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  <title>An XHTML + MathML + SVG Profile</title>
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<h1 id="title">An
<abbr title="Extensible HyperText Markup Language">XHTML</abbr> +
<abbr title="Mathematical Markup Language">MathML</abbr> +
<abbr title="Scalable Vector Graphics">SVG</abbr> Profile</h1>

<h2 id="date"><abbr title="World Wide Web Consortium">W3C</abbr>
Working Draft 9 August 2002</h2>

<dl>
<dt id="thisVersion">This version:</dt>

<dd><p><a
href="http://www.w3.org/TR/2002/WD-XHTMLplusMathMLplusSVG-20020809/"
>http://www.w3.org/TR/2002/WD-XHTMLplusMathMLplusSVG-20020809</a></p>
<p>(<a type="text/html" title="HTML served as 'text/html'"
href="xhtml-math-svg.html">HTML</a>,
<a type="application/xhtml+xml" title="XHTML served as 'application/xhtml+xml'"
href="xhtml-math-svg.xhtml">XHTML</a>)</p></dd>

<dt id="latestVersion">Latest version:</dt>

<dd><a href="http://www.w3.org/TR/XHTMLplusMathMLplusSVG/"
>http://www.w3.org/TR/XHTMLplusMathMLplusSVG</a></dd>

<dt id="previousVersion">Previous version:</dt>

<dd><p><a
href="http://www.w3.org/TR/2002/WD-XHTMLplusMathMLplusSVG-20020430/"
>http://www.w3.org/TR/2002/WD-XHTMLplusMathMLplusSVG-20020430</a></p></dd>

<dt id="editor">Editor:</dt>

<dd><a lang="ja" href="mailto:mimasa@w3.org">石川 雅康
(<span class="familyname">Ishikawa</span> Masayasu)</a>, W3C</dd>
</dl>

<p id="alternate">This document is also available in these non-normative
formats:
<a type="application/zip" href="XHTMLplusMathMLplusSVG.zip">zip archive</a>
and <a type="application/octet-stream" href="XHTMLplusMathMLplusSVG.tgz">gzip'd
tar archive</a></p>

<p id="copyright" class="copyright"><a
href="http://www.w3.org/Consortium/Legal/ipr-notice-20000612#Copyright"
>Copyright</a> &#169;2002 <a href="http://www.w3.org/"><abbr
title="World Wide Web Consortium">W3C</abbr></a><sup>&#174;</sup> (<a
href="http://www.lcs.mit.edu/"><abbr
title="Massachusetts Institute of Technology">MIT</abbr></a>, <a
href="http://www.inria.fr/"><acronym lang="fr"
title="Institut National de Recherche en Informatique et Automatique"
>INRIA</acronym></a>, <a href="http://www.keio.ac.jp/">Keio</a>),
All Rights Reserved. W3C <a
href="http://www.w3.org/Consortium/Legal/ipr-notice-20000612#Legal_Disclaimer"
>liability</a>, <a
href="http://www.w3.org/Consortium/Legal/ipr-notice-20000612#W3C_Trademarks"
>trademark</a>, <a
href="http://www.w3.org/Consortium/Legal/copyright-documents-19990405">document
use</a> and <a
href="http://www.w3.org/Consortium/Legal/copyright-software-19980720">software
licensing</a> rules apply.</p>
</div>

<hr>


<h2 id="abstract">Abstract</h2>

<p>An XHTML+MathML+SVG profile is a profile that combines
XHTML 1.1 [<a class="normref" href="#ref-xhtml11">XHTML11</a>], MathML 2.0
[<a class="normref" href="#ref-mathml2">MathML2</a>] and SVG 1.1
[<a class="normref" href="#ref-svg11">SVG11</a>] together.  This profile
enables mixing XHTML, MathML and SVG in the same document using <abbr
title="Extensible Markup Language">XML</abbr> namespaces
[<a class="normref" href="#ref-xmlns">XMLNS</a>] mechanism, while allowing
validation of such a mixed-namespace document. An XHTML 1.1 + MathML 2.0 +
SVG 1.1 <abbr title="Document Type Definition">DTD</abbr> driver is provided.
An XHTML version of this document is conforming to this DTD.</p>


<h2 id="status">Status of This Document</h2>

<p><em>This section describes the status of this document at the time of its
publication. Other documents may supersede this document. The latest
status of this document series is maintained at the W3C.</em></p>

<p>This document is the second public Working Draft of an XHTML+MathML+SVG
profile for review by W3C Members and other interested parties.
This document <em>does not</em> define the normative
profile of XHTML + MathML + SVG.  This is <em>a</em> possible profile.
Publication of this Working Draft by W3C indicates no endorsement by W3C or
the W3C Team, or any W3C Members.
It is an early draft document and may be updated, replaced or made obsolete
by other documents at any time. It is inappropriate to use W3C Working
Drafts as reference material or to cite them as other than "work in
progress".</p>

<p>This document has been produced jointly by the
<a href="http://www.w3.org/MarkUp/Group/">W3C
<abbr title="HyperText Markup Language">HTML</abbr> Working Group</a>
<em class="member">(<a href="http://cgi.w3.org/MemberAccess/">members
only</a>)</em> and the <a href="http://www.w3.org/Graphics/SVG/Group/">SVG
Working Group</a> <em class="member">(<a
href="http://cgi.w3.org/MemberAccess/">members only</a>)</em> as part of
the <a href="http://www.w3.org/MarkUp/Activity">HTML Activity</a>
and the <a href="http://www.w3.org/Graphics/Activity">Graphics Activity</a>
within the <a href="http://www.w3.org/DF/">Document Formats Domain</a>.
A <a href="http://www.w3.org/TR/">list of current W3C Recommendations</a>
and other technical documents can be found at http://www.w3.org/TR.</p>

<p>At the time of publication, the Working Groups believed there were
zero patent disclosures relevant to this specification. A current list
of patent disclosures relevant to this specification may be found on
the patent disclosure pages on
<a href="http://www.w3.org/2002/07/HTML-IPR">XHTML</a>,
<a href="http://www.w3.org/Math/Disclosures">MathML</a> and
<a href="http://www.w3.org/Graphics/SVG/Disclosures">SVG</a>.</p>

<p>Comments on this document may be sent to
<a href="mailto:www-html-editor@w3.org">www-html-editor@w3.org</a>
(<a href="http://lists.w3.org/Archives/Public/www-html-editor/">archive</a>).
Public discussion on this document may take place on the public mailing lists
<a href="mailto:www-html@w3.org">www-html@w3.org</a>
(<a href="http://lists.w3.org/Archives/Public/www-html/">archive</a>) or
<a href="mailto:www-svg@w3.org">www-svg@w3.org</a>
(<a href="http://lists.w3.org/Archives/Public/www-svg/">archive</a>).</p>


<div class="toc">
<h2 id="contents">Table of Contents</h2>

<ul class="toc">
  <li class="informative">1.&#160;&#160;<a href="#intro">Introduction</a></li>
  <li class="normative">2.&#160;&#160;<a href="#dtd">XHTML 1.1 + MathML 2.0 +
    SVG 1.1 DTD</a>
  <ul>
    <li>2.1.&#160;&#160;<a href="#driver">XHTML 1.1 + MathML 2.0 + SVG 1.1
    DTD Driver</a></li>
  </ul></li>
  <li class="informative">3.&#160;&#160;<a href="#howto">How to use
    XHTML 1.1 + MathML 2.0 + SVG 1.1 DTD</a>
  <ul>
    <li>3.1.&#160;&#160;<a href="#howto-xhtml">XHTML as the Host
      Language</a></li>
    <li>3.2.&#160;&#160;<a href="#howto-svg">SVG as the Host Language</a></li>
    <li>3.3.&#160;&#160;<a href="#howto-math">Using MathML with
      Universal MathML stylesheet</a></li>
  </ul></li>
  <li class="informative">4.&#160;&#160;<a href="#profiles">How to define
    new profiles from XHTML 1.1 + MathML 2.0 + SVG 1.1 DTD</a></li>
  <li class="informative">5.&#160;&#160;<a href="#bugs">Known
    limitations</a></li>
  <li><a href="#ref">References</a>
  <ul>
    <li class="normative"><a href="#normref">Normative references</a></li>
    <li class="informative"><a href="#informref">Informative references</a></li>
  </ul></li>
  <li class="informative"><a href="#changes">Changes from previous
    Working Draft</a></li>
  <li class="informative"><a href="#acknowledgments">Acknowledgments</a></li>
</ul>
</div>

<hr>


<div class="informative">
<h2><a id="intro">1.&#160;&#160;Introduction</a></h2>

<p><em>This section is informative.</em></p>

<p>An XHTML+MathML+SVG profile integrates XHTML 1.1
[<a class="normref" href="#ref-xhtml11">XHTML11</a>], MathML 2.0
[<a class="normref" href="#ref-mathml2">MathML2</a>] and SVG 1.1
[<a class="normref" href="#ref-svg11">SVG11</a>] together, using
the XHTML Modularization Framework [<a class="normref"
href="#ref-xhtmlmod">XHTMLMOD</a>].
This profile enables mixing XHTML, MathML and SVG in a same document
using XML namespaces [<a class="normref" href="#ref-xmlns">XMLNS</a>]
mechanism, while allowing validation of such a mixed-namespace document.
An XHTML 1.1 + MathML 2.0 + SVG 1.1 DTD driver is provided in
<a href="#driver">section 2.1</a>.
The possibility of combining those modules written in XML Schema
[<a class="informref" href="#ref-xmlschema">XMLSchema</a>] might be explored
when XML Schemas for XHTML [<a class="informref"
href="#ref-xhtmlmodschema">XHTMLMODSchema</a>] and others become available
and mature.</p>

<p>This DTD driver can primarily be used for an XHTML document
that contains MathML and SVG fragments, but it can also be used
for an SVG document that contains XHTML and MathML fragments.
An SVG fragment inside an XHTML document can contain another
XHTML or MathML fragments, and that XHTML fragment can again
contain another MathML or SVG fragments.  There's no restriction on
nesting levels.</p>

<p>Inside XHTML, MathML and SVG fragments are allowed basically anywhere inside
the document body. Inside SVG, XHTML and MathML may be embedded through
the <code class="element">foreignObject</code> element (<cite>SVG 1.1</cite>
[<a class="normref" href="#ref-svg11">SVG11</a>], section 23.3).
A <a href="sample.xhtml" type="application/xhtml+xml">sample
document</a> (<em>MathML and SVG-enabled XHTML browsers only</em>)
shows features in XHTML 1.1 (ruby) and simple MathML and
SVG examples, and a mixture of them using
<code class="element">foreignObject</code>, in the same document.
On MathML and SVG-enabled XHTML browsers, mixed sample would be rendered
like this:</p>

<p id="mixed-sample" class="figure"><img src="mixed-sample.png"
width="600" height="750" alt="Mixed XHTML+MathML+SVG sample"
longdesc="sample.xhtml#mixed"></p>

<p>This DTD driver can also be used as a basis for defining other
profiles that combine some or all of XHTML, MathML and SVG.
How to define new profiles using this DTD driver is explained in
<a href="#profiles">section 4</a>.</p>
</div>


<div class="normative">
<h2 id="dtd">2.&#160;&#160;XHTML 1.1 + MathML 2.0 + SVG 1.1
Document Type Definition</h2>

<p><em>This section is normative.</em></p>

<p>The XHTML 1.1 + MathML 2.0 + SVG 1.1 DTD driver is available as follows:</p>

<dl>
<dt id="thisVersionDTD">URI for this version of the DTD:</dt>
<dd><a type="application/xml-dtd"
href="http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg-20020809.dtd"
>http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg-20020809.dtd</a></dd>

<dt id="latestVersionDTD">URI for the latest version of the DTD:</dt>
<dd><a type="application/xml-dtd"
href="http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd"
>http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd</a></dd>
</dl>

<p>"This version" of the DTD will be kept as is, while the "latest version"
of the DTD will evolve over time, e.g. it might incorporate errata and
add new features later.  Users of this DTD driver should be aware of this
difference.</p>

<p>Note that each referenced DTD modules might also evolve over time.
Non-normative "snapshot" of all DTD modules at the time of publication
as a flattened DTD is available as follows:</p>

<dl>
<dt id="thisVersionDTD-flat">URI for this version of the flattened DTD:</dt>
<dd><a type="application/xml-dtd"
href="http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg-flat-20020809.dtd"
>http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg-flat-20020809.dtd</a></dd>

<dt id="latestVersionDTD-flat">URI for the latest version of
the flattened DTD:</dt>
<dd><a type="application/xml-dtd"
href="http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg-flat.dtd"
>http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg-flat.dtd</a></dd>
</dl>

<p>The "latest version" of the flattened DTD will be kept up-to-date, too.</p>

<h3 id="driver">2.1.&#160;&#160;XHTML 1.1 + MathML 2.0 + SVG 1.1 DTD Driver</h3>

<p>This section contains the driver for an XHTML 1.1 + MathML 2.0 + SVG 1.1
profile implementation as an XML DTD. It relies upon XHTML module
implementations defined in <cite>Modularization of XHTML</cite>
[<a class="normref" href="#ref-xhtmlmod">XHTMLMOD</a>] and in <cite>Ruby
Annotation</cite> [<a class="normref" href="#ref-ruby">Ruby</a>], the XHTML
1.1 DTD implementation defined in <cite>XHTML 1.1</cite> [<a class="normref"
href="#ref-xhtml11">XHTML11</a>], MathML DTD module implementations defined in
<cite>MathML 2.0</cite> [<a class="normref" href="#ref-mathml2">MathML2</a>],
and SVG DTD module implementations defined in <cite>SVG 1.1</cite>
[<a class="normref" href="#ref-svg11">SVG11</a>].</p>

<pre id="xhtml-math-svg.dtd" class="dtd"
>&lt;!-- ....................................................................... --&gt;
&lt;!-- XHTML 1.1 plus MathML 2.0 plus SVG 1.1 DTD  ........................... --&gt;
&lt;!-- URI: <a type="application/xml-dtd"
href="http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd"
>http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd</a>
--&gt;

&lt;!-- XHTML 1.1 plus MathML 2.0 plus SVG 1.1 DTD

     This is a prototype extension of XHTML 1.1 incorporating MathML 2.0
     and SVG 1.1.

     Copyright 2002 World Wide Web Consortium
        (Massachusetts Institute of Technology, Institut National de
         Recherche en Informatique et en Automatique, Keio University).
         All Rights Reserved.

     Permission to use, copy, modify and distribute this DTD and its
     accompanying documentation for any purpose and without fee is hereby
     granted in perpetuity, provided that the above copyright notice and
     this paragraph appear in all copies.  The copyright holders make no
     representation about the suitability of the DTD for any purpose.

     It is provided "as is" without expressed or implied warranty.

        Editors:    Murray M. Altheim &lt;altheim@eng.sun.com&gt; (XHTML modules)
                    David Carlisle &lt;davidc@nag.co.uk&gt; (MathML modules)
                    Jun Fujisawa &lt;fujisawa.jun@canon.co.jp&gt; (SVG modules)
                    Masayasu Ishikawa &lt;mimasa@w3.org&gt; (DTD driver)
        Revision:
          &#36;Id: xhtml-math-svg.dtd,v 1.26 2002/08/08 12:33:40 mimasa Exp &#36;

--&gt;
&lt;!-- This is the driver for an XHTML 1.1 plus MathML 2.0 plus SVG 1.1 DTD.
--&gt;

&lt;!-- Switches to include/ignore each vocabulary.
--&gt;
&lt;!ENTITY <a id="pe-XHTML.module" class="entity">% XHTML.module</a>  "INCLUDE" &gt;
&lt;!ENTITY <a id="pe-MATHML.module" class="entity">% MATHML.module</a> "INCLUDE" &gt;
&lt;!ENTITY <a id="pe-SVG.module" class="entity">% SVG.module</a>    "INCLUDE" &gt;

&lt;![%XHTML.module;[
&lt;!ENTITY <a id="pe-XHTML.version" class="entity">% XHTML.version</a>
         "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" &gt;
]]&gt;

&lt;!-- Switches to enable subsets.
--&gt;
&lt;!ENTITY <a id="pe-XHTML.Basic.module" class="entity">% XHTML.Basic.module</a> "IGNORE" &gt;
&lt;!ENTITY <a id="pe-SVG.Basic.module" class="entity">% SVG.Basic.module</a>   "IGNORE" &gt;
&lt;!ENTITY <a id="pe-SVG.Tiny.module" class="entity">% SVG.Tiny.module</a>    "IGNORE" &gt;

&lt;!-- Use the following entities to identify the namespaces:
--&gt;
&lt;!ENTITY <a id="pe-XHTML.xmlns" class="entity">% XHTML.xmlns</a>       "http://www.w3.org/1999/xhtml" &gt;
&lt;!ENTITY <a id="pe-MATHML.xmlns" class="entity">% MATHML.xmlns</a>      "http://www.w3.org/1998/Math/MathML" &gt;
&lt;!ENTITY <a id="pe-MATHML.pref.xmlns" class="entity">% MATHML.pref.xmlns</a> "http://www.w3.org/2002/Math/preference" &gt;
&lt;!ENTITY <a id="pe-SVG.xmlns" class="entity">% SVG.xmlns</a>         "http://www.w3.org/2000/svg" &gt;
&lt;!ENTITY <a id="pe-XLINK.xmlns" class="entity">% XLINK.xmlns</a>       "http://www.w3.org/1999/xlink" &gt;

&lt;!-- Declare base URIs for the relevant DTD modules.
--&gt;
&lt;![%XHTML.module;[
&lt;!ENTITY <a id="pe-XHTML.sysid.base" class="entity">% XHTML.sysid.base</a>
         "http://www.w3.org/TR/xhtml-modularization/DTD/" &gt;
]]&gt;
&lt;![%MATHML.module;[
&lt;!ENTITY <a id="pe-MATHML.sysid.base" class="entity">% MATHML.sysid.base</a>
         "http://www.w3.org/Math/DTD/mathml2/" &gt;
]]&gt;
&lt;![%SVG.module;[
&lt;!ENTITY <a id="pe-SVG.sysid.base" class="entity">% SVG.sysid.base</a>
         "http://www.w3.org/Graphics/SVG/1.1/DTD/" &gt;
]]&gt;

&lt;!-- Declare system identifiers for the relevant DTD modules.
--&gt;
&lt;![%XHTML.module;[
&lt;![%XHTML.Basic.module;[
&lt;!ENTITY % XHTML.dtd.fpi
         "-//W3C//DTD XHTML Basic 1.0//EN" &gt;
&lt;!ENTITY % XHTML.dtd.sysid
         "http://www.w3.org/TR/xhtml-basic/xhtml-basic10.dtd" &gt;
]]&gt;
&lt;!ENTITY <a id="pe-XHTML.dtd.fpi" class="entity">% XHTML.dtd.fpi</a>
         "-//W3C//DTD XHTML 1.1//EN" &gt;
&lt;!ENTITY <a id="pe-XHTML.dtd.sysid" class="entity">% XHTML.dtd.sysid</a>
         "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd" &gt;
]]&gt;
&lt;![%MATHML.module;[
&lt;!ENTITY <a id="pe-MATHML.dtd.sysid" class="entity">% MATHML.dtd.sysid</a>
         "%MATHML.sysid.base;mathml2.dtd" &gt;
&lt;!ENTITY <a id="pe-MATHML.qname.sysid" class="entity">% MATHML.qname.sysid</a>
         "%MATHML.sysid.base;mathml2-qname-1.mod" &gt;
]]&gt;
&lt;![%SVG.module;[
&lt;![%SVG.Tiny.module;[
&lt;!ENTITY % SVG.dtd.fpi
         "-//W3C//DTD SVG 1.1 Tiny//EN" &gt;
&lt;!ENTITY % SVG.dtd.sysid
         "%SVG.sysid.base;svg11-tiny.dtd" &gt;
]]&gt;
&lt;![%SVG.Basic.module;[
&lt;!ENTITY % SVG.dtd.fpi
         "-//W3C//DTD SVG 1.1 Basic//EN" &gt;
&lt;!ENTITY % SVG.dtd.sysid
         "%SVG.sysid.base;svg11-basic.dtd" &gt;
]]&gt;
&lt;!ENTITY <a id="pe-SVG.dtd.fpi" class="entity">% SVG.dtd.fpi</a>
         "-//W3C//DTD SVG 1.1//EN" &gt;
&lt;!ENTITY <a id="pe-SVG.dtd.sysid" class="entity">% SVG.dtd.sysid</a>
         "%SVG.sysid.base;svg11.dtd" &gt;
]]&gt;

&lt;!-- See the XHTML / MathML / SVG Qualified Names modules for information
     on the use of namespace prefixes in the DTD.  Default values are
     as follows:

       &lt;!ENTITY % NS.prefixed "IGNORE" &gt;
       &lt;!ENTITY % XHTML.prefixed "%NS.prefixed;" &gt;
       &lt;!ENTITY % XHTML.prefix  "" &gt;
       &lt;!ENTITY % MATHML.prefixed "%NS.prefixed;" &gt;
       &lt;!ENTITY % MATHML.prefix   "m" &gt;
       &lt;!ENTITY % MATHML.pref.prefixed "IGNORE" &gt;
       &lt;!ENTITY % MATHML.pref.prefix "pref" &gt;
       &lt;!ENTITY % SVG.prefixed "%NS.prefixed;" &gt;
       &lt;!ENTITY % SVG.prefix "" &gt;
       &lt;!ENTITY % XLINK.prefix "xlink" &gt;

     In this DTD driver, XHTML and MathML are not prefixed, and SVG is
     prefixed by default.  It can be changed by redeclaring the above
     parameter entities.
--&gt;
&lt;!ENTITY <a id="pe-XHTML.prefixed" class="entity">% XHTML.prefixed</a>       "IGNORE" &gt;
&lt;!ENTITY <a id="pe-MATHML.prefixed" class="entity">% MATHML.prefixed</a>      "IGNORE" &gt;
&lt;!ENTITY <a id="pe-MATHML.prefix" class="entity">% MATHML.prefix</a>        "m" &gt;
&lt;!ENTITY <a id="pe-MATHML.pref.prefixed" class="entity">% MATHML.pref.prefixed</a> "IGNORE" &gt;
&lt;!ENTITY <a id="pe-MATHML.pref.prefix" class="entity">% MATHML.pref.prefix</a>   "pref" &gt;
&lt;!ENTITY <a id="pe-SVG.prefixed" class="entity">% SVG.prefixed</a>         "INCLUDE" &gt;
&lt;!ENTITY <a id="pe-SVG.prefix" class="entity">% SVG.prefix</a>           "svg" &gt;
&lt;!ENTITY <a id="pe-XLINK.prefix" class="entity">% XLINK.prefix</a>         "xlink" &gt;

&lt;!-- a URI reference, see [URI] --&gt;
&lt;!ENTITY <a id="pe-URI.datatype" class="entity">% URI.datatype</a> "CDATA" &gt;

&lt;!-- Declare a parameter entity %XLINK.xmlns.attrib; containing
     the XML Namespace declarations for XLink.
--&gt;
&lt;!ENTITY <a id="pe-XLINK.xmlns.attrib" class="entity">% XLINK.xmlns.attrib</a>
    "xmlns:%XLINK.prefix; %URI.datatype; #FIXED '%XLINK.xmlns;'"
&gt;

&lt;!-- Allow universal MathML stylesheet-related declarations.
     When it is used, it must always be prefixed.
--&gt;
&lt;![%MATHML.module;[
&lt;![%MATHML.pref.prefixed;[
&lt;!ENTITY <a id="pe-MATHML.pref.renderer.extra" class="entity">% MATHML.pref.renderer.extra</a> ""&gt;
&lt;!ENTITY <a id="pe-MATHML.pref.renderer" class="entity">% MATHML.pref.renderer</a>
    "css | mathplayer-dl | mathplayer | techexplorer-plugin | techexplorer"&gt;
&lt;!ENTITY <a id="pe-MATHML.pref.xmlns.attrib" class="entity">% MATHML.pref.xmlns.attrib</a>
    "xmlns:%MATHML.pref.prefix; %URI.datatype; #FIXED '%MATHML.pref.xmlns;'
     %MATHML.pref.prefix;:renderer
     ( %MATHML.pref.renderer; %MATHML.pref.renderer.extra; ) #IMPLIED"
&gt;
]]&gt;
]]&gt;
&lt;!ENTITY % MATHML.pref.xmlns.attrib "" &gt;

&lt;!-- The parameter entities %SVG.xmlns.extra.attrib; and
     %XHTML.xmlns.extra.attrib; may be redeclared to contain
     any foreign namespace declarations for namespaces embedded
     in XHTML+MathML+SVG. The default value is an empty string.
--&gt;
&lt;!ENTITY <a id="pe-SVG.xmlns.extra.attrib" class="entity">% SVG.xmlns.extra.attrib</a> "" &gt;
&lt;!ENTITY <a id="pe-XHTML.xmlns.extra.attrib" class="entity">% XHTML.xmlns.extra.attrib</a> "" &gt;

&lt;!-- Declare parameter entities to define XML Namespace declarations
     for SVG, XHTML and MathML.
--&gt;
&lt;![%SVG.module;[
&lt;![%SVG.prefixed;[
&lt;!ENTITY <a id="pe-SVG.xmlns.decl.attrib" class="entity">% SVG.xmlns.decl.attrib</a>
    "xmlns:%SVG.prefix; %URI.datatype; #FIXED '%SVG.xmlns;'"
&gt;
]]&gt;
&lt;!ENTITY % SVG.xmlns.decl.attrib
    "xmlns %URI.datatype; #FIXED '%SVG.xmlns;'"
&gt;
]]&gt;
&lt;!ENTITY % SVG.xmlns.decl.attrib "" &gt;

&lt;![%XHTML.module;[
&lt;![%XHTML.prefixed;[
&lt;!ENTITY % XHTML.xmlns.decl.attrib
    "xmlns:%XHTML.prefix; %URI.datatype; #FIXED '%XHTML.xmlns;'"
&gt;
]]&gt;
&lt;!ENTITY <a id="pe-XHTML.xmlns.decl.attrib" class="entity">% XHTML.xmlns.decl.attrib</a>
    "xmlns %URI.datatype; #FIXED '%XHTML.xmlns;'"
&gt;
]]&gt;
&lt;!ENTITY % XHTML.xmlns.decl.attrib "" &gt;

&lt;![%MATHML.module;[
&lt;![%MATHML.prefixed;[
&lt;!ENTITY % MATHML.xmlns.decl.attrib
    "xmlns:%MATHML.prefix; %URI.datatype; #FIXED '%MATHML.xmlns;'"
&gt;
]]&gt;
&lt;!ENTITY <a id="pe-MATHML.xmlns.decl.attrib" class="entity">% MATHML.xmlns.decl.attrib</a>
    "xmlns %URI.datatype; #FIXED '%MATHML.xmlns;'"
&gt;
]]&gt;
&lt;!ENTITY % MATHML.xmlns.decl.attrib "" &gt;

&lt;!-- Declare common case for %NS.decl.attrib;.
--&gt;
&lt;!ENTITY <a id="pe-NS.common.decl.attrib" class="entity">% NS.common.decl.attrib</a>
    "%SVG.xmlns.decl.attrib;
     %XHTML.xmlns.decl.attrib;
     %MATHML.xmlns.decl.attrib;
     %XLINK.xmlns.attrib;
     %MATHML.pref.xmlns.attrib;
     %SVG.xmlns.extra.attrib;
     %XHTML.xmlns.extra.attrib;"
&gt;

&lt;!-- Redeclare the parameter entity %NS.decl.attrib; containing
     all XML Namespace declarations used in the DTD, its form
     dependent on whether prefixing is active.
--&gt;
&lt;![%SVG.prefixed;[
&lt;![%XHTML.prefixed;[
&lt;!-- SVG and XHTML are prefixed, MathML is either prefixed or not prefixed.
--&gt;
&lt;!ENTITY % NS.decl.attrib
    "%NS.common.decl.attrib;"
&gt;
]]&gt;
&lt;![%MATHML.prefixed;[
&lt;!-- SVG and MathML are prefixed, XHTML is not prefixed.
--&gt;
&lt;!ENTITY % NS.decl.attrib
    "%NS.common.decl.attrib;"
&gt;
]]&gt;
&lt;!-- SVG is prefixed, XHTML and MathML are not prefixed.
     MathML namespace must always be specified on the math element.
--&gt;
&lt;!ENTITY <a id="pe-NS.decl.attrib" class="entity">% NS.decl.attrib</a>
    "%SVG.xmlns.decl.attrib;
     %XHTML.xmlns.decl.attrib;
     %XLINK.xmlns.attrib;
     %MATHML.pref.xmlns.attrib;
     %SVG.xmlns.extra.attrib;
     %XHTML.xmlns.extra.attrib;"
&gt;
]]&gt;
&lt;![%XHTML.prefixed;[
&lt;![%MATHML.prefixed;[
&lt;!-- SVG is not prefixed, XHTML and MathML are prefixed.
--&gt;
&lt;!ENTITY % NS.decl.attrib
    "%NS.common.decl.attrib;"
&gt;
]]&gt;
&lt;!-- SVG and MathML are not prefixed, which is not allowed.
--&gt;
&lt;!ENTITY % NS.decl.attrib "" &gt;
]]&gt;
&lt;!-- SVG, MathML and XHTML are all not prefixed, which is not allowed.
--&gt;
&lt;!ENTITY % NS.decl.attrib "" &gt;

&lt;!-- Redeclare parameter entities %SVG.xmlns.attrib; and
     %XHTML.xmlns.attrib; containing all XML namespace declarations
     used by XHTML+MathML+SVG, including a default xmlns declaration
     when prefixing is inactive.
--&gt;
&lt;![%SVG.module;[
&lt;!ENTITY <a id="pe-SVG.xmlns.attrib" class="entity">% SVG.xmlns.attrib</a>
    "%NS.decl.attrib;"
&gt;
]]&gt;

&lt;![%XHTML.module;[
&lt;!ENTITY <a id="pe-XHTML.xmlns.attrib" class="entity">% XHTML.xmlns.attrib</a>
    "%NS.decl.attrib;"
&gt;
]]&gt;

&lt;!-- Redeclare the parameter entity %MATHML.xmlns.extra.attrib;
     containing XLink and MathML preferences namespace declarations
     allowed on MathML elements.
--&gt;
&lt;![%MATHML.module;[
&lt;!ENTITY <a id="pe-MATHML.xmlns.extra.attrib" class="entity">% MATHML.xmlns.extra.attrib</a>
    "%XLINK.xmlns.attrib;
     %MATHML.pref.xmlns.attrib;"
&gt;
]]&gt;

&lt;!-- Framework Redeclaration placeholders  ....................... --&gt;

&lt;![%XHTML.module;[
&lt;!ENTITY <a id="pe-XHTML.redecl.module" class="entity">% XHTML.redecl.module</a> "INCLUDE" &gt;
&lt;![%XHTML.redecl.module;[
&lt;!-- Pre-Framework Redeclaration placeholder  .................... --&gt;
&lt;!ENTITY <a id="pe-xhtml-prefw-redecl.mod" class="entity">% xhtml-prefw-redecl.mod</a> "" &gt;

&lt;!-- Post-Framework Redeclaration placeholder  ................... --&gt;
&lt;!ENTITY <a id="pe-xhtml-postfw-redecl.mod" class="entity">% xhtml-postfw-redecl.mod</a> "" &gt;
]]&gt;
]]&gt;

&lt;![%SVG.module;[
&lt;!ENTITY <a id="pe-SVG.redecl.module" class="entity">% SVG.redecl.module</a> "INCLUDE" &gt;
&lt;![%SVG.redecl.module;[
&lt;!-- Pre-Framework Redeclaration placeholder ..................... --&gt;
&lt;!ENTITY <a id="pe-svg-prefw-redecl.mod" class="entity">% svg-prefw-redecl.mod</a> "" &gt;

&lt;!-- Post-Framework Redeclaration placeholder .................... --&gt;
&lt;!ENTITY <a id="pe-svg-postfw-redecl.mod" class="entity">% svg-postfw-redecl.mod</a> "" &gt;
]]&gt;
]]&gt;

&lt;!-- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: --&gt;

&lt;!-- Declare MathML Qualified Names module as an extension of
     XHTML's Qualified Names module.
--&gt;
&lt;![%MATHML.module;[
&lt;!ENTITY <a id="pe-xhtml-qname-extra.decl" class="entity">% xhtml-qname-extra.decl</a>
    'PUBLIC "-//W3C//ENTITIES MathML 2.0 Qualified Names 1.0//EN"
            "%MATHML.qname.sysid;"'
&gt;
&lt;!ENTITY <a id="pe-xhtml-qname-extra.mod" class="entity">% xhtml-qname-extra.mod</a>
    %xhtml-qname-extra.decl;
&gt;
]]&gt;

&lt;!-- Declare location of math and svg contents in XHTML.
--&gt;

&lt;![%MATHML.module;[
&lt;![%MATHML.prefixed;[
&lt;!ENTITY % MATHML.pfx        "%MATHML.prefix;:" &gt;
]]&gt;
&lt;!ENTITY <a id="pe-MATHML.pfx" class="entity">% MATHML.pfx</a>        "" &gt;
&lt;!ENTITY <a id="pe-math.qname" class="entity">% math.qname</a>        "%MATHML.pfx;math" &gt;
&lt;!ENTITY <a id="pe-MATHML.math.class" class="entity">% MATHML.math.class</a> "| %math.qname;" &gt;
]]&gt;
&lt;!ENTITY % MATHML.math.class "" &gt;

&lt;![%SVG.module;[
&lt;![%SVG.prefixed;[
&lt;!ENTITY <a id="pe-SVG.pfx" class="entity">% SVG.pfx</a>           "%SVG.prefix;:" &gt;
]]&gt;
&lt;!ENTITY % SVG.pfx           "" &gt;
&lt;!ENTITY <a id="pe-SVG.svg.qname" class="entity">% SVG.svg.qname</a>     "%SVG.pfx;svg" &gt;
&lt;!ENTITY <a id="pe-SVG.svg.class" class="entity">% SVG.svg.class</a>     "| %SVG.svg.qname;" &gt;
]]&gt;
&lt;!ENTITY % SVG.svg.class     "" &gt;

&lt;![%XHTML.module;[
&lt;![%XHTML.Basic.module;[
&lt;!ENTITY <a id="pe-Misc.class" class="entity">% Misc.class</a>
    "%MATHML.math.class; %SVG.svg.class;" &gt;
]]&gt;
&lt;!ENTITY <a id="pe-Misc.extra" class="entity">% Misc.extra</a>
    "%MATHML.math.class; %SVG.svg.class;" &gt;
]]&gt;

&lt;!-- Redeclare SVG's foreignObject content (allow anything).
--&gt;
&lt;![%SVG.module;[
&lt;!ENTITY <a id="pe-SVG.foreignObject.content" class="entity">% SVG.foreignObject.content</a> "ANY" &gt;
]]&gt;

&lt;!-- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: --&gt;

&lt;!-- Instantiate SVG DTD  ........................................ --&gt;
&lt;![%SVG.module;[
&lt;!ENTITY <a id="pe-SVG.dtd.decl" class="entity">% SVG.dtd.decl</a>
    'PUBLIC "%SVG.dtd.fpi;"
            "%SVG.dtd.sysid;"'
&gt;
&lt;!ENTITY <a id="pe-SVG.dtd" class="entity">% SVG.dtd</a> %SVG.dtd.decl; &gt;
%SVG.dtd;
]]&gt;

&lt;!-- Instantiate XHTML DTD  ...................................... --&gt;
&lt;![%XHTML.module;[
&lt;!ENTITY <a id="pe-XHTML.dtd.decl" class="entity">% XHTML.dtd.decl</a>
    'PUBLIC "%XHTML.dtd.fpi;"
            "%XHTML.dtd.sysid;"'
&gt;
&lt;!ENTITY <a id="pe-XHTML.dtd" class="entity">% XHTML.dtd</a> %XHTML.dtd.decl; &gt;
%XHTML.dtd;
]]&gt;

&lt;!-- instantiate MathML 2.0 DTD  ................................. --&gt;
&lt;![%MATHML.module;[
&lt;!ENTITY <a id="pe-MATHML.dtd.decl" class="entity">% MATHML.dtd.decl</a>
    'PUBLIC "-//W3C//DTD MathML 2.0//EN"
            "%MATHML.dtd.sysid;"'
&gt;
&lt;!ENTITY <a id="pe-MATHML.dtd" class="entity">% MATHML.dtd</a> %MATHML.dtd.decl; &gt;
%MATHML.dtd;
]]&gt;

&lt;!-- end of xhtml-math-svg.dtd --&gt;
</pre>
</div>

<div class="informative">
<h2 id="howto">3.&#160;&#160;How to use XHTML 1.1 + MathML 2.0 +
SVG 1.1 DTD</h2>

<p><em>This section is informative.</em></p>

<p>As shown in the above DTD driver, a couple of parameter entities are
prepared to switch on/off namespace prefixes and to change namespace
prefixes arbitrarily.  The default values are as follows:</p>

<pre id="pe-MODULE.prefixing" class="dtd-fragment"
>&lt;!ENTITY % XHTML.prefixed  "IGNORE" &gt;
&lt;!ENTITY % XHTML.prefix    "" &gt;
&lt;!ENTITY % MATHML.prefixed "IGNORE" &gt;
&lt;!ENTITY % MATHML.prefix   "m" &gt;
&lt;!ENTITY % SVG.prefixed    "INCLUDE" &gt;
&lt;!ENTITY % SVG.prefix      "svg" &gt;
&lt;!ENTITY % XLINK.prefix    "xlink" &gt;
</pre>

<dl>
<dt id="pe-MODULE.prefixed"><code class="pe">%XHTML.prefixed;</code>,
<code class="pe">%MATHML.prefixed;</code>,
<code class="pe">%SVG.prefixed;</code></dt>
<dd>
    <p>These parameter entities switch on/off namespace prefixing.  Setting
    the value to '<code>INCLUDE</code>' makes namespace prefixing on,
    and '<code>IGNORE</code>' switches off namespace prefixing.
    By default, XHTML and MathML are not prefixed, and SVG is prefixed
    with '<var class="prefix">svg:</var>'.</p>

    <p>Also check the <a href="#bug-name-collision">limitation on
    name collisions</a>.</p>
</dd>

<dt id="pe-MODULE.prefix"><code class="pe">%XHTML.prefix;</code>,
<code class="pe">%MATHML.prefix;</code>,
<code class="pe">%SVG.prefix;</code>,
<code class="pe">%XLINK.prefix;</code></dt>
<dd>
    <p>These parameter entities set namespace prefixes for relevant
    vocabularies.  These values take effect only if relevant prefixing
    is enabled.  The same prefix may not be used for different vocabularies.
    Note that XLink attributes must always be prefixed, so the value of
    <code class="pe">%XLINK.prefix;</code> must not be an empty string.</p>
</dd>
</dl>

<p>There are also parameter entities that define system identifiers
for relevant DTD modules as follows:</p>

<pre id="pe-MODULE.sysid" class="dtd-fragment"
>&lt;!ENTITY % XHTML.sysid.base
         "http://www.w3.org/TR/xhtml-modularization/DTD/" &gt;
&lt;!ENTITY % MATHML.sysid.base
         "http://www.w3.org/Math/DTD/mathml2/" &gt;
&lt;!ENTITY % SVG.sysid.base
         "http://www.w3.org/Graphics/SVG/1.1/DTD/" &gt;

&lt;!ENTITY % XHTML.dtd.sysid
         "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd" &gt;
&lt;!ENTITY % MATHML.dtd.sysid
         "%MATHML.sysid.base;mathml2.dtd" &gt;
&lt;!ENTITY % MATHML.qname.sysid
         "%MATHML.sysid.base;mathml2-qname-1.mod" &gt;
&lt;!ENTITY % SVG.dtd.sysid
         "%SVG.sysid.base;svg11.dtd" &gt;
</pre>

<p>When necessary, these parameter entities may be overridden to point to
local copies of those DTD modules, e.g. for off-line authoring. Authors
should not override these parameter entities when delivering the content.</p>


<h3 id="howto-xhtml">3.1.&#160;&#160;XHTML as the Host Language</h3>

<p>If authors want to use XHTML as the host language, this DTD driver may
be typically invoked as follows:</p>

<pre id="xhtml-prolog" class="prolog"
>&lt;!DOCTYPE html PUBLIC
    "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"
    "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">
</pre>

<p>If necessary, authors may change the above parameter entities as appropriate
in the internal DTD subset.  A typical document might look something like
this:</p>

<pre id="ex-xhtml" class="xml"
>&lt;?xml version="1.0"?>
&lt;!DOCTYPE html PUBLIC
    "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"
    "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">
&lt;html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
  &lt;head>
    &lt;title>XHTML as the host language&lt;/title>
  &lt;/head>
  &lt;body>
    <var>... XHTML content ...</var>
    &lt;math xmlns="http://www.w3.org/1998/Math/MathML">
      <var>... MathML content ...</var>
    &lt;/math>
    <var>... XHTML content ...</var>
    &lt;svg:svg version="1.1"
      xmlns:svg="http://www.w3.org/2000/svg"
      xmlns:xlink="http://www.w3.org/1999/xlink">
      <var>... SVG content ...</var>
      &lt;svg:switch>
        &lt;svg:foreignObject ...>
          &lt;p>
            <var>... XHTML content ...</var>
            &lt;math xmlns="http://www.w3.org/1998/Math/MathML">
              <var>... MathML content ...</var>
            &lt;/math>
            <var>... XHTML content ...</var>
          &lt;/p>
        &lt;/svg:foreignObject>
      &lt;/svg:switch>
    &lt;/svg:svg>
  &lt;/body>
&lt;/html>
</pre>

<p>If MathML is not prefixed, the MathML namespace must always be
declared on the <code class="element">math</code> element to avoid
confusion of namespace defaulting with XHTML.</p>

<h3 id="howto-svg">3.2.&#160;&#160;SVG as the Host Language</h3>

<p>If authors want to use SVG as the host language, this DTD driver may
be typically invoked as follows:</p>

<pre id="svg-prolog" class="prolog"
>&lt;!DOCTYPE svg:svg PUBLIC
    "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"
    "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">
</pre>

<p>In this case SVG elements are still prefixed and XHTML and MathML
elements are not prefixed.  In order to make SVG elements non-prefixed,
authors may adjust <a href="#pe-MODULE.prefixing">relevant parameter
entities</a> in the internal DTD subset like this:</p>

<pre id="ex-svg1" class="xml"
>&lt;?xml version="1.0"?>
&lt;!DOCTYPE svg PUBLIC
    "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"
    "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd"[
&lt;!ENTITY % SVG.prefixed "IGNORE" >
&lt;!ENTITY % XHTML.prefixed "INCLUDE" >
&lt;!ENTITY % XHTML.prefix "xhtml" >
&lt;!ENTITY % MATHML.prefixed "INCLUDE" >
&lt;!ENTITY % MATHML.prefix "math" >
]>
&lt;svg version="1.1" xml:lang="en"
     xmlns="http://www.w3.org/2000/svg"
     xmlns:xlink="http://www.w3.org/1999/xlink">
  &lt;desc>SVG as the host language&lt;/desc>
  <var>... SVG content ...</var>
  &lt;switch>
    &lt;foreignObject ...>
      &lt;xhtml:p xmlns:xhtml="http://www.w3.org/1999/xhtml">
        <var>... XHTML content ...</var>
        &lt;math:math xmlns:math="http://www.w3.org/1998/Math/MathML">
          <var>... MathML content ...</var>
        &lt;/math:math>
        <var>... XHTML content ...</var>
      &lt;/xhtml:p>
    &lt;/foreignObject>
  &lt;/switch>
  <var>... SVG content ...</var>
&lt;/svg>
</pre>

<p>Note that the namespace declarations may be collectively declared on
the root element (or other elements), like:</p>

<pre id="ex-svg2" class="xml"
>&lt;?xml version="1.0"?>
&lt;!DOCTYPE svg PUBLIC
    "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"
    "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd"[
&lt;!ENTITY % SVG.prefixed "IGNORE" >
&lt;!ENTITY % XHTML.prefixed "INCLUDE" >
&lt;!ENTITY % XHTML.prefix "xhtml" >
&lt;!ENTITY % MATHML.prefixed "INCLUDE" >
&lt;!ENTITY % MATHML.prefix "math" >
]>
&lt;svg version="1.1" xml:lang="en"
     xmlns="http://www.w3.org/2000/svg"
     xmlns:xlink="http://www.w3.org/1999/xlink"
     xmlns:xhtml="http://www.w3.org/1999/xhtml"
     xmlns:math="http://www.w3.org/1998/Math/MathML">
  &lt;desc>SVG as the host language&lt;/desc>
  <var>... SVG content ...</var>
  &lt;switch>
    &lt;foreignObject ...>
      &lt;xhtml:p>
        <var>... XHTML content ...</var>
        &lt;math:math>
          <var>... MathML content ...</var>
        &lt;/math:math>
        <var>... XHTML content ...</var>
      &lt;/xhtml:p>
   &lt;/foreignObject>
  &lt;/switch>
  <var>... SVG content ...</var>
&lt;/svg>
</pre>

<h3 id="howto-math">3.3.&#160;&#160;Using MathML with Universal
MathML stylesheet</h3>


<p>When using MathML, authors may wish to use the "Universal MathML stylesheet"
[<a class="informref" href="#ref-mathml-xsl">MathML-XSL</a>] to make it
possible to be viewed on a large number of Web browsers.  This DTD driver
allows authors to use this <abbr title="XSL Transformations">XSLT</abbr>
stylesheet easily.
The DTD driver includes the following parameter entities:</p>

<pre id="pe-MATHML.pref" class="xml"
>&lt;!ENTITY % MATHML.pref.prefixed "IGNORE" &gt;
&lt;!ENTITY % MATHML.pref.prefix   "pref" &gt;
</pre>

<p>Authors may include an XML stylesheet processing instruction for
the universal MathML stylesheet as explained in "<cite>Putting mathematics
on the Web with MathML</cite>" [<a class="informref"
href="#ref-mathml-xsl">MathML-XSL</a>], and when they want to
specify preferences for the MathML renderer, they may set the
<code class="pe">%MATHML.pref.prefixed;</code> parameter entity to
"<code>INCLUDE</code>".
This allows authors to declare the MathML preferences namespace
and use the <code class="attribute">renderer</code> attribute like this:</p>

<pre id="ex-mathml" class="xml"
>&lt;?xml version="1.0"?>
&lt;?xml-stylesheet type="text/xsl" href="http://www.w3.org/Math/XSL/mathml.xsl"?>
&lt;!DOCTYPE html PUBLIC
    "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"
    "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd"[
&lt;!ENTITY % MATHML.pref.prefixed "INCLUDE" &gt;
]>
&lt;html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"
      xmlns:pref="http://www.w3.org/2002/Math/preference"
      pref:renderer="css">
  &lt;head> ... &lt;/head>
  &lt;body> ... &lt;/body>
&lt;/html>
</pre>

<p>The namespace prefix for the MathML preferences namespace may be
changed by redeclaring the <code class="pe">%MATHML.pref.prefix;</code>
parameter entity in the internal DTD subset.</p>
</div>

<div class="informative">
<h2 id="profiles">4.&#160;&#160;How to define new profiles from XHTML 1.1 +
MathML 2.0 + SVG 1.1 DTD</h2>

<p><em>This section is informative.</em></p>

<p>This DTD driver can also be used as a basis for defining other
profiles that combine some or all of XHTML, MathML and SVG.
This DTD driver has switches to include/ignore each vocabulary,
all set to "<code>INCLUDE</code>" by default:</p>

<pre id="pe-MODULE.module" class="dtd-fragment"
>&lt;!ENTITY % XHTML.module  "INCLUDE" &gt;
&lt;!ENTITY % MATHML.module "INCLUDE" &gt;
&lt;!ENTITY % SVG.module    "INCLUDE" &gt;
</pre>

<p>For example, by redeclaring the <code class="pe">%MATHML.module;</code>
parameter entity to "<code>IGNORE</code>", this DTD driver
can be used as an XHTML 1.1 + SVG 1.1 DTD.</p>

<p>People might want to use other XHTML Family document type such as
XHTML Basic [<a class="informref" href="#ref-xhtml-basic">XHTMLBasic</a>]
instead of XHTML 1.1, or other SVG profiles like SVG Basic/Tiny
[<a class="informref" href="#ref-svgmobile">SVGMobile</a>] instead of full
SVG 1.1.  There are predefined parameter entities to allow those subsets
easily, all set to "<code>IGNORE</code>" by default:</p>

<pre id="pe-MODULE.SUBSET.module" class="dtd-fragment"
>&lt;!ENTITY % XHTML.Basic.module "IGNORE" &gt;
&lt;!ENTITY % SVG.Basic.module   "IGNORE" &gt;
&lt;!ENTITY % SVG.Tiny.module    "IGNORE" &gt;
</pre>

<p>By redeclaring the <code class="pe">%XHTML.Basic.module;</code>
parameter entity to "<code>INCLUDE</code>", this DTD driver will use
XHTML Basic instead of XHTML 1.1 for XHTML part.  Likewise,
<code class="pe">%SVG.Basic.module;</code> and
<code class="pe">%SVG.Tiny.module;</code> control whether to use
SVG Basic/Tiny instead of SVG 1.1, respectively.
When both <code class="pe">%SVG.Basic.module;</code> and
<code class="pe">%SVG.Tiny.module;</code> are set to "<code>INCLUDE</code>",
SVG Tiny will be used.</p>

<p>Using this mechanism, XHTML Basic + SVG Tiny DTD can be
simply written like this:</p>

<pre id="xhtml-basic-svg-tiny.dtd" class="dtd"
>&lt;!-- ....................................................................... --&gt;
&lt;!-- XHTML Basic plus SVG Tiny DTD  ........................................ --&gt;
&lt;!-- URI: <a type="application/xml-dtd"
href="http://www.w3.org/2002/04/xhtml-math-svg/xhtml-basic-svg-tiny.dtd"
>http://www.w3.org/2002/04/xhtml-math-svg/xhtml-basic-svg-tiny.dtd</a>
--&gt;

&lt;!ENTITY % XHTML.version
         "-//W3C//DTD XHTML Basic plus SVG Tiny//EN" &gt;

&lt;!ENTITY % XHTML.Basic.module "INCLUDE" &gt;
&lt;!ENTITY % MATHML.module      "IGNORE" &gt;
&lt;!ENTITY % SVG.Tiny.module    "INCLUDE" &gt;

&lt;!ENTITY % XHTML-MATH-SVG.dtd
    PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"
           "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd" &gt;
%XHTML-MATH-SVG.dtd;

&lt;!-- end of xhtml-basic-svg-tiny.dtd --&gt;
</pre>

<p>In addition, each DTD is parameterized as
<a href="#pe-XHTML.dtd"><code class="pe">%XHTML.dtd;</code></a>,
<a href="#pe-MATHML.dtd"><code class="pe">%MATHML.dtd;</code></a> and
<a href="#pe-SVG.dtd"><code class="pe">%SVG.dtd;</code></a>,
so by redeclaring the relevant parameter entity to refer to a different
DTD, different profile may be easily defined.</p>
</div>


<div class="informative">
<h2 id="bugs">5.&#160;&#160;Known limitations</h2>

<p><em>This section is informative.</em></p>

<p>Although this DTD driver has taken a great stride to provide
as much flexibility as possible, there are some limitations,
mostly due to the limitation of the DTD mechanism itself.</p>

<ul>
<li id="bug-name-collision">Due to name collisions, XHTML and SVG, or MathML
    and SVG cannot be used together without prefixing either of them.</li>
<li id="bug-prefixing">Arbitrary prefixes can be chosen, but those cannot be
    changed in the middle of the same document (e.g. if authors choose to
    prefix SVG elements, authors have to always prefix them and have to use
    the same prefix throughout the document, and they cannot use
    defaulting in that document).</li>
<li id="bug-mathml-nsdecl">Only MathML and XLink namespace declarations are
    allowed on MathML elements, and XHTML or SVG namespaces cannot be
    declared.</li>
<li id="bug-extension">This DTD driver is not designed to allow arbitrary
    foreign namespaces (simply not possible with DTD).  Adding yet another
    vocabulary beyond XHTML+MathML+SVG may not be trivial, either.</li>
<li id="issue-mixed" class="issue"><p><strong>ISSUE</strong>:
    At the moment, inside SVG, XHTML and MathML fragments are only
    allowed through the <code class="element">foreignObject</code>
    element. It would make sense to also allow those foreign namespace
    fragments inside the <code class="element">desc</code> and <code
    class="element">title</code> elements. Future update of this profile
    may allow such integration.</p>
    <p>It is also under discussion whether to allow those foreign namespace
    fragments directly inside elements like <code class="element">text</code>
    and <code class="element">tspan</code>.  Such a close integration would
    be useful for mathematical diagrams, but the processing needs to be
    clarified.</p>
</li>
</ul>
</div>


<h2 id="ref">References</h2>

<div class="normative">
<h3 id="normref">Normative references</h3>

<dl class="normref">
<dt id="ref-mathml2">[MathML2]</dt>

<dd>"<cite><a href="http://www.w3.org/TR/2001/REC-MathML2-20010221/"
>Mathematical Markup Language (MathML) Version 2.0</a></cite>",
W3C Recommendation</dd>

<dd><p>D. Carlisle, P. Ion, R. Miner, N. Poppelier,
<em><abbr title="editors">eds.</abbr></em>, 21 February 2001</p>
<p>Available at: http://www.w3.org/TR/2001/REC-MathML2-20010221</p>
<p>The <a href="http://www.w3.org/TR/MathML2/">latest version</a> is
available at: http://www.w3.org/TR/MathML2</p></dd>

<dt id="ref-ruby">[Ruby]</dt>

<dd>"<cite><a href="http://www.w3.org/TR/2001/REC-ruby-20010531/">Ruby
Annotation</a></cite>", W3C Recommendation</dd>

<dd><p>M. Sawicki, M. Suignard, M. Ishikawa, M. Dürst, T. Texin,
<em>eds.</em>, 31 May 2001.</p>
<p>Available at: http://www.w3.org/TR/2001/REC-ruby-20010531</p>
<p>The <a href="http://www.w3.org/TR/ruby/">latest version</a> is
available at: http://www.w3.org/TR/ruby</p></dd>

<dt id="ref-svg11">[SVG11]</dt>

<dd>"<cite><a href="http://www.w3.org/TR/2002/CR-SVG11-20020430/">Scalable
Vector Graphics (SVG) 1.1 Specification</a></cite>",
W3C Candidate Recommendation</dd>

<dd><p>D. Jackson, J. Ferraiolo, J. Fujisawa, <em>eds.</em>,
30 April 2002, <em>work in progress</em>.</p>
<p>Available at: http://www.w3.org/TR/2002/CR-SVG11-20020430/</p>
<p>The <a href="http://www.w3.org/TR/SVG11/">latest version</a> is
available at: http://www.w3.org/TR/SVG11/</p></dd>

<dt id="ref-URI">[URI]</dt>

<dd><p>"<cite><a href="http://www.rfc-editor.org/rfc/rfc2396.txt">Uniform
Resource Identifiers (URI): Generic Syntax</a></cite>",
RFC 2396, T. Berners-Lee, R. Fielding, L. Masinter, August 1998.</p>
<p>Available at: http://www.rfc-editor.org/rfc/rfc2396.txt</p></dd>

<dt id="ref-xhtml11">[XHTML11]</dt>

<dd>"<cite><a href="http://www.w3.org/TR/2001/REC-xhtml11-20010531/"
>XHTML&#8482; 1.1 &#8212; Module-based XHTML</a></cite>",
W3C Recommendation</dd>

<dd><p>M. Altheim, S. McCarron, <em>eds.</em>, 31 May 2001.</p>
<p>Available at: http://www.w3.org/TR/2001/REC-xhtml11-20010531</p>
<p>The <a href="http://www.w3.org/TR/xhtml11/">latest version</a> is
available at: http://www.w3.org/TR/xhtml11</p></dd>

<dt id="ref-xhtmlmod">[XHTMLMOD]</dt>

<dd>"<cite><a
href="http://www.w3.org/TR/2001/REC-xhtml-modularization-20010410/"
>Modularization of XHTML&#8482;</a></cite>", W3C Recommendation</dd>

<dd><p>S. P. McCarron <em lang="lt">et al.</em>, 10 April 2001.</p>
<p>Available at: http://www.w3.org/TR/2001/REC-xhtml-modularization-20010410</p>
<p>The <a href="http://www.w3.org/TR/xhtml-modularization/">latest version</a>
is available at: http://www.w3.org/TR/xhtml-modularization</p></dd>

<dt id="ref-xmlns">[XMLNS]</dt>

<dd>"<cite><a href="http://www.w3.org/TR/1999/REC-xml-names-19990114/"
>Namespaces in XML</a></cite>", W3C Recommendation</dd>

<dd><p>T. Bray, D. Hollander, A. Layman, <em>eds.</em>, 14 January 1999.
Available at: http://www.w3.org/TR/1999/REC-xml-names-19990114</p>
<p>The <a href="http://www.w3.org/TR/REC-xml-names/">latest version</a> is
available at: http://www.w3.org/TR/REC-xml-names</p></dd>
</dl>
</div>

<div class="informative">
<h3 id="informref">Informative references</h3>

<dl class="informref">
<dt id="ref-mathml-xsl">[MathML-XSL]</dt>

<dd>"<cite><a href="http://www.w3.org/Math/XSL/">Putting mathematics
on the Web with MathML</a></cite>", W3C Math Working Group, 2002.</dd>

<dt id="ref-svgmobile">[SVGMobile]</dt>

<dd>"<cite><a href="http://www.w3.org/TR/2002/CR-SVGMobile-20020430/">Mobile
SVG Profiles: SVG Tiny and SVG Basic</a></cite>",
W3C Candidate Recommendation</dd>

<dd><p>T. Capin, <em><abbr title="editor">ed.</abbr></em>,
30 April 2002, <em>work in progress</em>.</p>
<p>Available at: http://www.w3.org/TR/2002/CR-SVGMobile-20020430/</p>
<p>The <a href="http://www.w3.org/TR/SVGMobile/">latest version</a> is
available at: http://www.w3.org/TR/SVGMobile/</p></dd>

<dt id="ref-xhtml-basic">[XHTMLBasic]</dt>

<dd>"<cite><a
href="http://www.w3.org/TR/2000/REC-xhtml-basic-20001219/">XHTML&#8482;
Basic</a></cite>", W3C Recommendation</dd>

<dd><p>M. Baker, M. Ishikawa, S. Matsui, P. Stark, T. Wugofski, T. Yamakami,
<em>eds.</em>, 19 December 2000.
Available at: http://www.w3.org/TR/2000/REC-xhtml-basic-20001219</p>
<p>The <a href="http://www.w3.org/TR/xhtml-basic/">latest version</a> is
available at: http://www.w3.org/TR/xhtml-basic</p></dd>

<dt id="ref-xhtmlmodschema">[XHTMLMODSchema]</dt>

<dd>"<cite><a
href="http://www.w3.org/TR/2001/WD-xhtml-m12n-schema-20011219/">Modularization
of XHTML&#8482; in XML Schema</a></cite>", W3C Working Draft</dd>

<dd><p>D. Austin, S. P. McCarron, <em>eds.</em>, 19 December 2001,
<em>work in progress</em>.</p>
<p>Available at: http://www.w3.org/TR/2001/WD-xhtml-m12n-schema-20011219</p>
<p>The <a href="http://www.w3.org/TR/xhtml-m12n-schema/">latest version</a>
is available at: http://www.w3.org/TR/xhtml-m12n-schema</p></dd>

<dt id="ref-xmlschema">[XMLSchema]</dt>

<dd>"<cite><a href="http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/">XML
Schema Part 1: Structures</a></cite>", W3C Recommendation</dd>

<dd><p>H. S. Thompson, D. Beech, M. Maloney, N. Mendelsohn,
<em>eds.</em>, 2 May 2001.</p>
<p>Available at: http://www.w3.org/TR/2001/REC-xmlschema-1-20010502</p>
<p>The <a href="http://www.w3.org/TR/xmlschema-1/">latest version</a>
is available at: http://www.w3.org/TR/xmlschema-1</p></dd>

<dd><p>See also "<cite><a
href="http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/">XML Schema Part 2:
Datatypes</a></cite>", available at:
http://www.w3.org/TR/2001/REC-xmlschema-2-20010502</p>
<p>The <a href="http://www.w3.org/TR/xmlschema-2/">latest version</a>
is available at: http://www.w3.org/TR/xmlschema-2</p></dd>
</dl>
</div>

<div class="informative">
<h2 id="changes">Changes from previous Working Draft</h2>

<p><em>This section is informative.</em></p>

<dl>
<dt id="changes-driver">2.1.&#160;&#160;<a href="#driver">XHTML 1.1 +
MathML 2.0 + SVG 1.1 DTD Driver</a></dt>

<dd>Added mechanism to allow subsets easily.</dd>

<dd>Changed <a href="#pe-MATHML.sysid.base"><code class="pe"
>%MATHML.sysid.base;</code></a> to point to an updated MathML 2.0 DTD.</dd>

<dt id="changes-howto-xhtml">3.1.&#160;&#160;<a href="#howto-xhtml">XHTML
as the Host Language</a></dt>

<dd>Fixed wrong namespace declaration for SVG in
the <a href="#ex-xhtml">example</a>.</dd>

<dt id="changes-profiles">4.&#160;&#160;<a href="#profiles">How to define
new profiles from XHTML 1.1 + MathML 2.0 + SVG 1.1 DTD</a></dt>

<dd>Added explanation for new subset mechanism, and updated XHTML Basic +
SVG Tiny DTD example to use this mechanism.</dd>

<dt id="changes-bugs">5.&#160;&#160;<a href="#bugs">Known limitations</a></dt>

<dd>With the update of MathML 2.0 DTD, the <a href="#bug-mathml-nsdecl"
>limitation about XLink namespace declarations on MathML elements</a> has
been removed.</dd>

<dd>Added an <a href="#issue-mixed">issue about more close integration
of XHTML/MathML inside SVG</a></dd>
</dl>
</div>

<div class="informative">
<h2 id="acknowledgments">Acknowledgments</h2>

<p><em>This section is informative.</em></p>

<p><em>(To be added)</em></p>
</div>
</body>
</html>