRef>
        <name>p</name>
      </elementRef>
      <modelGroupRef name="local.p.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="local.list.class">
    <choice/>
  </modelGroup>
  <modelGroup name="list.class">
    <choice>
      <elementRef>
        <name>ulist</name>
      </elementRef>
      <elementRef>
        <name>olist</name>
      </elementRef>
      <elementRef>
        <name>slist</name>
      </elementRef>
      <elementRef>
        <name>glist</name>
      </elementRef>
      <modelGroupRef name="local.list.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="local.speclist.class">
    <choice/>
  </modelGroup>
  <modelGroup name="speclist.class">
    <choice>
      <elementRef>
        <name>orglist</name>
      </elementRef>
      <elementRef>
        <name>blist</name>
      </elementRef>
      <modelGroupRef name="local.speclist.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="local.note.class">
    <choice/>
  </modelGroup>
  <modelGroup name="note.class">
    <choice>
      <elementRef>
        <name>note</name>
      </elementRef>
      <elementRef>
        <name>issue</name>
      </elementRef>
      <elementRef>
        <name>wfcnote</name>
      </elementRef>
      <elementRef>
        <name>vcnote</name>
      </elementRef>
      <elementRef>
        <name>constraintnote</name>
      </elementRef>
      <modelGroupRef name="local.note.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="local.illus.class">
    <choice/>
  </modelGroup>
  <modelGroup name="illus.class">
    <choice>
      <elementRef>
        <name>eg</name>
      </elementRef>
      <elementRef>
        <name>graphic</name>
      </elementRef>
      <elementRef>
        <name>scrap</name>
      </elementRef>
      <elementRef>
        <name>table</name>
      </elementRef>
      <elementRef>
        <name>definitions</name>
      </elementRef>
      <elementRef>
        <name>proto</name>
      </elementRef>
      <elementRef>
        <name>example</name>
      </elementRef>
      <modelGroupRef name="local.illus.class"/>
    </choice>
  </modelGroup>
  <comment> ............................................................... </comment>
  <comment> Entities for classes of phrase-level elements ................. </comment>
  <comment> ............................................................... </comment>
  <comment>
#1997-12-29: maler: Added xspecref to %ref.class;.
#1998-03-10: maler: Added %ednote.class;.
#                   Added &quot;local&quot; entities for customization.
#2000-03-07: maler: Added function, var, el, att, and attval to
#                   %tech.class;.
#                   Added sub, sup, and phrase to %emph.class;.
</comment>
  <modelGroup name="local.annot.class">
    <choice/>
  </modelGroup>
  <modelGroup name="annot.class">
    <choice>
      <elementRef>
        <name>footnote</name>
      </elementRef>
      <modelGroupRef name="local.annot.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="local.termdef.class">
    <choice/>
  </modelGroup>
  <modelGroup name="termdef.class">
    <choice>
      <elementRef>
        <name>termdef</name>
      </elementRef>
      <elementRef>
        <name>term</name>
      </elementRef>
      <modelGroupRef name="local.termdef.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="local.emph.class">
    <choice/>
  </modelGroup>
  <modelGroup name="emph.class">
    <choice>
      <elementRef>
        <name>emph</name>
      </elementRef>
      <elementRef>
        <name>phrase</name>
      </elementRef>
      <elementRef>
        <name>quote</name>
      </elementRef>
      <elementRef>
        <name>sub</name>
      </elementRef>
      <elementRef>
        <name>sup</name>
      </elementRef>
      <modelGroupRef name="local.emph.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="local.ref.class">
    <choice/>
  </modelGroup>
  <modelGroup name="ref.class">
    <choice>
      <elementRef>
        <name>bibref</name>
      </elementRef>
      <elementRef>
        <name>specref</name>
      </elementRef>
      <elementRef>
        <name>termref</name>
      </elementRef>
      <elementRef>
        <name>titleref</name>
      </elementRef>
      <elementRef>
        <name>xspecref</name>
      </elementRef>
      <elementRef>
        <name>xtermref</name>
      </elementRef>
      <modelGroupRef name="local.ref.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="local.loc.class">
    <choice/>
  </modelGroup>
  <modelGroup name="loc.class">
    <choice>
      <elementRef>
        <name>loc</name>
      </elementRef>
      <modelGroupRef name="local.loc.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="local.tech.class">
    <choice/>
  </modelGroup>
  <modelGroup name="tech.class">
    <choice>
      <elementRef>
        <name>kw</name>
      </elementRef>
      <elementRef>
        <name>nt</name>
      </elementRef>
      <elementRef>
        <name>xnt</name>
      </elementRef>
      <elementRef>
        <name>code</name>
      </elementRef>
      <elementRef>
        <name>function</name>
      </elementRef>
      <elementRef>
        <name>var</name>
      </elementRef>
      <elementRef>
        <name>el</name>
      </elementRef>
      <elementRef>
        <name>att</name>
      </elementRef>
      <elementRef>
        <name>attval</name>
      </elementRef>
      <modelGroupRef name="local.tech.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="local.ednote.class">
    <choice/>
  </modelGroup>
  <modelGroup name="ednote.class">
    <choice>
      <elementRef>
        <name>ednote</name>
      </elementRef>
      <modelGroupRef name="local.ednote.class"/>
    </choice>
  </modelGroup>
  <comment> ............................................................... </comment>
  <comment> Entities for mixtures of standalone elements .................. </comment>
  <comment> ............................................................... </comment>
  <comment>
#1997-09-30: maler: Created %p.mix; to eliminate p from self.
#1997-09-30: maler: Added %speclist.class; to %obj.mix; and %p.mix;.
#1997-09-30: maler: Added %note.class; to %obj.mix; and %p.mix;.
#1997-10-16: maler: Created %entry.mix;.  Note that some elements
#                   left out here are still allowed in termdef,
#                   which entry can contain through %p.pcd.mix;.
#1997-11-28: maler: Added %p.class; to %statusobj.mix;.
#1998-03-10: maler: Added %ednote.class; to all mixtures, except
#                   %p.mix; and %statusobj.mix;, because paragraphs
#                   and status paragraphs will contain ednote
#                   through %p.pcd.mix;.
#1998-03-23: maler: Added %termdef.mix; (broken out from
#                    %termdef.pcd.mix;).
#1998-05-14: maler: Removed %statusobj.mix; and all mentions of
#                   %statusp.mix;.
</comment>
  <modelGroup name="div.mix">
    <choice>
      <modelGroupRef name="p.class"/>
      <modelGroupRef name="list.class"/>
      <modelGroupRef name="speclist.class"/>
      <modelGroupRef name="note.class"/>
      <modelGroupRef name="illus.class"/>
      <modelGroupRef name="ednote.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="obj.mix">
    <choice>
      <modelGroupRef name="p.class"/>
      <modelGroupRef name="list.class"/>
      <modelGroupRef name="speclist.class"/>
      <modelGroupRef name="note.class"/>
      <modelGroupRef name="illus.class"/>
      <modelGroupRef name="ednote.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="p.mix">
    <choice>
      <modelGroupRef name="list.class"/>
      <modelGroupRef name="speclist.class"/>
      <modelGroupRef name="note.class"/>
      <modelGroupRef name="illus.class"/>
    </choice>
  </modelGroup>
  <param name="entry.mix">%list.class;|note|eg|graphic|%ednote.class;</param>
  <modelGroup name="hdr.mix">
    <choice>
      <modelGroupRef name="p.class"/>
      <modelGroupRef name="list.class"/>
      <modelGroupRef name="ednote.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="termdef.mix">
    <choice>
      <modelGroupRef name="note.class"/>
      <modelGroupRef name="illus.class"/>
    </choice>
  </modelGroup>
  <comment> ............................................................... </comment>
  <comment> Entities for mixtures of #PCDATA and phrase-level elements .... </comment>
  <comment> ............................................................... </comment>
  <comment>    Note that %termdef.pcd.mix contains %note.class;
        and %illus.class;, considered standalone elements. </comment>
  <comment>
#1997-09-30: maler: Added scrap and %note.class; to %termdef.pcd.mix;.
#1997-11-28: maler: Added %loc.class; to %p.pcd.mix;.
#1998-03-10: maler: Added %ednote.class; to all mixtures.
#1998-03-23: maler: Moved some %termdef.pcd.mix; stuff out to
#                   %termdef.mix;.
#1998-05-14: maler: Removed %statusp.pcd.mix;.
#1998-05-21: maler: Added constraint element to %eg.pcd.mix;.
#1999-07-02: maler: Added %loc.class; to %head.pcd.mix;,
#                   %label.pcd.mix;, %eg.pcd.mix;, %termdef.pcd.mix;,
#                   %tech.pcd.mix; (net: all PCD mixes have it).
#                   Removed unused %loc.pcd.mix;.
</comment>
  <modelGroup name="p.pcd.mix">
    <choice>
      <pcdata/>
      <modelGroupRef name="annot.class"/>
      <modelGroupRef name="termdef.class"/>
      <modelGroupRef name="emph.class"/>
      <modelGroupRef name="ref.class"/>
      <modelGroupRef name="tech.class"/>
      <modelGroupRef name="loc.class"/>
      <modelGroupRef name="ednote.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="head.pcd.mix">
    <choice>
      <pcdata/>
      <modelGroupRef name="annot.class"/>
      <modelGroupRef name="emph.class"/>
      <modelGroupRef name="tech.class"/>
      <modelGroupRef name="loc.class"/>
      <modelGroupRef name="ednote.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="label.pcd.mix">
    <choice>
      <pcdata/>
      <modelGroupRef name="annot.class"/>
      <modelGroupRef name="termdef.class"/>
      <modelGroupRef name="emph.class"/>
      <modelGroupRef name="tech.class"/>
      <modelGroupRef name="loc.class"/>
      <modelGroupRef name="ednote.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="eg.pcd.mix">
    <choice>
      <pcdata/>
      <modelGroupRef name="annot.class"/>
      <modelGroupRef name="emph.class"/>
      <modelGroupRef name="loc.class"/>
      <modelGroupRef name="ednote.class"/>
      <elementRef>
        <name>constraint</name>
      </elementRef>
    </choice>
  </modelGroup>
  <modelGroup name="termdef.pcd.mix">
    <choice>
      <pcdata/>
      <elementRef>
        <name>term</name>
      </elementRef>
      <modelGroupRef name="emph.class"/>
      <modelGroupRef name="ref.class"/>
      <modelGroupRef name="tech.class"/>
      <modelGroupRef name="loc.class"/>
      <modelGroupRef name="ednote.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="bibl.pcd.mix">
    <choice>
      <pcdata/>
      <modelGroupRef name="emph.class"/>
      <modelGroupRef name="ref.class"/>
      <modelGroupRef name="loc.class"/>
      <modelGroupRef name="ednote.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="tech.pcd.mix">
    <choice>
      <pcdata/>
      <modelGroupRef name="loc.class"/>
      <modelGroupRef name="ednote.class"/>
    </choice>
  </modelGroup>
  <comment> ............................................................... </comment>
  <comment> Entities for customizable content models ...................... </comment>
  <comment> ............................................................... </comment>
  <comment>
#1998-03-10: maler: Added customization entities.
#1998-05-14: maler: Allowed prevlocs and latestloc in either order.
#1999-07-02: maler: Made version optional; added copyright element.
#2000-03-07: maler: Allowed status and abstract in opposite order.
</comment>
  <modelGroup name="spec.mdl">
    <sequence>
      <elementRef>
        <name>header</name>
      </elementRef>
      <optional>
        <elementRef>
          <name>front</name>
        </elementRef>
      </optional>
      <elementRef>
        <name>body</name>
      </elementRef>
      <optional>
        <elementRef>
          <name>back</name>
        </elementRef>
      </optional>
    </sequence>
  </modelGroup>
  <modelGroup name="header.mdl">
    <sequence>
      <elementRef>
        <name>title</name>
      </elementRef>
      <optional>
        <elementRef>
          <name>subtitle</name>
        </elementRef>
      </optional>
      <optional>
        <elementRef>
          <name>version</name>
        </elementRef>
      </optional>
      <elementRef>
        <name>w3c-designation</name>
      </elementRef>
      <elementRef>
        <name>w3c-doctype</name>
      </elementRef>
      <elementRef>
        <name>pubdate</name>
      </elementRef>
      <zeroOrMore>
        <elementRef>
          <name>notice</name>
        </elementRef>
      </zeroOrMore>
      <elementRef>
        <name>publoc</name>
      </elementRef>
      <optional>
        <choice>
          <sequence>
            <elementRef>
              <name>prevlocs</name>
            </elementRef>
            <optional>
              <elementRef>
                <name>latestloc</name>
              </elementRef>
            </optional>
          </sequence>
          <sequence>
            <elementRef>
              <name>latestloc</name>
            </elementRef>
            <optional>
              <elementRef>
                <name>prevlocs</name>
              </elementRef>
            </optional>
          </sequence>
        </choice>
      </optional>
      <elementRef>
        <name>authlist</name>
      </elementRef>
      <optional>
        <elementRef>
          <name>copyright</name>
        </elementRef>
      </optional>
      <choice>
        <sequence>
          <elementRef>
            <name>status</name>
          </elementRef>
          <elementRef>
            <name>abstract</name>
          </elementRef>
        </sequence>
        <sequence>
          <elementRef>
            <name>abstract</name>
          </elementRef>
          <elementRef>
            <name>status</name>
          </elementRef>
        </sequence>
      </choice>
      <optional>
        <elementRef>
          <name>pubstmt</name>
        </elementRef>
      </optional>
      <optional>
        <elementRef>
          <name>sourcedesc</name>
        </elementRef>
      </optional>
      <elementRef>
        <name>langusage</name>
      </elementRef>
      <elementRef>
        <name>revisiondesc</name>
      </elementRef>
    </sequence>
  </modelGroup>
  <modelGroup name="pubdate.mdl">
    <sequence>
      <optional>
        <elementRef>
          <name>day</name>
        </elementRef>
      </optional>
      <elementRef>
        <name>month</name>
      </elementRef>
      <elementRef>
        <name>year</name>
      </elementRef>
    </sequence>
  </modelGroup>
  <comment> ............................................................... </comment>
  <comment> Entities for common attributes ................................ </comment>
  <comment> ............................................................... </comment>
  <comment>
#2000-03-07: maler: Added %argtypes;.
</comment>
  <comment>    argtypes:
        Values for function prototype argument datatypes. </comment>
  <datatype name="argtypes">
    <tokenized>
      <enum>boolean</enum>
      <enum>expression</enum>
      <enum>location-set</enum>
      <enum>node-set</enum>
      <enum>number</enum>
      <enum>object</enum>
      <enum>point</enum>
      <enum>range</enum>
      <enum>string</enum>
    </tokenized>
  </datatype>
  <comment>    key attribute:
        Optionally provides a sorting or indexing key, for cases when
        the element content is inappropriate for this purpose. </comment>
  <attributeGroup name="key.att">
    <attribute>
      <name>key</name>
      <cdata/>
      <implied/>
    </attribute>
  </attributeGroup>
  <comment>    def attribute:
        Points to the element where the relevant definition can be
        found, using the IDREF mechanism.  %def.att; is for optional
        def attributes, and %def-req.att; is for required def
        attributes. </comment>
  <param name="def.att">def                    IDREF           #IMPLIED</param>
  <attributeGroup name="def-req.att">
    <attribute>
      <name>def</name>
      <tokenized name="IDREF"/>
      <required/>
    </attribute>
  </attributeGroup>
  <comment>    ref attribute:
        Points to the element where more information can be found,
        using the IDREF mechanism.  %ref.att; is for optional
        ref attributes, and %ref-req.att; is for required ref
        attributes. </comment>
  <param name="ref.att">ref                    IDREF           #IMPLIED</param>
  <attributeGroup name="ref-req.att">
    <attribute>
      <name>ref</name>
      <tokenized name="IDREF"/>
      <required/>
    </attribute>
  </attributeGroup>
  <comment>
#1998-03-23: maler: Added show and actuate attributes to href.
#                   Added semi-common xml:space attribute.
#1998-08-22: maler: Used new xlink:form and #IMPLIED features.
#1999-07-02: maler: Reorganized XLink-related entities completely;
#                   added xmlns:xlink attribute to the mix.
#2000-03-07: maler: Updated XLink usage to February 2000 draft,
#                   except that href still has no namespace prefix.
</comment>
  <comment>    xmlns:xlink and xlink:type attributes:
        xmlns:xlink declares the association of the xlink prefix
        with the namespace created by the XLink specification.
        xlink:type identifies an element as an XLink &quot;simple&quot; linking
        element. </comment>
  <attributeGroup name="simple-xlink.att">
    <attribute>
      <name>xmlns:xlink</name>
      <cdata/>
      <fixed>http://www.w3.org/1999/xlink</fixed>
    </attribute>
    <attribute>
      <name>xlink:type</name>
      <cdata/>
      <fixed>simple</fixed>
    </attribute>
  </attributeGroup>
  <comment>    href attributes:
        The href attribute locates the remote-resource half of a
        simple link; the element on which the href appears is the
        local-resource half.  Some elements are usable links only if
        the author chooses to supply a functional href.  The attribute
        name should really be xlink:href, but is kept without the
        prefix for now in order to be backwards-compatible. </comment>
  <attributeGroup name="href.att">
    <attribute>
      <name>href</name>
      <cdata/>
      <implied/>
    </attribute>
  </attributeGroup>
  <attributeGroup name="href-req.att">
    <attribute>
      <name>href</name>
      <cdata/>
      <required/>
    </attribute>
  </attributeGroup>
  <comment>    xlink:show and xlink:actuate attributes:
        These attributes offer instructions to the display engine
        about how to handle traversal to resource indicated by an
        href locator. </comment>
  <attributeGroup name="auto-embed.att">
    <attribute>
      <name>xlink:show</name>
      <cdata/>
      <fixed>embed</fixed>
    </attribute>
    <attribute>
      <name>xlink:actuate</name>
      <cdata/>
      <fixed>onLoad</fixed>
    </attribute>
  </attributeGroup>
  <attributeGroup name="user-replace.att">
    <attribute>
      <name>xlink:show</name>
      <cdata/>
      <fixed>replace</fixed>
    </attribute>
    <attribute>
      <name>xlink:actuate</name>
      <cdata/>
      <fixed>onRequest</fixed>
    </attribute>
  </attributeGroup>
  <attributeGroup name="user-new.att">
    <attribute>
      <name>xlink:show</name>
      <cdata/>
      <fixed>new</fixed>
    </attribute>
    <attribute>
      <name>xlink:actuate</name>
      <cdata/>
      <fixed>onRequest</fixed>
    </attribute>
  </attributeGroup>
  <comment>    xml:space attribute:
        Indicates that the element contains whitespace that the
        formatter or other application should retain, as appropriate
        to its function. </comment>
  <attributeGroup name="xmlspace.att">
    <attribute>
      <name>xml:space</name>
      <tokenized>
        <enum>default</enum>
        <enum>preserve</enum>
      </tokenized>
      <fixed>preserve</fixed>
    </attribute>
  </attributeGroup>
  <comment>
#2000-03-07: maler: Added common diff attribute.  Made %role.att;.
</comment>
  <comment>    diff attribute:
        Indicates in what way the element has changed.  When a value
        is not provided, that subelement should inherit a value from
        its parent.  If the root element has no value supplied,
        assume &quot;off&quot;. </comment>
  <attributeGroup name="diff.att">
    <attribute>
      <name>diff</name>
      <tokenized>
        <enum>chg</enum>
        <enum>add</enum>
        <enum>del</enum>
        <enum>off</enum>
      </tokenized>
      <implied/>
    </attribute>
  </attributeGroup>
  <comment>    role attribute:
        Extends the useful life of the DTD by allowing authors to
        make a subtype of any element.  No default. </comment>
  <attributeGroup name="role.att">
    <attribute>
      <name>role</name>
      <tokenized name="NMTOKEN"/>
      <implied/>
    </attribute>
  </attributeGroup>
  <comment>    Common attributes:
        Every element has an ID attribute for links, a role
        attribute, and a diff attribute. %common.att; is for
        common attributes where the ID is optional, and
        %common-idreq.att; is for common attributes where the
        ID is required. </comment>
  <attributeGroup name="common.att">
    <attribute>
      <name>id</name>
      <tokenized name="ID"/>
      <implied/>
    </attribute>
    <attributeGroupRef name="role.att"/>
    <attributeGroupRef name="diff.att"/>
  </attributeGroup>
  <attributeGroup name="common-idreq.att">
    <attribute>
      <name>id</name>
      <tokenized name="ID"/>
      <required/>
    </attribute>
    <attributeGroupRef name="role.att"/>
    <attributeGroupRef name="diff.att"/>
  </attributeGroup>
  <comment> ............................................................... </comment>
  <comment> Common elements ............................................... </comment>
  <comment> ............................................................... </comment>
  <comment>    head: Title on divisions, productions, and the like </comment>
  <element>
    <name>head</name>
    <zeroOrMore>
      <modelGroupRef name="head.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>head</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment> ............................................................... </comment>
  <comment> Major specification structure ................................. </comment>
  <comment> ............................................................... </comment>
  <comment>
#1998-03-10: maler: Made spec content model easily customizable.
#1999-07-02: maler: Added doctype atts and status att.
#2000-03-07: maler: Added cr, issues, and dispcmts to w3c-doctype.
</comment>
  <element>
    <name>spec</name>
    <modelGroupRef name="spec.mdl"/>
  </element>
  <comment>    w3c-doctype attributes:
        Indicates the type of document, so that the appropriate
        stylesheet or workflow routing can be applied.  Should
        *not* generate any text (such as the &quot;REC-&quot; or &quot;NOTE-&quot;
        prefix on the W3C designation content).  No default.  If
        w3c-doctype is &quot;other&quot;, other-doctype should be filled in.

        status attribute:
        Indicates the stage of review of the document.  May affect
        the stylesheet's treatment of ednotes (e.g., whether to
        output them).  No default. </comment>
  <attlist>
    <name>spec</name>
    <attributeGroupRef name="common.att"/>
    <attribute>
      <name>w3c-doctype</name>
      <tokenized>
        <enum>cr</enum>
        <enum>dispcmts</enum>
        <enum>issues</enum>
        <enum>note</enum>
        <enum>other</enum>
        <enum>pr</enum>
        <enum>rec</enum>
        <enum>wd</enum>
      </tokenized>
      <implied/>
    </attribute>
    <attribute>
      <name>other-doctype</name>
      <cdata/>
      <implied/>
    </attribute>
    <attribute>
      <name>status</name>
      <tokenized>
        <enum>int-review</enum>
        <enum>ext-review</enum>
        <enum>final</enum>
      </tokenized>
      <implied/>
    </attribute>
  </attlist>
  <element>
    <name>front</name>
    <oneOrMore>
      <elementRef>
        <name>div1</name>
      </elementRef>
    </oneOrMore>
  </element>
  <attlist>
    <name>front</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>body</name>
    <oneOrMore>
      <elementRef>
        <name>div1</name>
      </elementRef>
    </oneOrMore>
  </element>
  <attlist>
    <name>body</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#1997-09-30: maler: Added inform-div1 to back content.
</comment>
  <element>
    <name>back</name>
    <choice>
      <sequence>
        <oneOrMore>
          <elementRef>
            <name>div1</name>
          </elementRef>
        </oneOrMore>
        <zeroOrMore>
          <elementRef>
            <name>inform-div1</name>
          </elementRef>
        </zeroOrMore>
      </sequence>
      <oneOrMore>
        <elementRef>
          <name>inform-div1</name>
        </elementRef>
      </oneOrMore>
    </choice>
  </element>
  <attlist>
    <name>back</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>div1</name>
    <sequence>
      <elementRef>
        <name>head</name>
      </elementRef>
      <zeroOrMore>
        <modelGroupRef name="div.mix"/>
      </zeroOrMore>
      <zeroOrMore>
        <elementRef>
          <name>div2</name>
        </elementRef>
      </zeroOrMore>
    </sequence>
  </element>
  <attlist>
    <name>div1</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#1997-09-30: maler: Added inform-div1 declarations.
#2000-03-07: maler: Added div5 level.
</comment>
  <comment>    inform-div1: Non-normative division in back matter </comment>
  <element>
    <name>inform-div1</name>
    <sequence>
      <elementRef>
        <name>head</name>
      </elementRef>
      <zeroOrMore>
        <modelGroupRef name="div.mix"/>
      </zeroOrMore>
      <zeroOrMore>
        <elementRef>
          <name>div2</name>
        </elementRef>
      </zeroOrMore>
    </sequence>
  </element>
  <attlist>
    <name>inform-div1</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>div2</name>
    <sequence>
      <elementRef>
        <name>head</name>
      </elementRef>
      <zeroOrMore>
        <modelGroupRef name="div.mix"/>
      </zeroOrMore>
      <zeroOrMore>
        <elementRef>
          <name>div3</name>
        </elementRef>
      </zeroOrMore>
    </sequence>
  </element>
  <attlist>
    <name>div2</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>div3</name>
    <sequence>
      <elementRef>
        <name>head</name>
      </elementRef>
      <zeroOrMore>
        <modelGroupRef name="div.mix"/>
      </zeroOrMore>
      <zeroOrMore>
        <elementRef>
          <name>div4</name>
        </elementRef>
      </zeroOrMore>
    </sequence>
  </element>
  <attlist>
    <name>div3</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>div4</name>
    <sequence>
      <elementRef>
        <name>head</name>
      </elementRef>
      <zeroOrMore>
        <modelGroupRef name="div.mix"/>
      </zeroOrMore>
      <zeroOrMore>
        <elementRef>
          <name>div5</name>
        </elementRef>
      </zeroOrMore>
    </sequence>
  </element>
  <attlist>
    <name>div4</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>div5</name>
    <sequence>
      <elementRef>
        <name>head</name>
      </elementRef>
      <zeroOrMore>
        <modelGroupRef name="div.mix"/>
      </zeroOrMore>
    </sequence>
  </element>
  <attlist>
    <name>div5</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment> ............................................................... </comment>
  <comment> Specification header .......................................... </comment>
  <comment> ............................................................... </comment>
  <comment>
#1998-03-10: maler: Made header content model easily customizable.
</comment>
  <element>
    <name>header</name>
    <modelGroupRef name="header.mdl"/>
  </element>
  <attlist>
    <name>header</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    Example of title: &quot;Extensible Cheese Language (XCL)&quot; </comment>
  <element>
    <name>title</name>
    <pcdata/>
  </element>
  <attlist>
    <name>title</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    Example of subtitle: &quot;A Cheesy Specification&quot; </comment>
  <element>
    <name>subtitle</name>
    <pcdata/>
  </element>
  <attlist>
    <name>subtitle</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    Example of version: &quot;Version 666.0&quot; </comment>
  <element>
    <name>version</name>
    <pcdata/>
  </element>
  <attlist>
    <name>version</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    Example of w3c-designation: &quot;WD-xcl-19991231&quot; </comment>
  <element>
    <name>w3c-designation</name>
    <pcdata/>
  </element>
  <attlist>
    <name>w3c-designation</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    Example of w3c-doctype: &quot;W3C Working Draft&quot; </comment>
  <element>
    <name>w3c-doctype</name>
    <pcdata/>
  </element>
  <attlist>
    <name>w3c-doctype</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#1998-03-10: maler: Made pubdate content model easily customizable.
</comment>
  <element>
    <name>pubdate</name>
    <modelGroupRef name="pubdate.mdl"/>
  </element>
  <attlist>
    <name>pubdate</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>day</name>
    <pcdata/>
  </element>
  <attlist>
    <name>day</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>month</name>
    <pcdata/>
  </element>
  <attlist>
    <name>month</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>year</name>
    <pcdata/>
  </element>
  <attlist>
    <name>year</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#1999-07-02: maler: Declared copyright element.
</comment>
  <element>
    <name>copyright</name>
    <oneOrMore>
      <modelGroupRef name="hdr.mix"/>
    </oneOrMore>
  </element>
  <attlist>
    <name>copyright</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    Example of notice: &quot;This draft is for public comment...&quot; </comment>
  <element>
    <name>notice</name>
    <oneOrMore>
      <modelGroupRef name="hdr.mix"/>
    </oneOrMore>
  </element>
  <attlist>
    <name>notice</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#2000-03-07: maler: Broadened models of *loc to %p.pcd.mix;.
</comment>
  <element>
    <name>publoc</name>
    <zeroOrMore>
      <modelGroupRef name="p.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>publoc</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>prevlocs</name>
    <zeroOrMore>
      <modelGroupRef name="p.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>prevlocs</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>latestloc</name>
    <zeroOrMore>
      <modelGroupRef name="p.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>latestloc</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>      loc (defined in &quot;Phrase-level elements&quot; below) </comment>
  <element>
    <name>authlist</name>
    <oneOrMore>
      <elementRef>
        <name>author</name>
      </elementRef>
    </oneOrMore>
  </element>
  <attlist>
    <name>authlist</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#1997-09-30: maler: Made affiliation optional.
#1998-03-10: maler: Made email optional.
</comment>
  <element>
    <name>author</name>
    <sequence>
      <elementRef>
        <name>name</name>
      </elementRef>
      <optional>
        <elementRef>
          <name>affiliation</name>
        </elementRef>
      </optional>
      <optional>
        <elementRef>
          <name>email</name>
        </elementRef>
      </optional>
    </sequence>
  </element>
  <attlist>
    <name>author</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>name</name>
    <pcdata/>
  </element>
  <attlist>
    <name>name</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="key.att"/>
  </attlist>
  <element>
    <name>affiliation</name>
    <pcdata/>
  </element>
  <attlist>
    <name>affiliation</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#1999-07-02: maler: Added show/actuate attributes and default values.
</comment>
  <element>
    <name>email</name>
    <pcdata/>
  </element>
  <comment>    href attribute:
        email functions as a hypertext reference through this
        required attribute.  Typically the reference would use
        the mailto: scheme.  E.g.:

&lt;email href=&quot;mailto:elm@arbortext.com&quot;&gt;elm@arbortext.com&lt;/email&gt;
        </comment>
  <attlist>
    <name>email</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="simple-xlink.att"/>
    <attributeGroupRef name="href-req.att"/>
    <attributeGroupRef name="user-new.att"/>
  </attlist>
  <comment>
#1998-05-15: maler: Changed status content from %statusobj.mix;
#                   to plain %obj.mix;.  statusp is obsolete.
</comment>
  <element>
    <name>status</name>
    <oneOrMore>
      <modelGroupRef name="obj.mix"/>
    </oneOrMore>
  </element>
  <attlist>
    <name>status</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>abstract</name>
    <zeroOrMore>
      <modelGroupRef name="hdr.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>abstract</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>pubstmt</name>
    <oneOrMore>
      <modelGroupRef name="hdr.mix"/>
    </oneOrMore>
  </element>
  <attlist>
    <name>pubstmt</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>sourcedesc</name>
    <oneOrMore>
      <modelGroupRef name="hdr.mix"/>
    </oneOrMore>
  </element>
  <attlist>
    <name>sourcedesc</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>langusage</name>
    <oneOrMore>
      <elementRef>
        <name>language</name>
      </elementRef>
    </oneOrMore>
  </element>
  <attlist>
    <name>langusage</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>language</name>
    <pcdata/>
  </element>
  <attlist>
    <name>language</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>revisiondesc</name>
    <oneOrMore>
      <modelGroupRef name="hdr.mix"/>
    </oneOrMore>
  </element>
  <attlist>
    <name>revisiondesc</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment> ............................................................... </comment>
  <comment> Paragraph ..................................................... </comment>
  <comment> ............................................................... </comment>
  <comment>
#1997-09-30: maler: Changed from %obj.mix; to %p.mix;.
#1997-12-29: maler: Changed order of %p.mix; and %p.pcd.mix;
#                   references.
#1997-12-29: maler: Changed order of %statusobj.mix; and
#                   %statusp.pcd.mix; references.
#1998-05-14: maler: Removed statusp declarations.
</comment>
  <element>
    <name>p</name>
    <zeroOrMore>
      <choice>
        <modelGroupRef name="p.pcd.mix"/>
        <modelGroupRef name="p.mix"/>
      </choice>
    </zeroOrMore>
  </element>
  <attlist>
    <name>p</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment> ............................................................... </comment>
  <comment> Regular lists ................................................. </comment>
  <comment> ............................................................... </comment>
  <comment>    ulist: Unordered list, typically bulleted. </comment>
  <element>
    <name>ulist</name>
    <oneOrMore>
      <elementRef>
        <name>item</name>
      </elementRef>
    </oneOrMore>
  </element>
  <comment>    spacing attribute:
        Use &quot;normal&quot; to get normal vertical spacing for items;
        use &quot;compact&quot; to get less spacing.  The default is dependent
        on the stylesheet. </comment>
  <attlist>
    <name>ulist</name>
    <attributeGroupRef name="common.att"/>
    <attribute>
      <name>spacing</name>
      <tokenized>
        <enum>normal</enum>
        <enum>compact</enum>
      </tokenized>
      <implied/>
    </attribute>
  </attlist>
  <comment>    olist: Ordered list, typically numbered. </comment>
  <element>
    <name>olist</name>
    <oneOrMore>
      <elementRef>
        <name>item</name>
      </elementRef>
    </oneOrMore>
  </element>
  <comment>    spacing attribute:
        Use &quot;normal&quot; to get normal vertical spacing for items;
        use &quot;compact&quot; to get less spacing.  The default is dependent
        on the stylesheet. </comment>
  <attlist>
    <name>olist</name>
    <attributeGroupRef name="common.att"/>
    <attribute>
      <name>spacing</name>
      <tokenized>
        <enum>normal</enum>
        <enum>compact</enum>
      </tokenized>
      <implied/>
    </attribute>
  </attlist>
  <element>
    <name>item</name>
    <oneOrMore>
      <modelGroupRef name="obj.mix"/>
    </oneOrMore>
  </element>
  <attlist>
    <name>item</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    slist: Simple list, typically with no mark. </comment>
  <element>
    <name>slist</name>
    <oneOrMore>
      <elementRef>
        <name>sitem</name>
      </elementRef>
    </oneOrMore>
  </element>
  <attlist>
    <name>slist</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>sitem</name>
    <zeroOrMore>
      <modelGroupRef name="p.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>sitem</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    glist: Glossary list, typically two-column. </comment>
  <element>
    <name>glist</name>
    <oneOrMore>
      <elementRef>
        <name>gitem</name>
      </elementRef>
    </oneOrMore>
  </element>
  <attlist>
    <name>glist</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>gitem</name>
    <sequence>
      <elementRef>
        <name>label</name>
      </elementRef>
      <elementRef>
        <name>def</name>
      </elementRef>
    </sequence>
  </element>
  <attlist>
    <name>gitem</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>label</name>
    <zeroOrMore>
      <modelGroupRef name="label.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>label</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>def</name>
    <zeroOrMore>
      <modelGroupRef name="obj.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>def</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment> ............................................................... </comment>
  <comment> Special lists ................................................. </comment>
  <comment> ............................................................... </comment>
  <comment>    blist: Bibliography list. </comment>
  <element>
    <name>blist</name>
    <oneOrMore>
      <elementRef>
        <name>bibl</name>
      </elementRef>
    </oneOrMore>
  </element>
  <attlist>
    <name>blist</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#1999-07-02: maler: Added show/actuate attributes and default values.
</comment>
  <element>
    <name>bibl</name>
    <zeroOrMore>
      <modelGroupRef name="bibl.pcd.mix"/>
    </zeroOrMore>
  </element>
  <comment>    href attribute:
        bibl optionally functions as a hypertext reference to the
        referred-to resource through this attribute.  E.g.:

        &lt;bibl href=&quot;http://www.my.com/doc.htm&quot;&gt;My Document&lt;/bibl&gt;
        </comment>
  <attlist>
    <name>bibl</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="simple-xlink.att"/>
    <attributeGroupRef name="href.att"/>
    <attributeGroupRef name="user-replace.att"/>
    <attributeGroupRef name="key.att"/>
  </attlist>
  <comment>    orglist: Organization member list. </comment>
  <element>
    <name>orglist</name>
    <oneOrMore>
      <elementRef>
        <name>member</name>
      </elementRef>
    </oneOrMore>
  </element>
  <attlist>
    <name>orglist</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#1997-09-30: maler: Added optional affiliation.
</comment>
  <element>
    <name>member</name>
    <sequence>
      <elementRef>
        <name>name</name>
      </elementRef>
      <optional>
        <elementRef>
          <name>affiliation</name>
        </elementRef>
      </optional>
      <optional>
        <elementRef>
          <name>role</name>
        </elementRef>
      </optional>
    </sequence>
  </element>
  <attlist>
    <name>member</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>      name (defined in &quot;Specification header&quot; above) </comment>
  <comment>      affiliation (defined in &quot;Specification header&quot; above) </comment>
  <element>
    <name>role</name>
    <pcdata/>
  </element>
  <attlist>
    <name>role</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment> ............................................................... </comment>
  <comment> Notes ......................................................... </comment>
  <comment> ............................................................... </comment>
  <element>
    <name>note</name>
    <oneOrMore>
      <modelGroupRef name="obj.mix"/>
    </oneOrMore>
  </element>
  <attlist>
    <name>note</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#1998-05-14: maler: Declared issue element.
#2000-03-07: maler: Added head, source, resolution, and status.
</comment>
  <element>
    <name>issue</name>
    <sequence>
      <optional>
        <elementRef>
          <name>head</name>
        </elementRef>
      </optional>
      <zeroOrMore>
        <elementRef>
          <name>source</name>
        </elementRef>
      </zeroOrMore>
      <oneOrMore>
        <modelGroupRef name="obj.mix"/>
      </oneOrMore>
      <optional>
        <elementRef>
          <name>resolution</name>
        </elementRef>
      </optional>
    </sequence>
  </element>
  <comment>    status attribute:
        Indicates whether the issue is open or closed.  Note that
        the lack of a resolution element does not necessarily mean
        that the issue is still open. </comment>
  <attlist>
    <name>issue</name>
    <attribute>
      <name>id</name>
      <tokenized name="ID"/>
      <required/>
    </attribute>
    <attributeGroupRef name="role.att"/>
    <attributeGroupRef name="diff.att"/>
    <attribute>
      <name>status</name>
      <tokenized>
        <enum>open</enum>
        <enum>closed</enum>
      </tokenized>
      <default>open</default>
    </attribute>
  </attlist>
  <element>
    <name>source</name>
    <zeroOrMore>
      <modelGroupRef name="p.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>source</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>resolution</name>
    <oneOrMore>
      <modelGroupRef name="obj.mix"/>
    </oneOrMore>
  </element>
  <attlist>
    <name>resolution</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    wfcnote: Well-formedness constraint note. </comment>
  <element>
    <name>wfcnote</name>
    <sequence>
      <elementRef>
        <name>head</name>
      </elementRef>
      <oneOrMore>
        <modelGroupRef name="obj.mix"/>
      </oneOrMore>
    </sequence>
  </element>
  <comment>    ID attribute:
        wfcnote must have an ID so that it can be pointed to
        from a wfc element in a production. </comment>
  <attlist>
    <name>wfcnote</name>
    <attributeGroupRef name="common-idreq.att"/>
  </attlist>
  <comment>    vcnote: Validity constraint note. </comment>
  <element>
    <name>vcnote</name>
    <sequence>
      <elementRef>
        <name>head</name>
      </elementRef>
      <oneOrMore>
        <modelGroupRef name="obj.mix"/>
      </oneOrMore>
    </sequence>
  </element>
  <comment>    ID attribute:
        vcnote must have an ID so that it can be pointed to
        from a vc element in a production. </comment>
  <attlist>
    <name>vcnote</name>
    <attributeGroupRef name="common-idreq.att"/>
  </attlist>
  <comment>
#1998-05-21: maler: Declared generic constraintnote element.
</comment>
  <comment>    constraintnote: Generic constraint note. </comment>
  <element>
    <name>constraintnote</name>
    <sequence>
      <elementRef>
        <name>head</name>
      </elementRef>
      <oneOrMore>
        <modelGroupRef name="obj.mix"/>
      </oneOrMore>
    </sequence>
  </element>
  <comment>    ID attribute:
        constraintnote must have an ID so that it can be
        pointed to from a constraint element in a production. </comment>
  <comment>    type attribute:
        constraintnote must have a type value keyword so that
        it can be correctly characterized in the specification. </comment>
  <attlist>
    <name>constraintnote</name>
    <attributeGroupRef name="common-idreq.att"/>
    <attribute>
      <name>type</name>
      <tokenized name="NMTOKEN"/>
      <required/>
    </attribute>
  </attlist>
  <comment> ............................................................... </comment>
  <comment> Basic display elements ........................................ </comment>
  <comment> ............................................................... </comment>
  <comment>
#1998-03-23: maler: Added xml:space attribute.
</comment>
  <comment>    eg: Example element, with whitespace respected. </comment>
  <element>
    <name>eg</name>
    <zeroOrMore>
      <modelGroupRef name="eg.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>eg</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="xmlspace.att"/>
  </attlist>
  <comment>
#2000-03-07: maler: Removed the xml:attributes attribute.
#                   Added %local.graphic.att;.
</comment>
  <comment>    graphic: Displayed graphic.  Graphic data should be
        displayed at the point where it is referenced.  Not
        actually conforming to XLink right now. </comment>
  <element>
    <name>graphic</name>
    <sequence/>
  </element>
  <comment>    source attribute:
        The graphic data must reside at the location pointed to. </comment>
  <attributeGroup name="local.graphic.att"/>
  <attlist>
    <name>graphic</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="simple-xlink.att"/>
    <attribute>
      <name>source</name>
      <cdata/>
      <required/>
    </attribute>
    <attributeGroupRef name="auto-embed.att"/>
    <attribute>
      <name>alt</name>
      <cdata/>
      <implied/>
    </attribute>
    <attributeGroupRef name="local.graphic.att"/>
  </attlist>
  <comment>
#2000-03-07: maler: Added proto element structure.
</comment>
  <comment>    proto: Function prototype, in the XPath/XPointer style. </comment>
  <element>
    <name>proto</name>
    <zeroOrMore>
      <elementRef>
        <name>arg</name>
      </elementRef>
    </zeroOrMore>
  </element>
  <attlist>
    <name>proto</name>
    <attributeGroupRef name="common.att"/>
    <attribute>
      <name>name</name>
      <tokenized name="NMTOKEN"/>
      <required/>
    </attribute>
    <attribute>
      <name>return-type</name>
      <datatypeRef name="argtypes"/>
      <required/>
    </attribute>
  </attlist>
  <element>
    <name>arg</name>
    <sequence/>
  </element>
  <attlist>
    <name>arg</name>
    <attributeGroupRef name="common.att"/>
    <attribute>
      <name>type</name>
      <datatypeRef name="argtypes"/>
      <required/>
    </attribute>
    <attribute>
      <name>occur</name>
      <tokenized>
        <enum>opt</enum>
        <enum>req</enum>
      </tokenized>
      <implied/>
    </attribute>
  </attlist>
  <comment>
#2000-03-07: maler: Added example element.
</comment>
  <element>
    <name>example</name>
    <sequence>
      <optional>
        <elementRef>
          <name>head</name>
        </elementRef>
      </optional>
      <oneOrMore>
        <modelGroupRef name="obj.mix"/>
      </oneOrMore>
    </sequence>
  </element>
  <attlist>
    <name>example</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment> ............................................................... </comment>
  <comment> EBNF .......................................................... </comment>
  <comment> ............................................................... </comment>
  <comment>
#1997-11-28: maler: Added prodgroup to scrap and defined it.
#1998-05-21: maler: Added constraint to prod.
#1999-07-02: maler: Added prodrecap to scrap; broadened scrap model.
#                   Added headstyle attribute to scrap.
</comment>
  <comment>    scrap: Collection of EBNF language productions. </comment>
  <element>
    <name>scrap</name>
    <sequence>
      <elementRef>
        <name>head</name>
      </elementRef>
      <oneOrMore>
        <choice>
          <elementRef>
            <name>prodgroup</name>
          </elementRef>
          <elementRef>
            <name>prod</name>
          </elementRef>
          <elementRef>
            <name>bnf</name>
          </elementRef>
          <elementRef>
            <name>prodrecap</name>
          </elementRef>
        </choice>
      </oneOrMore>
    </sequence>
  </element>
  <comment>    lang attribute:
        The scrap can link to a description of the language used,
        found in a language element in the header.
        headstyle attribute:
        Allows a scrap title to be suppressed from output.  To be
        used only when a scrap title directly next to a section
        title is distracting or repetetive. </comment>
  <attlist>
    <name>scrap</name>
    <attributeGroupRef name="common.att"/>
    <attribute>
      <name>lang</name>
      <tokenized name="IDREF"/>
      <implied/>
    </attribute>
    <attribute>
      <name>headstyle</name>
      <tokenized>
        <enum>show</enum>
        <enum>suppress</enum>
      </tokenized>
      <default>show</default>
    </attribute>
  </attlist>
  <comment>    prodgroup: Sub-collection of productions, needed for
        formatting reasons. </comment>
  <element>
    <name>prodgroup</name>
    <oneOrMore>
      <elementRef>
        <name>prod</name>
      </elementRef>
    </oneOrMore>
  </element>
  <comment>    pcw&lt;n&gt; attributes:
        Presentational attributes to control the width
        of the &quot;pseudo-table&quot; columns used to output
        groups of productions. </comment>
  <attlist>
    <name>prodgroup</name>
    <attributeGroupRef name="common.att"/>
    <attribute>
      <name>pcw1</name>
      <cdata/>
      <implied/>
    </attribute>
    <attribute>
      <name>pcw2</name>
      <cdata/>
      <implied/>
    </attribute>
    <attribute>
      <name>pcw3</name>
      <cdata/>
      <implied/>
    </attribute>
    <attribute>
      <name>pcw4</name>
      <cdata/>
      <implied/>
    </attribute>
    <attribute>
      <name>pcw5</name>
      <cdata/>
      <implied/>
    </attribute>
  </attlist>
  <comment>    prod: EBNF language production. </comment>
  <element>
    <name>prod</name>
    <sequence>
      <elementRef>
        <name>lhs</name>
      </elementRef>
      <oneOrMore>
        <sequence>
          <elementRef>
            <name>rhs</name>
          </elementRef>
          <zeroOrMore>
            <choice>
              <elementRef>
                <name>com</name>
              </elementRef>
              <elementRef>
                <name>wfc</name>
              </elementRef>
              <elementRef>
                <name>vc</name>
              </elementRef>
              <elementRef>
                <name>constraint</name>
              </elementRef>
            </choice>
          </zeroOrMore>
        </sequence>
      </oneOrMore>
    </sequence>
  </element>
  <comment>    ID attribute:
        The production must have an ID so that cross-references
        (specref) and mentions of nonterminals (nt) can link to
        it. </comment>
  <attlist>
    <name>prod</name>
    <attributeGroupRef name="common-idreq.att"/>
  </attlist>
  <comment>    lhs: Left-hand side of production. </comment>
  <element>
    <name>lhs</name>
    <pcdata/>
  </element>
  <attlist>
    <name>lhs</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    rhs: Right-hand side of production; may have many
        &quot;right-hand sides,&quot; one to a line. </comment>
  <element>
    <name>rhs</name>
    <zeroOrMore>
      <choice>
        <pcdata/>
        <elementRef>
          <name>nt</name>
        </elementRef>
        <elementRef>
          <name>xnt</name>
        </elementRef>
        <elementRef>
          <name>com</name>
        </elementRef>
      </choice>
    </zeroOrMore>
  </element>
  <attlist>
    <name>rhs</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>      nt and xnt (defined in &quot;Phrase-level elements&quot; below) </comment>
  <comment>
#1997-11-28: maler: Added loc and bibref to com content.
</comment>
  <comment>    com: Production comment. </comment>
  <element>
    <name>com</name>
    <zeroOrMore>
      <choice>
        <pcdata/>
        <elementRef>
          <name>loc</name>
        </elementRef>
        <elementRef>
          <name>bibref</name>
        </elementRef>
      </choice>
    </zeroOrMore>
  </element>
  <attlist>
    <name>com</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    wfc: Reference to a well-formedness constraint; should
        generate the head of the wfcnote pointed to. </comment>
  <element>
    <name>wfc</name>
    <sequence/>
  </element>
  <comment>    def attribute:
        Each well formedness tagline in a production must link to the
        wfcnote that defines it. </comment>
  <attlist>
    <name>wfc</name>
    <attributeGroupRef name="def-req.att"/>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    vc: Reference to a validity constraint; should generate
        the head of the vcnote pointed to. </comment>
  <element>
    <name>vc</name>
    <sequence/>
  </element>
  <comment>    def attribute:
        Each validity tagline in a production must link to the vcnote
        that defines it. </comment>
  <attlist>
    <name>vc</name>
    <attributeGroupRef name="def-req.att"/>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#1998-05-21: maler: Declared generic constraint element.
</comment>
  <comment>    constraint: Reference to a generic constraint; should
        generate the head of the constraintnote pointed to. </comment>
  <element>
    <name>constraint</name>
    <sequence/>
  </element>
  <comment>    def attribute:
        Each constraint tagline in a production must link to the
        constraint note that defines it. </comment>
  <attlist>
    <name>constraint</name>
    <attributeGroupRef name="def-req.att"/>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#1998-03-23: maler: Added xml:space attribute.
</comment>
  <comment>    bnf: Un-marked-up EBNF production, with whitespace
        respected. </comment>
  <element>
    <name>bnf</name>
    <zeroOrMore>
      <modelGroupRef name="eg.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>bnf</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="xmlspace.att"/>
  </attlist>
  <comment>
#1999-07-02: maler: Declared prodrecap.
</comment>
  <comment>    prodrecap: Reference to production or bnf that appears
        in its &quot;normative&quot; form elsewhere in the spec; should
        generate a copy of the original production, without
        a production number next to it. </comment>
  <element>
    <name>prodrecap</name>
    <sequence/>
  </element>
  <attlist>
    <name>prodrecap</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="ref-req.att"/>
  </attlist>
  <comment> ............................................................... </comment>
  <comment> Table ......................................................... </comment>
  <comment> ............................................................... </comment>
  <comment>
#1997-10-16: maler: Added table mechanism.
#1997-11-28: maler: Added non-null system ID to entity declaration.
#                   Added HTML table module.
#1997-12-29: maler: IGNOREd SGML Open table model.
#1998-03-10: maler: Removed SGML Open table model.
#                   Merged html-tbl.mod file into main file.
#                   Added %common.att; to all HTML table elements.
#1998-05-14: maler: Replaced table model with full HTML 4.0 model.
#                   Removed htable in favor of table.
#                   Removed htbody in favor of tbody.
</comment>
  <attributeGroup name="cellhalign.att">
    <attribute>
      <name>align</name>
      <tokenized>
        <enum>left</enum>
        <enum>center</enum>
        <enum>right</enum>
        <enum>justify</enum>
        <enum>char</enum>
      </tokenized>
      <implied/>
    </attribute>
    <attribute>
      <name>char</name>
      <cdata/>
      <implied/>
    </attribute>
    <attribute>
      <name>charoff</name>
      <cdata/>
      <implied/>
    </attribute>
  </attributeGroup>
  <attributeGroup name="cellvalign.att">
    <attribute>
      <name>valign</name>
      <tokenized>
        <enum>top</enum>
        <enum>middle</enum>
        <enum>bottom</enum>
        <enum>baseline</enum>
      </tokenized>
      <implied/>
    </attribute>
  </attributeGroup>
  <attributeGroup name="thtd.att">
    <attribute>
      <name>abbr</name>
      <cdata/>
      <implied/>
    </attribute>
    <attribute>
      <name>axis</name>
      <cdata/>
      <implied/>
    </attribute>
    <attribute>
      <name>headers</name>
      <tokenized name="IDREFS"/>
      <implied/>
    </attribute>
    <attribute>
      <name>scope</name>
      <tokenized>
        <enum>row</enum>
        <enum>col</enum>
        <enum>rowgroup</enum>
        <enum>colgroup</enum>
      </tokenized>
      <implied/>
    </attribute>
    <attribute>
      <name>rowspan</name>
      <tokenized name="NMTOKEN"/>
      <default>1</default>
    </attribute>
    <attribute>
      <name>colspan</name>
      <tokenized name="NMTOKEN"/>
      <default>1</default>
    </attribute>
  </attributeGroup>
  <attributeGroup name="width.att">
    <attribute>
      <name>width</name>
      <cdata/>
      <implied/>
    </attribute>
  </attributeGroup>
  <attributeGroup name="span.att">
    <attribute>
      <name>span</name>
      <tokenized name="NMTOKEN"/>
      <default>1</default>
    </attribute>
  </attributeGroup>
  <comment>    table: HTML-based geometric table model. </comment>
  <element>
    <name>table</name>
    <sequence>
      <optional>
        <elementRef>
          <name>caption</name>
        </elementRef>
      </optional>
      <choice>
        <zeroOrMore>
          <elementRef>
            <name>col</name>
          </elementRef>
        </zeroOrMore>
        <zeroOrMore>
          <elementRef>
            <name>colgroup</name>
          </elementRef>
        </zeroOrMore>
      </choice>
      <optional>
        <elementRef>
          <name>thead</name>
        </elementRef>
      </optional>
      <optional>
        <elementRef>
          <name>tfoot</name>
        </elementRef>
      </optional>
      <oneOrMore>
        <elementRef>
          <name>tbody</name>
        </elementRef>
      </oneOrMore>
    </sequence>
  </element>
  <attlist>
    <name>table</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="width.att"/>
    <attribute>
      <name>summary</name>
      <cdata/>
      <implied/>
    </attribute>
    <attribute>
      <name>border</name>
      <cdata/>
      <implied/>
    </attribute>
    <attribute>
      <name>frame</name>
      <tokenized>
        <enum>void</enum>
        <enum>above</enum>
        <enum>below</enum>
        <enum>hsides</enum>
        <enum>lhs</enum>
        <enum>rhs</enum>
        <enum>vsides</enum>
        <enum>box</enum>
        <enum>border</enum>
      </tokenized>
      <implied/>
    </attribute>
    <attribute>
      <name>rules</name>
      <tokenized>
        <enum>none</enum>
        <enum>groups</enum>
        <enum>rows</enum>
        <enum>cols</enum>
        <enum>all</enum>
      </tokenized>
      <implied/>
    </attribute>
    <attribute>
      <name>cellspacing</name>
      <cdata/>
      <implied/>
    </attribute>
    <attribute>
      <name>cellpadding</name>
      <cdata/>
      <implied/>
    </attribute>
  </attlist>
  <element>
    <name>caption</name>
    <zeroOrMore>
      <modelGroupRef name="p.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>caption</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>col</name>
    <sequence/>
  </element>
  <attlist>
    <name>col</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="span.att"/>
    <attributeGroupRef name="width.att"/>
    <attributeGroupRef name="cellhalign.att"/>
    <attributeGroupRef name="cellvalign.att"/>
  </attlist>
  <element>
    <name>colgroup</name>
    <zeroOrMore>
      <elementRef>
        <name>col</name>
      </elementRef>
    </zeroOrMore>
  </element>
  <attlist>
    <name>colgroup</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="span.att"/>
    <attributeGroupRef name="width.att"/>
    <attributeGroupRef name="cellhalign.att"/>
    <attributeGroupRef name="cellvalign.att"/>
  </attlist>
  <element>
    <name>thead</name>
    <oneOrMore>
      <elementRef>
        <name>tr</name>
      </elementRef>
    </oneOrMore>
  </element>
  <attlist>
    <name>thead</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="cellhalign.att"/>
    <attributeGroupRef name="cellvalign.att"/>
  </attlist>
  <element>
    <name>tfoot</name>
    <oneOrMore>
      <elementRef>
        <name>tr</name>
      </elementRef>
    </oneOrMore>
  </element>
  <attlist>
    <name>tfoot</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="cellhalign.att"/>
    <attributeGroupRef name="cellvalign.att"/>
  </attlist>
  <element>
    <name>tbody</name>
    <oneOrMore>
      <elementRef>
        <name>tr</name>
      </elementRef>
    </oneOrMore>
  </element>
  <attlist>
    <name>tbody</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="cellhalign.att"/>
    <attributeGroupRef name="cellvalign.att"/>
  </attlist>
  <element>
    <name>tr</name>
    <oneOrMore>
      <choice>
        <elementRef>
          <name>th</name>
        </elementRef>
        <elementRef>
          <name>td</name>
        </elementRef>
      </choice>
    </oneOrMore>
  </element>
  <attlist>
    <name>tr</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="cellhalign.att"/>
    <attributeGroupRef name="cellvalign.att"/>
  </attlist>
  <element>
    <name>th</name>
    <zeroOrMore>
      <choice>
        <modelGroupRef name="p.pcd.mix"/>
        <modelGroupRef name="p.mix"/>
      </choice>
    </zeroOrMore>
  </element>
  <attlist>
    <name>th</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="thtd.att"/>
    <attributeGroupRef name="cellhalign.att"/>
    <attributeGroupRef name="cellvalign.att"/>
  </attlist>
  <element>
    <name>td</name>
    <zeroOrMore>
      <choice>
        <modelGroupRef name="p.pcd.mix"/>
        <modelGroupRef name="p.mix"/>
      </choice>
    </zeroOrMore>
  </element>
  <attlist>
    <name>td</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="thtd.att"/>
    <attributeGroupRef name="cellhalign.att"/>
    <attributeGroupRef name="cellvalign.att"/>
  </attlist>
  <comment> ............................................................... </comment>
  <comment> IDL structures for DOM specifications ......................... </comment>
  <comment> ............................................................... </comment>
  <comment> ............................................................... </comment>
  <comment> Specialized entities for classes .............................. </comment>
  <modelGroup name="idl-desc.class">
    <choice>
      <elementRef>
        <name>p</name>
      </elementRef>
      <elementRef>
        <name>note</name>
      </elementRef>
    </choice>
  </modelGroup>
  <modelGroup name="idl-tdef.class">
    <choice>
      <elementRef>
        <name>typedef</name>
      </elementRef>
      <elementRef>
        <name>constant</name>
      </elementRef>
      <elementRef>
        <name>exception</name>
      </elementRef>
      <elementRef>
        <name>reference</name>
      </elementRef>
      <elementRef>
        <name>group</name>
      </elementRef>
    </choice>
  </modelGroup>
  <modelGroup name="idl-mod.class">
    <choice>
      <elementRef>
        <name>module</name>
      </elementRef>
      <elementRef>
        <name>interface</name>
      </elementRef>
    </choice>
  </modelGroup>
  <modelGroup name="idl-struct.class">
    <choice>
      <elementRef>
        <name>struct</name>
      </elementRef>
      <elementRef>
        <name>enum</name>
      </elementRef>
      <elementRef>
        <name>sequence</name>
      </elementRef>
      <elementRef>
        <name>union</name>
      </elementRef>
      <elementRef>
        <name>typename</name>
      </elementRef>
    </choice>
  </modelGroup>
  <modelGroup name="idl-meth.class">
    <choice>
      <elementRef>
        <name>method</name>
      </elementRef>
      <elementRef>
        <name>attribute</name>
      </elementRef>
    </choice>
  </modelGroup>
  <comment> ............................................................... </comment>
  <comment> Specialized entities for mixtures ............................. </comment>
  <comment>    Quick reference to content model mixtures:

                        desc tdef mod struct meth
group                     x    x   x    x      x
definitions, module       x    x   x
interface                 x    x               x
typedef, case, component                x
</comment>
  <modelGroup name="idl-grp.mix">
    <choice>
      <modelGroupRef name="idl-desc.class"/>
      <modelGroupRef name="idl-tdef.class"/>
      <modelGroupRef name="idl-mod.class"/>
      <modelGroupRef name="idl-struct.class"/>
      <modelGroupRef name="idl-meth.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="idl-defn.mix">
    <choice>
      <modelGroupRef name="idl-desc.class"/>
      <modelGroupRef name="idl-tdef.class"/>
      <modelGroupRef name="idl-mod.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="idl-intfc.mix">
    <choice>
      <modelGroupRef name="idl-desc.class"/>
      <modelGroupRef name="idl-tdef.class"/>
      <modelGroupRef name="idl-meth.class"/>
    </choice>
  </modelGroup>
  <modelGroup name="idl-type.mix">
    <modelGroupRef name="idl-struct.class"/>
  </modelGroup>
  <comment> ............................................................... </comment>
  <comment> Specialized entities for common attributes .................... </comment>
  <comment>    name attribute:
        Provides a name.  Required. </comment>
  <attributeGroup name="idl-name.att">
    <attribute>
      <name>name</name>
      <cdata/>
      <required/>
    </attribute>
  </attributeGroup>
  <comment>    type attribute:
        Provides a type.  Required. </comment>
  <attributeGroup name="idl-type.att">
    <attribute>
      <name>type</name>
      <cdata/>
      <required/>
    </attribute>
  </attributeGroup>
  <comment> ............................................................... </comment>
  <comment> Common IDL element ............................................ </comment>
  <element>
    <name>descr</name>
    <zeroOrMore>
      <modelGroupRef name="obj.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>descr</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment> ............................................................... </comment>
  <comment> IDL definition elements ....................................... </comment>
  <comment>    definitions: Top-level element for definitions. </comment>
  <element>
    <name>definitions</name>
    <oneOrMore>
      <modelGroupRef name="idl-defn.mix"/>
    </oneOrMore>
  </element>
  <attlist>
    <name>definitions</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    group: Element used to group a set of definitions. </comment>
  <element>
    <name>group</name>
    <sequence>
      <elementRef>
        <name>descr</name>
      </elementRef>
      <zeroOrMore>
        <modelGroupRef name="idl-grp.mix"/>
      </zeroOrMore>
    </sequence>
  </element>
  <attlist>
    <name>group</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-name.att"/>
  </attlist>
  <comment>    interface: Definition of an interface. </comment>
  <element>
    <name>interface</name>
    <sequence>
      <elementRef>
        <name>descr</name>
      </elementRef>
      <zeroOrMore>
        <modelGroupRef name="idl-intfc.mix"/>
      </zeroOrMore>
    </sequence>
  </element>
  <attlist>
    <name>interface</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-name.att"/>
    <attribute>
      <name>inherits</name>
      <cdata/>
      <implied/>
    </attribute>
  </attlist>
  <comment>    module: Definition of a module. </comment>
  <element>
    <name>module</name>
    <sequence>
      <elementRef>
        <name>descr</name>
      </elementRef>
      <zeroOrMore>
        <modelGroupRef name="idl-defn.mix"/>
      </zeroOrMore>
    </sequence>
  </element>
  <attlist>
    <name>module</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-name.att"/>
  </attlist>
  <comment>    reference: Reference to some other declaration. </comment>
  <element>
    <name>reference</name>
    <sequence/>
  </element>
  <attlist>
    <name>reference</name>
    <attributeGroupRef name="common.att"/>
    <attribute>
      <name>declaration</name>
      <tokenized name="IDREF"/>
      <required/>
    </attribute>
  </attlist>
  <comment>    typedef: Definition of a named type. </comment>
  <element>
    <name>typedef</name>
    <sequence>
      <elementRef>
        <name>descr</name>
      </elementRef>
      <modelGroupRef name="idl-type.mix"/>
    </sequence>
  </element>
  <attlist>
    <name>typedef</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-name.att"/>
    <attribute>
      <name>array.size</name>
      <tokenized name="NMTOKEN"/>
      <implied/>
    </attribute>
  </attlist>
  <comment>    struct: Declaration of a struct type. </comment>
  <element>
    <name>struct</name>
    <sequence>
      <elementRef>
        <name>descr</name>
      </elementRef>
      <oneOrMore>
        <elementRef>
          <name>component</name>
        </elementRef>
      </oneOrMore>
    </sequence>
  </element>
  <attlist>
    <name>struct</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-name.att"/>
  </attlist>
  <comment>    component: Declaration of a structural member. </comment>
  <element>
    <name>component</name>
    <modelGroupRef name="idl-type.mix"/>
  </element>
  <attlist>
    <name>component</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-name.att"/>
  </attlist>
  <comment>    union: Declaration of a union type. </comment>
  <element>
    <name>union</name>
    <sequence>
      <elementRef>
        <name>descr</name>
      </elementRef>
      <oneOrMore>
        <elementRef>
          <name>case</name>
        </elementRef>
      </oneOrMore>
    </sequence>
  </element>
  <attlist>
    <name>union</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-name.att"/>
    <attribute>
      <name>switch.type</name>
      <cdata/>
      <required/>
    </attribute>
  </attlist>
  <element>
    <name>case</name>
    <sequence>
      <elementRef>
        <name>descr</name>
      </elementRef>
      <modelGroupRef name="idl-type.mix"/>
    </sequence>
  </element>
  <attlist>
    <name>case</name>
    <attributeGroupRef name="common.att"/>
    <attribute>
      <name>labels</name>
      <cdata/>
      <required/>
    </attribute>
  </attlist>
  <comment>    enum: Declaration of an enum type. </comment>
  <element>
    <name>enum</name>
    <sequence>
      <elementRef>
        <name>descr</name>
      </elementRef>
      <oneOrMore>
        <elementRef>
          <name>enumerator</name>
        </elementRef>
      </oneOrMore>
    </sequence>
  </element>
  <attlist>
    <name>enum</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-name.att"/>
  </attlist>
  <element>
    <name>enumerator</name>
    <elementRef>
      <name>descr</name>
    </elementRef>
  </element>
  <attlist>
    <name>enumerator</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-name.att"/>
  </attlist>
  <comment>    sequence: Declaration of a sequence type (not named). </comment>
  <element>
    <name>sequence</name>
    <zeroOrMore>
      <elementRef>
        <name>sequence</name>
      </elementRef>
    </zeroOrMore>
  </element>
  <attlist>
    <name>sequence</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-type.att"/>
    <attribute>
      <name>size</name>
      <tokenized name="NMTOKEN"/>
      <implied/>
    </attribute>
  </attlist>
  <comment>    constant: Declaration of a named constant. </comment>
  <element>
    <name>constant</name>
    <elementRef>
      <name>descr</name>
    </elementRef>
  </element>
  <attlist>
    <name>constant</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-name.att"/>
    <attributeGroupRef name="idl-type.att"/>
    <attribute>
      <name>value</name>
      <cdata/>
      <required/>
    </attribute>
  </attlist>
  <comment>    exception: Declaration of an exception. </comment>
  <element>
    <name>exception</name>
    <sequence>
      <elementRef>
        <name>descr</name>
      </elementRef>
      <zeroOrMore>
        <elementRef>
          <name>component</name>
        </elementRef>
      </zeroOrMore>
    </sequence>
  </element>
  <attlist>
    <name>exception</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-name.att"/>
  </attlist>
  <comment> component (defined under struct, above)</comment>
  <comment>    attribute: Declaration of an attribute (data member). </comment>
  <element>
    <name>attribute</name>
    <elementRef>
      <name>descr</name>
    </elementRef>
  </element>
  <attlist>
    <name>attribute</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-name.att"/>
    <attributeGroupRef name="idl-type.att"/>
    <attribute>
      <name>readonly</name>
      <tokenized>
        <enum>yes</enum>
        <enum>no</enum>
      </tokenized>
      <default>no</default>
    </attribute>
  </attlist>
  <comment>    method: Declaration of a method. </comment>
  <element>
    <name>method</name>
    <sequence>
      <elementRef>
        <name>descr</name>
      </elementRef>
      <elementRef>
        <name>parameters</name>
      </elementRef>
      <elementRef>
        <name>returns</name>
      </elementRef>
      <elementRef>
        <name>raises</name>
      </elementRef>
    </sequence>
  </element>
  <attlist>
    <name>method</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-name.att"/>
  </attlist>
  <element>
    <name>parameters</name>
    <zeroOrMore>
      <elementRef>
        <name>param</name>
      </elementRef>
    </zeroOrMore>
  </element>
  <attlist>
    <name>parameters</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>param</name>
    <elementRef>
      <name>descr</name>
    </elementRef>
  </element>
  <attlist>
    <name>param</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-name.att"/>
    <attributeGroupRef name="idl-type.att"/>
    <attribute>
      <name>attr</name>
      <tokenized>
        <enum>in</enum>
        <enum>out</enum>
        <enum>inout</enum>
      </tokenized>
      <default>inout</default>
    </attribute>
  </attlist>
  <element>
    <name>returns</name>
    <elementRef>
      <name>descr</name>
    </elementRef>
  </element>
  <attlist>
    <name>returns</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="idl-type.att"/>
  </attlist>
  <element>
    <name>raises</name>
    <zeroOrMore>
      <elementRef>
        <name>exception</name>
      </elementRef>
    </zeroOrMore>
  </element>
  <comment> exception (defined under constant, above)</comment>
  <element>
    <name>typename</name>
    <pcdata/>
  </element>
  <attlist>
    <name>typename</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment> ............................................................... </comment>
  <comment> Phrase-level elements ......................................... </comment>
  <comment> ............................................................... </comment>
  <comment>
#2000-03-07: maler: Added att and attval elements.
</comment>
  <comment>    att: Attribute name. </comment>
  <element>
    <name>att</name>
    <zeroOrMore>
      <modelGroupRef name="tech.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>att</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    attval: Attribute value. </comment>
  <element>
    <name>attval</name>
    <zeroOrMore>
      <modelGroupRef name="tech.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>attval</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    bibref: Reference to a bibliography list entry; should
        generate, in square brackets, &quot;key&quot; on bibl. </comment>
  <element>
    <name>bibref</name>
    <sequence/>
  </element>
  <comment>    ref attribute:
        A bibliography reference must link to the bibl element that
        describes the resource. </comment>
  <attlist>
    <name>bibref</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="ref-req.att"/>
  </attlist>
  <element>
    <name>code</name>
    <zeroOrMore>
      <modelGroupRef name="tech.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>code</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#1998-03-10: maler: Declared ednote and related elements.
#1999-07-02: maler: Changed edtext content from #PCDATA to %p.pcd.mix;.
</comment>
  <comment>    ednote: Editorial note for communication among editors. </comment>
  <element>
    <name>ednote</name>
    <sequence>
      <optional>
        <elementRef>
          <name>name</name>
        </elementRef>
      </optional>
      <optional>
        <elementRef>
          <name>date</name>
        </elementRef>
      </optional>
      <elementRef>
        <name>edtext</name>
      </elementRef>
    </sequence>
  </element>
  <attlist>
    <name>ednote</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>date</name>
    <pcdata/>
  </element>
  <attlist>
    <name>date</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>edtext</name>
    <zeroOrMore>
      <modelGroupRef name="p.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>edtext</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#2000-03-07: maler: Added el element.
</comment>
  <comment>    el: Element type name (GI). </comment>
  <element>
    <name>el</name>
    <zeroOrMore>
      <modelGroupRef name="tech.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>el</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#2000-03-07: maler: Expanded emph to %p.pcd.mix;.
</comment>
  <element>
    <name>emph</name>
    <zeroOrMore>
      <modelGroupRef name="p.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>emph</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    footnote: Both footnote content and call to footnote. </comment>
  <element>
    <name>footnote</name>
    <oneOrMore>
      <modelGroupRef name="obj.mix"/>
    </oneOrMore>
  </element>
  <attlist>
    <name>footnote</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#2000-03-07: maler: Added function and gave it content of
#                   %tech.pcd.mix; instead of XPath's #PCDATA.
</comment>
  <element>
    <name>function</name>
    <zeroOrMore>
      <modelGroupRef name="tech.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>function</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <element>
    <name>kw</name>
    <zeroOrMore>
      <modelGroupRef name="tech.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>kw</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#1999-07-02: maler: Added show/actuate attributes and default values.
</comment>
  <comment>    loc: Generic link to a Web resource, similar to HTML's A. </comment>
  <element>
    <name>loc</name>
    <pcdata/>
  </element>
  <comment>    href attribute:
        The purpose of a loc element is to function as a A-like
        hypertext link to a resource.  (Ideally, the content of loc
        will also mention the URI of the resource, so that readers of
        the printed version will be able to locate the resource.) E.g.:

&lt;loc href=&quot;http://www.my.com/doc.htm&quot;&gt;http://www.my.com/doc.htm&lt;/loc&gt;
        </comment>
  <attlist>
    <name>loc</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="simple-xlink.att"/>
    <attributeGroupRef name="href-req.att"/>
    <attributeGroupRef name="user-replace.att"/>
  </attlist>
  <comment>    nt: Mention of a nonterminal in text, along with a link to
        the production in the current document that defines it. </comment>
  <element>
    <name>nt</name>
    <pcdata/>
  </element>
  <comment>    def attribute:
        The nonterminal must link to the production that defines
        it. </comment>
  <attlist>
    <name>nt</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="def-req.att"/>
  </attlist>
  <comment>
#2000-03-07: maler: Declared phrase.
</comment>
  <comment>    phrase: &quot;Attribute hanger&quot; for small bits of (e.g.) differenced
        text in a paragraph or similar, when another element isn't handy.
        Beware that its content model may allow more nested elements than
        would normally be allowed in some contexts. </comment>
  <element>
    <name>phrase</name>
    <zeroOrMore>
      <modelGroupRef name="p.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>phrase</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#1998-03-10: maler: Declared quote.
</comment>
  <comment>    quote: Scare quotes and other purely presentational quotes. </comment>
  <element>
    <name>quote</name>
    <zeroOrMore>
      <modelGroupRef name="p.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>quote</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    specref: Reference to a div, olist item, prod, or issue
        in the current document; should generate italic &quot;[n.n],
        Section Title&quot; for div, &quot;n&quot; for numbered item, &quot;[n]&quot; for
        production, or &quot;Issue id&quot; for issue. </comment>
  <element>
    <name>specref</name>
    <sequence/>
  </element>
  <comment>    ref attribute:
        The purpose of a specref element is to link to a div, item
        in an olist, or production in the current spec. </comment>
  <attlist>
    <name>specref</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="ref-req.att"/>
  </attlist>
  <comment>
#2000-03-07: maler: Added sub and sup.
</comment>
  <comment>    sub: Subscript. </comment>
  <element>
    <name>sub</name>
    <pcdata/>
  </element>
  <attlist>
    <name>sub</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    sup: Superscript. </comment>
  <element>
    <name>sup</name>
    <pcdata/>
  </element>
  <attlist>
    <name>sup</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    term: The term in text that is being defined in text. </comment>
  <element>
    <name>term</name>
    <pcdata/>
  </element>
  <attlist>
    <name>term</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>    termdef: Definition of a term in text. </comment>
  <element>
    <name>termdef</name>
    <zeroOrMore>
      <choice>
        <modelGroupRef name="termdef.pcd.mix"/>
        <modelGroupRef name="termdef.mix"/>
      </choice>
    </zeroOrMore>
  </element>
  <comment>    ID attribute:
        A term definition must have an ID so that it can be linked
        to from termref elements. </comment>
  <comment>    term attribute:
        The canonical form of the term or phrase being defined must
        appear in this attribute, even if the term or phrase also
        appears in the element content in identical form (e.g., in
        the term element). </comment>
  <attlist>
    <name>termdef</name>
    <attributeGroupRef name="common-idreq.att"/>
    <attribute>
      <name>term</name>
      <cdata/>
      <required/>
    </attribute>
  </attlist>
  <comment>    termref: Mention of a term, along with a link to the
        definition in the current document. </comment>
  <element>
    <name>termref</name>
    <pcdata/>
  </element>
  <comment>    ref attribute:
        A term reference must link to the termdef element that
        defines the term. </comment>
  <attlist>
    <name>termref</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="def-req.att"/>
  </attlist>
  <comment>
#1999-07-02: maler: Added show/actuate attributes and default values.
</comment>
  <comment>    titleref: Citation of another document, which can also
        link to that document if it is a Web resource. </comment>
  <element>
    <name>titleref</name>
    <pcdata/>
  </element>
  <comment>    href attribute:
        A title reference can optionally function as a hypertext
        link to the resource with this title.  E.g.:

&lt;loc href=&quot;http://www.my.com/doc.htm&quot;&gt;http://www.my.com/doc.htm&lt;/loc&gt;
        </comment>
  <attlist>
    <name>titleref</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="simple-xlink.att"/>
    <attributeGroupRef name="href.att"/>
    <attributeGroupRef name="user-new.att"/>
  </attlist>
  <comment>
#2000-03-07: maler: Added var.
</comment>
  <comment>    var: String standing for a variable value that the user
        or system will supply.  For example: &quot;For each node
        &lt;var&gt;x&lt;/var&gt; in this node-set...&quot; </comment>
  <element>
    <name>var</name>
    <zeroOrMore>
      <modelGroupRef name="tech.pcd.mix"/>
    </zeroOrMore>
  </element>
  <attlist>
    <name>var</name>
    <attributeGroupRef name="common.att"/>
  </attlist>
  <comment>
#1999-07-02: maler: Added show/actuate attributes and default values.
</comment>
  <comment>    xnt: Mention of a nonterminal in text, along with a link to
        the production in another document that defines it. </comment>
  <element>
    <name>xnt</name>
    <pcdata/>
  </element>
  <comment>    href attribute:
        The nonterminal must hyperlink to a resource that serves
        to define it (e.g., a production in a related XML
        specification).  E.g.:

&lt;xnt href=&quot;http://www.w3.org/TR/spec.htm#prod3&quot;&gt;Name&lt;/xnt&gt;
        </comment>
  <attlist>
    <name>xnt</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="simple-xlink.att"/>
    <attributeGroupRef name="href-req.att"/>
    <attributeGroupRef name="user-new.att"/>
  </attlist>
  <comment>
#1997-12-29: maler: Declared xspecref.
#1999-07-02: maler: Added show/actuate attributes and default values.
</comment>
  <comment>    xspecref: Reference to a div, olist item, prod, or issue
        in a related specification document; should generate
        no special text. </comment>
  <element>
    <name>xspecref</name>
    <pcdata/>
  </element>
  <comment>    href attribute:
        The spec reference must hyperlink to the resource to
        cross-refer to (e.g., a section in a related XML
        specification).  E.g.:

&lt;xspecref href=&quot;http://www.w3.org/TR/spec.htm#sec2&quot;&gt;
the section on constraints&lt;/xspecref&gt;
        </comment>
  <attlist>
    <name>xspecref</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="simple-xlink.att"/>
    <attributeGroupRef name="href-req.att"/>
    <attributeGroupRef name="user-new.att"/>
  </attlist>
  <comment>
#1999-07-02: maler: Added show/actuate attributes and default values.
</comment>
  <comment>    termref: Mention of a term, along with a link to the
        definition in a related document. </comment>
  <element>
    <name>xtermref</name>
    <pcdata/>
  </element>
  <comment>    href attribute:
        The term reference must hyperlink to the resource that
        serves to define the term (e.g., a term definition in
        a related XML specification).  E.g.:

&lt;xtermref href=&quot;http://www.w3.org/TR/spec.htm#term5&quot;&gt;
entity
&lt;/xtermref&gt;
        </comment>
  <attlist>
    <name>xtermref</name>
    <attributeGroupRef name="common.att"/>
    <attributeGroupRef name="simple-xlink.att"/>
    <attributeGroupRef name="href-req.att"/>
    <attributeGroupRef name="user-new.att"/>
  </attlist>
  <comment> ............................................................... </comment>
  <comment> Unused elements for ADEPT ..................................... </comment>
  <comment> ............................................................... </comment>
  <comment>
#1997-09-30: maler: Added unusued elements.
#1997-10-14: maler: Fixed div to move nested div to the mixture.
#1998-05-14: maler: Added key-term, htable, and htbody.
#1998-11-30: maler: Added para, listitem, itemizedlist, and orderedlist.
</comment>
  <comment>    The following elements are purposely declared but never
        referenced.  Declaring them allows them to be pasted from
        an HTML document, an earlier version of an XMLspec document,
        or a DocBook document into a document using this DTD in ADEPT.
        The ATD Context Transformation mechanism will try to convert
        them to the appropriate element for this DTD.  While this
        conversion will not work for all fragments, it does allow many
        cases to work reasonably well. </comment>
  <element>
    <name>div</name>
    <sequence>
      <optional>
        <elementRef>
          <name>head</name>
        </elementRef>
      </optional>
      <zeroOrMore>
        <choice>
          <modelGroupRef name="div.mix"/>
          <elementRef>
            <name>ul</name>
          </elementRef>
          <elementRef>
            <name>ol</name>
          </elementRef>
          <elementRef>
            <name>h1</name>
          </elementRef>
          <elementRef>
            <name>h2</name>
          </elementRef>
          <elementRef>
            <name>h3</name>
          </elementRef>
          <elementRef>
            <name>h4</name>
          </elementRef>
          <elementRef>
            <name>h5</name>
          </elementRef>
          <elementRef>
            <name>h6</name>
          </elementRef>
          <elementRef>
            <name>div</name>
          </elementRef>
        </choice>
      </zeroOrMore>
    </sequence>
  </element>
  <element>
    <name>h1</name>
    <zeroOrMore>
      <choice>
        <modelGroupRef name="head.pcd.mix"/>
        <elementRef>
          <name>em</name>
        </elementRef>
        <elementRef>
          <name>a</name>
        </elementRef>
      </choice>
    </zeroOrMore>
  </element>
  <element>
    <name>h2</name>
    <zeroOrMore>
      <choice>
        <modelGroupRef name="head.pcd.mix"/>
        <elementRef>
          <name>em</name>
        </elementRef>
        <elementRef>
          <name>a</name>
        </elementRef>
      </choice>
    </zeroOrMore>
  </element>
  <element>
    <name>h3</name>
    <zeroOrMore>
      <choice>
        <modelGroupRef name="head.pcd.mix"/>
        <elementRef>
          <name>em</name>
        </elementRef>
        <elementRef>
          <name>a</name>
        </elementRef>
      </choice>
    </zeroOrMore>
  </element>
  <element>
    <name>h4</name>
    <zeroOrMore>
      <choice>
        <modelGroupRef name="head.pcd.mix"/>
        <elementRef>
          <name>em</name>
        </elementRef>
        <elementRef>
          <name>a</name>
        </elementRef>
      </choice>
    </zeroOrMore>
  </element>
  <element>
    <name>h5</name>
    <zeroOrMore>
      <choice>
        <modelGroupRef name="head.pcd.mix"/>
        <elementRef>
          <name>em</name>
        </elementRef>
        <elementRef>
          <name>a</name>
        </elementRef>
      </choice>
    </zeroOrMore>
  </element>
  <element>
    <name>h6</name>
    <zeroOrMore>
      <choice>
        <modelGroupRef name="head.pcd.mix"/>
        <elementRef>
          <name>em</name>
        </elementRef>
        <elementRef>
          <name>a</name>
        </elementRef>
      </choice>
    </zeroOrMore>
  </element>
  <element>
    <name>pre</name>
    <zeroOrMore>
      <choice>
        <modelGroupRef name="eg.pcd.mix"/>
        <elementRef>
          <name>em</name>
        </elementRef>
      </choice>
    </zeroOrMore>
  </element>
  <element>
    <name>ul</name>
    <zeroOrMore>
      <choice>
        <elementRef>
          <name>item</name>
        </elementRef>
        <elementRef>
          <name>li</name>
        </elementRef>
      </choice>
    </zeroOrMore>
  </element>
  <element>
    <name>ol</name>
    <zeroOrMore>
      <choice>
        <elementRef>
          <name>item</name>
        </elementRef>
        <elementRef>
          <name>li</name>
        </elementRef>
      </choice>
    </zeroOrMore>
  </element>
  <element>
    <name>li</name>
    <zeroOrMore>
      <choice>
        <pcdata/>
        <modelGroupRef name="obj.mix"/>
      </choice>
    </zeroOrMore>
  </element>
  <element>
    <name>em</name>
    <pcdata/>
  </element>
  <element>
    <name>a</name>
    <pcdata/>
  </element>
  <element>
    <name>key-term</name>
    <pcdata/>
  </element>
  <element>
    <name>htable</name>
    <sequence>
      <optional>
        <elementRef>
          <name>caption</name>
        </elementRef>
      </optional>
      <choice>
        <zeroOrMore>
          <elementRef>
            <name>col</name>
          </elementRef>
        </zeroOrMore>
        <zeroOrMore>
          <elementRef>
            <name>colgroup</name>
          </elementRef>
        </zeroOrMore>
      </choice>
      <optional>
        <elementRef>
          <name>thead</name>
        </elementRef>
      </optional>
      <optional>
        <elementRef>
          <name>tfoot</name>
        </elementRef>
      </optional>
      <oneOrMore>
        <elementRef>
          <name>tbody</name>
        </elementRef>
      </oneOrMore>
    </sequence>
  </element>
  <element>
    <name>htbody</name>
    <oneOrMore>
      <elementRef>
        <name>tr</name>
      </elementRef>
    </oneOrMore>
  </element>
  <element>
    <name>statusp</name>
    <zeroOrMore>
      <choice>
        <modelGroupRef name="p.pcd.mix"/>
        <modelGroupRef name="p.mix"/>
      </choice>
    </zeroOrMore>
  </element>
  <element>
    <name>itemizedlist</name>
    <zeroOrMore>
      <elementRef>
        <name>listitem</name>
      </elementRef>
    </zeroOrMore>
  </element>
  <element>
    <name>orderedlist</name>
    <zeroOrMore>
      <elementRef>
        <name>listitem</name>
      </elementRef>
    </zeroOrMore>
  </element>
  <element>
    <name>listitem</name>
    <zeroOrMore>
      <elementRef>
        <name>para</name>
      </elementRef>
    </zeroOrMore>
  </element>
  <element>
    <name>para</name>
    <pcdata/>
  </element>
  <comment> ............................................................... </comment>
  <comment> Change history ................................................ </comment>
  <comment> ............................................................... </comment>
  <comment>
#1997-08-18: maler
#- Did a major revision.
#1997-09-10: maler
#- Updated FPI.
#- Removed namekey element and put key attribute on name element.
#- Made statusp element and supporting entities.
#- Added slist element with sitem+ content.
#- Required head on scrap and added new bnf subelement.
#- Added an xnt element and allowed it and nt in regular text and rhs.
#- Removed the ntref element.
#- Added back the com element to the content of rhs.
#- Added a key attribute to bibl.
#- Removed the ident element.
#- Added a term element to be used inside termdef.
#- Added an xtermref element parallel to termref.
#- Beefed up DTD comments.
#1997-09-12: maler
#- Allowed term element in general text.
#- Changed bibref to EMPTY.
#- Added ref.class to termdef.pcd.mix.
#1997-09-14: maler
#- Changed main attribute of xtermref from def to href.
#- Added termdef.class to label contents.
#1997-09-30: maler
#- Added character entity module and added new entities.
#- Removed p from appearing directly in self; created %p.mix;.
#- Added inform-div (non-normative division) element.
#- Fixed xtermref comment to mention href, not ref.
#- Extended orglist model to allow optional affiliation.
#- Modified author to make affiliation optional.
#- Added %speclist.class; and %note.class; to %obj.mix; and %p.mix;.
#- Added %note.class; and %illus.class; to %termdef.pcd.mix;.
#- Added unused HTML elements.
#- Put empty system ID next to public ID in entity declarations.
#1997-10-14: maler
#- Fixed &quot;unused&quot; div content model to move nested div to mixture.
#1997-10-16: maler
#- Added SGML Open Exchange tables.
#1997-11-28: maler
#- Added support for prodgroup and its attributes.
#- Added support for HTML tables.
#- Added loc and bibref to content of com.
#- Added loc to general p content models.
#- Allowed p as alternative to statusp in status.
#- Added non-null system IDs to external parameter entity declarations.
#- (Modified the SGML Open table module to make it XML-compliant.)
#- (Modified the character entity module.)
#1997-12-29: maler
#- Moved #PCDATA occurrences to come before GIs in content models.
#- Removed use of the SGML Open table module.
#- Added xspecref element.
#- Ensured that all FPIs contain 4-digit year.
#- (Modified the character entity module.)
#1998-03-10: maler
#- Merged the character entity and table modules into the main file.
#- Added ldquo and rdquo entities.
#- Added common attributes to prodgroup.
#- Made the email element in header optional.
#- Removed reference to the SGML Open table model.
#- Added ednote element.
#- Added quote element.
#- Updated XLink usage to reflect 3 March 1998 WD.
#- Added &quot;local&quot; entities to the class entities for customization.
#- Parameterized several content models to allow for customization.
#1998-03-23: maler
#- Cleaned up some comments and removed some others.
#- Added xml:space semi-common attribute to eg and bnf elements.
#- Added show and embed attributes on all the uses of href.
#- Added %common.att; to all HTML table elements.
#- Added a real URI to the &quot;typical invocation&quot; comment.
#1998-05-14: maler
#- Fixed mdash, ldquo, and rdquo character entities.
#- Switched to the full HTML 4.0 table model.
#- Removed htable/htbody elements and replaced them with table/tbody.
#- Added issue element to %note.class; and declared it.
#- Allowed prevlocs and latestloc in either order.
#- Added key-term, htable, htbody, and statusp as unused elements.
#- Removed real statusp element in favor of plain p.
#1998-05-21: maler
#- Declared generic constraint and constraintnote elements.
#- Added constraintnote to %note.class;.
#- Added constraint to %eg.pcd.mix; and prod content model.
#1998-08-22: maler
#- Fixed %illus.class; to mention table instead of htable.
#- Added definitions to %illus.class; for DOM model.
#- Added DOM definitions element and its substructure.
#- Updated XLink usage in %href.att; to use xlink:form and #IMPLIED.
#- Added clarifying comments to href-using elements.
#1998-11-30: maler
#- Added new unused elements to support DocBook translation.
#- Updated maler phone numbers.
#1998-12-3: maler
#- Fixed character entities with respect to escaping of ampersands.
#- Added many more explanatory comments.
#1999-07-02: maler
#- Added %loc.class; to all PCD mixes that didn't already have it.
#- Removed unused %loc.pcd.mix;.
#- Made version in spec header optional.
#- Added three new attributes to spec.
#- Broadened content of edtext.
#- Added optional copyright element to header.
#- Reorganized XLink-related parameter entities; added xmlns:xlink.
#- Changed edtext content from #PCDATA to %p.pcd.mix;.
#- Added show/actuate atts and default values to all href elements.
#- Changed versioning scheme from 8-digit dates to version numbers.
#- Added w3c-doctype, other-doctype, status atts to spec element.
#- Added prodrecap element inside scrap.
#- Added headstyle attribute to scrap.
#2000-03-07: maler
#- Added proto element, its arg subelement, and the %argtypes; entity.
#- Added function, var, sub, sup, phrase, el, att, attval elements.
#- Expanded emph to %p.pcd.mix;.
#- Allowed status and abstract to appear in the opposite order.
#- Updated XLink usage to the latest WD, except for href and source.
#- Removed the xml:attributes attribute from graphic.
#- Added %local.graphic.att; to graphic.
#- Added common diff attribute.
#- Added div5 element.
#- Broadened content models of publoc, prevlocs, and latestloc.
#- Added head, source, resolution, and status attribute to issue.
#- Added cr, issues, and dispcmts to w3c-doctype attribute on spec.
#- Added example element.
</comment>
  <comment> ............................................................... </comment>
  <comment> End of XML specification DTD .................................. </comment>
  <comment> ............................................................... </comment>
</doctype>
