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<h1><acronym title="Extensible HyperText Markup Language">XHTML</acronym><span
class="tm">&#8482;</span> Basic</h1>

<h2><acronym title="World Wide Web Consortium">W3C</acronym> Recommendation
19 December 2000</h2>

  <dl>
    <dt>This version:</dt>
    <dd><a href="http://www.w3.org/TR/2000/REC-xhtml-basic-20001219"
      >http://www.w3.org/TR/2000/REC-xhtml-basic-20001219</a><br />
     (<a href="xhtml-basic.txt">Plain text version</a>,
     <a href="xhtml-basic.ps">PostScript version</a>,
     <a href="xhtml-basic.pdf"><acronym
     title="Portable Document Format">PDF</acronym> version</a>,
     <a href="xhtml-basic.zip">ZIP archive</a>, or
     <a href="xhtml-basic.tgz">Gzip'd TAR archive</a>)
    </dd>
    <dt>Latest version:</dt>
    <dd><a href="http://www.w3.org/TR/xhtml-basic"
      >http://www.w3.org/TR/xhtml-basic</a>
    </dd>
    <dt>Previous version:</dt>
    <dd><a href="http://www.w3.org/TR/2000/PR-xhtml-basic-20001103"
      >http://www.w3.org/TR/2000/PR-xhtml-basic-20001103</a></dd>
    <dt>Editors:</dt>
    <dd><a href="mailto:Mark.A.Baker@canada.sun.com">Mark Baker</a>,
      Sun Microsystems</dd>
    <dd><a href="mailto:mimasa@w3.org">Masayasu Ishikawa</a>,
      <acronym title="World Wide Web Consortium">W3C</acronym></dd>
    <dd><a href="mailto:matsui@isl.mei.co.jp">Shinichi Matsui</a>,
       Panasonic</dd>
    <dd><a href="mailto:peter.stark@ecs.ericsson.se">Peter Stark</a>,
       Ericsson</dd>
    <dd><a href="mailto:ted.wugofski@openwave.com">Ted Wugofski</a>,
       Openwave Systems</dd>
    <dd><a href="mailto:yam@access.co.jp">Toshihiko Yamakami</a>,
       ACCESS <abbr title="Company">Co.</abbr>,
      <abbr title="Limited">Ltd.</abbr></dd>
  </dl>

<p class="copyright"><a
href="http://www.w3.org/Consortium/Legal/ipr-notice-20000612#Copyright"
>Copyright</a> &#169; 1999-2000 <a href="http://www.w3.org/"><acronym
title="World Wide Web Consortium">W3C</acronym></a><span
class="reg">&#174;</span> (<a href="http://www.lcs.mit.edu/"><acronym
title="Massachusetts Institute of Technology">MIT</acronym></a>,
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>INRIA</acronym></a>, <a href="http://www.keio.ac.jp/">Keio</a>), All Rights
Reserved. <acronym title="World Wide Web Consortium">W3C</acronym> <a
href="http://www.w3.org/Consortium/Legal/ipr-notice-20000612#Legal_Disclaimer"
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</div>


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

<p>The <acronym title="Extensible HyperText Markup Language">XHTML</acronym>
Basic document type includes the minimal set of modules required to be
an <acronym title="Extensible HyperText Markup Language">XHTML</acronym>
host language document type, and in addition it includes images, forms,
basic tables, and object support.
It is designed for Web clients that do not support the full set of
<acronym title="Extensible HyperText Markup Language">XHTML</acronym>
features; for example, Web clients such as mobile phones,
<acronym title="Personal Digital Assistant">PDA</acronym>s,
pagers, and settop boxes. The document type is rich enough for
content authoring.</p>

<p><acronym title="Extensible HyperText Markup Language">XHTML</acronym>
Basic is designed as a common base that may be extended. For example,
an event module that is more generic than the traditional <acronym
title="HyperText Markup Language">HTML</acronym> 4 event system could
be added or it could be extended by additional modules from <acronym
title="Extensible HyperText Markup Language">XHTML</acronym>
Modularization such as the Scripting Module. The goal of
<acronym title="Extensible HyperText Markup Language">XHTML</acronym>
Basic is to serve as a common language supported by various kinds of
user agents.</p>

<p>The document type definition is implemented using
<acronym title="Extensible HyperText Markup Language">XHTML</acronym>
modules as defined in "<cite>Modularization of
<acronym title="Extensible HyperText Markup Language">XHTML</acronym></cite>"
[<a href="#ref_xhtmlmod">XHTMLMOD</a>].</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 <acronym title="World Wide Web Consortium">W3C</acronym>.</em></p>

<p>This document has been reviewed by
<acronym title="World Wide Web Consortium">W3C</acronym> Members and other
interested parties and has been endorsed by the Director as a
<a href="http://www.w3.org/Consortium/Process/Process-19991111/tr.html#RecsW3C"
><acronym title="World Wide Web Consortium">W3C</acronym> Recommendation</a>.
It is a stable document and may be used as reference material or cited
as a normative reference from another document.
<acronym title="World Wide Web Consortium">W3C</acronym>'s role
in making the Recommendation is to draw attention to the specification
and to promote its widespread deployment.
This enhances the functionality and interoperability of the Web.</p>  


<p>This document has been produced by the
<a href="http://www.w3.org/MarkUp/Group/"><acronym
title="World Wide Web Consortium">W3C</acronym> <acronym
title="HyperText Markup Language">HTML</acronym> Working Group</a>
(<em><a href="http://cgi.w3.org/MemberAccess/AccessRequest">members
only</a></em>) as part of the <a href="http://www.w3.org/MarkUp/"><acronym
title="World Wide Web Consortium">W3C</acronym> <acronym
title="HyperText Markup Language">HTML</acronym> Activity</a>.
It integrates feedback from the <a href="http://www.wapforum.org/"><acronym
title="Wireless Application Protocol">WAP</acronym> Forum</a>
and members of the <a href="http://www.w3.org/Mobile/Group/IG/"><acronym
title="World Wide Web Consortium">W3C</acronym> Mobile Access Interest
Group</a> (<em><a href="http://cgi.w3.org/MemberAccess/AccessRequest">members
only</a></em>). This document will be used by
the <acronym title="World Wide Web Consortium">W3C</acronym>
<acronym title="HyperText Markup Language">HTML</acronym> Working Group
and the <acronym title="World Wide Web Consortium">W3C</acronym> Mobile
Access Interest Group to find a common ground for future markup languages
aimed at content for small information appliances.</p>

<p>"<cite>Modularization of <acronym
title="Extensible HyperText Markup Languge">XHTML</acronym></cite>"
[<a href="#ref_xhtmlmod">XHTMLMOD</a>] defines the <acronym
title="Extensible HyperText Markup Languge">XHTML</acronym> modules 
used in the <acronym title="Extensible HyperText Markup Languge"
>XHTML</acronym> Basic document type. At the time of this publication, the
<a href="http://www.w3.org/Consortium/Process/Process-19991111/tr.html#RecsCR"
>Candidate Recommendation</a> review period for "Modularization of
<acronym title="Extensible HyperText Markup Languge">XHTML</acronym>" has
closed. Based on that review, the <acronym title="World Wide Web Consortium"
>W3C</acronym> <acronym title="HyperText Markup Language">HTML</acronym>
Working Group believes that the definition of modules used in <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic is
stable, and the Working Group does not expect to make changes to
"Modularization of <acronym title="Extensible HyperText Markup Language"
>XHTML</acronym>" that would be incompatible with <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic.</p>

<p>Public discussion of <acronym
title="HyperText Markup Language">HTML</acronym> takes place on
<a href="mailto:www-html@w3.org">www-html@w3.org</a>
(<a href="http://lists.w3.org/Archives/Public/www-html/">archive</a>).
To subscribe send an email to
<a href="mailto:www-html-request@w3.org">www-html-request@w3.org</a>
with the word <em>subscribe</em> in the subject line.</p>

<p>Please report errors in this document 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>).
The list of <a href="http://www.w3.org/2000/12/REC-xhtml-basic-20001219-errata"
>known errors</a> in this document is available at
http://www.w3.org/2000/12/REC-xhtml-basic-20001219-errata.</p>

<p>The English version of this specification is the only normative version.
Information about <a href="http://www.w3.org/MarkUp/translations">translations
of this document</a> is available at http://www.w3.org/MarkUp/translations.</p>

<p>A list of current <acronym title="World Wide Web Consortium">W3C</acronym>
Recommendations and other technical documents can be found at
<a href="http://www.w3.org/TR">http://www.w3.org/TR</a>.</p>


<h2 id="contents">Table of Contents</h2>

<div class="toc">
<ul>
  <li>1. <a href="#s_intro">Introduction</a>
  <ul>
    <li>1.1. <a href="#s1.1"><acronym
      title="Extensible HyperText Markup Language">XHTML</acronym> for
      Small Information Appliances</a></li>
    <li>1.2. <a href="#s1.2">Background and Requirements</a></li>
    <li>1.3. <a href="#s1.3">Design Rationale</a></li>
  </ul>
  </li>
  <li>2. <a href="#s_conformance">Conformance</a>
  <ul>
    <li>2.1. <a href="#s2.1">Document Conformance</a></li>
    <li>2.2. <a href="#s2.2">User Agent Conformance</a></li>
  </ul>
  </li>
  <li>3. <a href="#s_xhtmlmodules">The <acronym
    title="Extensible HyperText Markup Language">XHTML</acronym> Basic
    Document Type</a></li>
  <li>4. <a href="#s_howtouse">How to Use
    <acronym title="Extensible HyperText Markup Language">XHTML</acronym>
    Basic</a></li>
  <li>5. <a href="#s_acknowledgements">Acknowledgements</a></li>
  <li>A. <a href="#a_refs">References</a>
  <ul>
    <li>A.1. <a href="#a_normrefs">Normative References</a></li>
    <li>A.2. <a href="#a_inforefs">Informative References</a></li>
  </ul>
  </li>
  <li>B. <a href="#a_dtd"><acronym title="Extensible HyperText Markup Language"
    >XHTML</acronym> Basic Document Type Definition</a>
  <ul>
    <li>B.1. <a href="#a_catalog"><acronym
      title="Standard Generalized Markup Language">SGML</acronym> Open Catalog
      Entry for <acronym title="Extensible HyperText Markup Language"
      >XHTML</acronym> Basic</a></li>
    <li>B.2. <a href="#a_driver"><acronym
      title="Extensible HyperText Markup Language">XHTML</acronym> Basic
      Driver</a></li>
    <li>B.3. <a href="#a_customization"><acronym
      title="Extensible HyperText Markup Language">XHTML</acronym> Basic
      Customizations</a></li>
  </ul>
  </li>
</ul>
</div>


<h2 id="s_intro">1. Introduction</h2>

<h3 id="s1.1">1.1. <acronym title="Extensible HyperText Markup Language"
>XHTML</acronym> for Small Information Appliances</h3>

<p><acronym title="HyperText Markup Language">HTML</acronym> 4 is
a powerful language for authoring Web content, but its design does not
take into consideration issues
pertinent to small devices, including the implementation cost (in
power, memory, <abbr title="et cetera" xml:lang="la">etc.</abbr>)
of the full feature set.
Consumer devices with limited resources cannot generally afford to
implement the full feature set of
<acronym title="HyperText Markup Language">HTML</acronym> 4.
Requiring a full-fledged computer for access to the
World Wide Web excludes a large portion of the population from
consumer device access of online information and services.</p>

<p>Because there are many ways to subset
<acronym title="HyperText Markup Language">HTML</acronym>, there are
many almost identical subsets defined by organizations and companies.
Without a common base set of features, developing applications for
a wide range of Web clients is difficult.</p>

<p>The motivation for <acronym title="Extensible HyperText Markup Language"
>XHTML</acronym> Basic is to provide an <acronym
title="Extensible HyperText Markup Language">XHTML</acronym>
document type that can be shared across communities
(<acronym title="exempli gratia" xml:lang="lt">e.g.</acronym> desktop,
<acronym title="Television">TV</acronym>, and mobile phones), and that is
rich enough to be used for simple content authoring. New community-wide
document types can be defined by extending <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic in
such a way that <acronym title="Extensible HyperText Markup Language"
>XHTML</acronym> Basic documents are in the set of valid documents of
the new document type. Thus an <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic
document can be presented on the maximum number of Web clients.</p>

<p>The document type definition for <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic is
implemented based on the <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> modules
defined in Modularization of <acronym
title="Extensible HyperText Markup Language">XHTML</acronym>
[<a href="#ref_xhtmlmod">XHTMLMOD</a>].</p>

<h3 id="s1.2">1.2. Background and Requirements</h3>

<p>Information appliances are targeted for particular uses. They support
the features they need for the functions they are designed to fulfill.
The following are examples of different information appliances:</p>

<ul>
  <li>Mobile phones</li>
  <li>Televisions</li>
  <li><acronym title="Personal Digital Assistant">PDA</acronym>s</li>
  <li>Vending machines</li>
  <li>Pagers</li>
  <li>Car navigation systems</li>
  <li>Mobile game machines</li>
  <li>Digital book readers</li>
  <li>Smart watches</li>
</ul>

<p>Existing subsets and variants of <acronym
title="HyperText Markup Language">HTML</acronym> for these clients include
Compact <acronym title="HyperText Markup Language">HTML</acronym>
[<a href="#ref_chtml">CHTML</a>], the Wireless Markup Language
[<a href="#ref_wml">WML</a>], and the "<acronym
title="HyperText Markup Language">HTML</acronym> 4.0 Guidelines for
Mobile Access" [<a href="#ref_mhtml">GUIDELINES</a>].
The common features found in these document types include:</p>

<ul>
  <li>Basic text (including headings, paragraphs, and lists)</li>
  <li>Hyperlinks and links to related documents</li>
  <li>Basic forms</li>
  <li>Basic tables</li>
  <li>Images</li>
  <li>Meta information</li>
</ul>

<p>This set of <acronym title="HyperText Markup Language">HTML</acronym>
features has been the starting point for the design of <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic.
Since many content developers are familiar with these
<acronym title="HyperText Markup Language">HTML</acronym> features,
they comprise a useful host language that may be combined with
markup modules from other languages according to the methods described in
"<cite>Modularization of
<acronym title="Extensible HyperText Markup Language">XHTML</acronym></cite>"
[<a href="#ref_xhtmlmod">XHTMLMOD</a>]. For example, <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic may
be extended with an event module that is more generic than the traditional
<acronym title="HyperText Markup Language">HTML</acronym> 4 event system
or it could be extended by additional modules from <acronym
title="Extensible HyperText Markup Language">XHTML</acronym>
Modularization such as the Scripting Module.</p>

<p>It is not the intention of <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic to
limit the functionality of future languages. But since the features
in <acronym title="HyperText Markup Language">HTML</acronym> 4 (frames,
advanced tables, a fixed set of attribute event handlers, <abbr
title="et cetera">etc.</abbr>) were developed for a desktop computer type
of client, they have proved to be inappropriate for many non-desktop devices.
<acronym title="Extensible HyperText Markup Language">XHTML</acronym>
Basic will be extended and built upon.
Extending <acronym title="Extensible HyperText Markup Language">XHTML</acronym>
from a common and basic set of features, instead of almost identical subsets
or the too-large set of functions in <acronym
title="HyperText Markup Language">HTML</acronym> 4, will be good for
interoperability on the Web, as well as for scalability.</p>

<p>Compared to the rich functionality of <acronym
title="HyperText Markup Language">HTML</acronym> 4, <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic
may look like one step back, but in fact, it is two steps forward for
clients that do not need what is in <acronym
title="HyperText Markup Language">HTML</acronym> 4 and for content
developers who get one <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> subset
instead of many.</p>

<h3 id="s1.3">1.3. Design Rationale</h3>

<p>This section explains why certain <acronym title="HyperText Markup Language"
>HTML</acronym> features are not part of <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic.</p>

<h4 id="s1.3.1">1.3.1. Style Sheets</h4>

<p>The <code>style</code> element is not supported. External style sheets
are recommended. The <code>link</code> element can be used to include
external style sheets. The <code>div</code> and <code>span</code>
elements and the <code>class</code> attribute are supported to hook
style information onto the structure. Separation between structure and
presentation allows user agents to download the style sheets if they
support style sheets; user agents that do not support style sheets
can ignore the external stylesheet. The <code>media</code> attribute can be
used to select the appropriate style sheets. See the section on "<a
href="http://www.w3.org/TR/html4/present/styles.html#h-14.2.4">Media
types</a>" in the <acronym title="HyperText Markup Language">HTML</acronym>
4.01 specification ([<a href="#ref_html4">HTML4</a>], section 14.2.4)
for more details.</p>

<h4 id="s1.3.2">1.3.2. Script and Events</h4>

<p>The <code>script</code> and <code>noscript</code> elements are
not supported. Usually small devices have limited memory and
<acronym title="Central Processing Unit">CPU</acronym> power.
Execution of script programs may not be supported. Contents
should be readable even if scripts are not executed.</p>

<p>Event handler attributes used to invoke script programs are not supported.
Events are device dependent. An incoming-call event is unlikely to happen
in a television. A generic event handling mechanism would be more appropriate
than hardwiring the event names in the document type definition.</p>

<h4 id="s1.3.3">1.3.3. Presentation</h4>

<p>Many simple Web clients cannot display fonts other than monospace.
Bi-directional text, bold faced font, and other text extension elements
are not supported.</p>

<p>It is recommended that style sheets be used to create a presentation
that is appropriate for the device.</p>

<h4 id="s1.3.4">1.3.4. Forms</h4>

<p><a href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_sformsmodule">Basic
<acronym title="Extensible HyperText Markup Language">XHTML</acronym>
forms</a> ([<a href="#ref_xhtmlmod">XHTMLMOD</a>], section 5.5.1) are
supported. Since only devices with a local file system can take advantage
of file and image input types in forms, they are not included in the basic
forms. Also, content developers should keep in mind that users may not be
able to input many characters from some devices (<acronym
title="exempli gratia" xml:lang="lt">e.g.</acronym> from a mobile phone).</p>

<h4 id="s1.3.5">1.3.5. Tables</h4>

<p><a href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_simpletablemodule">Basic
<acronym title="Extensible HyperText Markup Language">XHTML</acronym>
tables</a> ([<a href="#ref_xhtmlmod">XHTMLMOD</a>], section 5.6.1) are
supported, but tables can be difficult to display on small devices.
It is recommended that content developers follow
the Web Content Accessibility Guidelines 1.0 for
<a href="http://www.w3.org/TR/1999/WAI-WEBCONTENT-19990505/#gl-table-markup"
>creating accessible tables</a>
([<a href="#ref_wai-webcontent">WCAG10</a>], Guideline 5).
Note that in the Basic Tables Module, nesting of tables is prohibited.</p>

<h4 id="s1.3.6">1.3.6. Frames</h4>

<p>Frames are not supported. Frames depend on a screen interface and
may not be applicable to some small appliances like phones, pagers,
and watches.</p>


<h2 id="s_conformance">2. Conformance</h2>

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

<h3 id="s2.1">2.1. Document Conformance</h3>

<p>A Conforming <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic
document is a document that requires only the facilities described as
mandatory in this specification. Such a document must meet all of
the following criteria:</p>

<ol>
  <li>The document must conform to the constraints expressed in
    <a href="#a_dtd">Appendix B</a>.</li>
  <li>The root element of the document must be <code>&lt;html&gt;</code>.</li>
  <li>The name of the default namespace on the root element must be the
    <acronym title="Extensible HyperText Markup Language">XHTML</acronym>
    namespace name, <code>http://www.w3.org/1999/xhtml</code>.</li>
  <li>There must be a DOCTYPE declaration in the document prior to
    the root element.
    If present, the public identifier included in the DOCTYPE declaration must
    reference the <acronym title="Document Type Definition">DTD</acronym> found
    in <a href="#a_dtd">Appendix B</a> using its Formal Public Identifier.
    The system identifier may be modified appropriately.
<pre class="dtd">
&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML Basic 1.0//EN"
    "http://www.w3.org/TR/xhtml-basic/xhtml-basic10.dtd">
</pre>
  </li>
  <li>The <acronym title="Document Type Definition">DTD</acronym> subset
    must not be used to override any parameter entities in the
    <acronym title="Document Type Definition">DTD</acronym>.</li>
</ol>

<h3 id="s2.2">2.2. User Agent Conformance</h3>

<p>The user agent must conform to the
"<a href="http://www.w3.org/TR/2000/REC-xhtml1-20000126/#uaconf">User Agent Conformance</a>"
section of the <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> 1.0 specification
([<a href="#ref_xhtml1">XHTML1</a>], section 3.2).</p>


<h2 id="s_xhtmlmodules">3.
The <acronym title="Extensible HyperText Markup Language">XHTML</acronym>
Basic Document Type</h2>

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

<p>The <acronym title="Extensible HyperText Markup Language">XHTML</acronym>
Basic document type is defined as a set of <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> modules.
All <acronym title="Extensible HyperText Markup Language">XHTML</acronym>
modules are defined in the "<cite>Modularization of <acronym
title="Extensible HyperText Markup Language">XHTML</acronym></cite>"
specification [<a href="#ref_xhtmlmod">XHTMLMOD</a>].</p>

<p><acronym title="Extensible HyperText Markup Language">XHTML</acronym>
Basic consists of the following <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> modules:</p>

<dl>
  <dt>Structure Module*</dt>
  <dd><code>body, head, html, title</code></dd>
  <dt><a>Text Module</a>*</dt>
  <dd><code>abbr, acronym, address, blockquote, br, cite, code, dfn, div, em,
    h1, h2, h3, h4, h5, h6, kbd, p, pre, q, samp, span, strong, var</code></dd>
  <dt>Hypertext Module*</dt>
  <dd><code>a</code></dd>
  <dt>List Module*</dt>
  <dd><code>dl, dt, dd, ol, ul, li</code></dd>
  <dt>Basic Forms Module</dt>
  <dd><code>form, input, label, select, option, textarea</code></dd>
  <dt>Basic Tables Module</dt>
  <dd><code>caption, table, td, th, tr</code></dd>
  <dt>Image Module</dt>
  <dd><code>img</code></dd>
  <dt>Object Module</dt>
  <dd><code>object, param</code></dd>
  <dt>Metainformation Module</dt>
  <dd><code>meta</code></dd>
  <dt>Link Module</dt>
  <dd><code>link</code></dd>
  <dt>Base Module</dt>
  <dd><code>base</code></dd>
</dl>

<p><em>(*) = This module is a required <a href=
"http://www.w3.org/TR/xhtml-modularization/conformance.html#s_conform_document_type"
>XHTML Host Language</a> module.</em></p>

<p>An <acronym title="Extensible Markup Language">XML</acronym> 1.0
<acronym title="Document Type Definition">DTD</acronym> is available in
<a href="#a_dtd">Appendix B.</a></p>

<div class="note">
<p><strong>NOTE:</strong>
Since the <acronym title="HyperText Markup Language">HTML</acronym>
event handler attributes are not included in <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic,
form controls outside forms may not function as expected by the user.</p>
</div>


<h2 id="s_howtouse">4. How to Use <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic</h2>

<p>Although <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic can
be used as it is - a simple <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> language
with text, links, and images - the intention of its simple design is
for use as a host language. A host language can contain a mix of
vocabularies all rolled into one document type. It is natural that
<acronym title="Extensible HyperText Markup Language">XHTML</acronym> is
the host language, since that is what most Web developers are used to.</p>

<p>When markup from other languages is added to <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic,
the resulting document type will be an extension of <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic.
Content developers can develop for <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic or
take advantage of the extensions. The goal of
<acronym title="Extensible HyperText Markup Language">XHTML</acronym>
Basic is to serve as a common language supported by various kinds of
user agents.</p>


<h2 id="s_acknowledgements">5. Acknowledgements</h2>

<p>This specification was prepared by
the <acronym title="World Wide Web Consortium">W3C</acronym>
<acronym title="HyperText Markup Language">HTML</acronym> Working Group.
The members were:</p>

<ul>
<li>Steven Pemberton, <acronym title="Centrum voor Wiskunde en Informatica"
xml:lang="nl">CWI</acronym> (<acronym
title="HyperText Markup Language">HTML</acronym> Working Group Chair)</li>
<li>Robert Adams, Intel (until November 2000)</li>
<li>Murray Altheim, Sun Microsystems</li>
<li>Takuya Asada, <acronym title="World Wide Web Consortium">W3C</acronym>
(until October 2000)</li>
<li>Daniel Austin, Mozquito Technologies</li>
<li>Mark Baker, Sun Microsystems</li>
<li>Wayne Carr, Intel</li>
<li>Tantek &#199;elik, Microsoft</li>
<li>Andrew W. Donoho,
<acronym title="International Business Machines">IBM</acronym></li>
<li>Herman Elenbaas, Philips Electronics</li>
<li>Beth Epperson, Netscape/<acronym title="America Online">AOL</acronym></li>
<li>Masayasu Ishikawa, <acronym title="World Wide Web Consortium">W3C</acronym>
(<acronym title="HyperText Markup Language">HTML</acronym> Activity Lead)</li>
<li>Shin'ichi Matsui, Panasonic</li>
<li>Shane McCarron, Applied Testing and Technology</li>
<li>Ann Navarro, WebGeek, <abbr title="Incorporated">Inc.</abbr></li>
<li>Dave Raggett,
<acronym title="World Wide Web Consortium">W3C</acronym>/Openwave Systems</li>
<li>Sebastian Schnitzenbaumer, Mozquito Technologies
(until September 2000)</li>
<li>Peter Stark, Ericsson</li>
<li>Michel Suignard, Microsoft</li>
<li>Markku Vartiainen, Openwave Systems</li>
<li>Jeremy Wadsworth, Quark <abbr title="Incorporated">Inc.</abbr></li>
<li>Malte Wedel, Mozquito Technologies</li>
<li>Linda Welsh, Intel</li>
<li>Ted Wugofski, Openwave Systems</li>
</ul>

<p>Thanks to Gary Adams (Sun Microsystems), Jonny Axelsson (Metastasis design),
Peter Chen (Philips), Dan Connolly
(<acronym title="World Wide Web Consortium">W3C</acronym>),
John Cowan (Reuters), Martin J. D&#252;rst
(<acronym title="World Wide Web Consortium">W3C</acronym>),
Johan Hjelm (Ericsson), Ian Jacobs
(<acronym title="World Wide Web Consortium">W3C</acronym>),
Susan Lesch (<acronym title="World Wide Web Consortium">W3C</acronym>),
Louis Theran (Nokia), Quinton Zondervan (Lotus), members of 
the <acronym title="World Wide Web Consortium">W3C</acronym>
Mobile Access Interest Group,
the <acronym title="World Wide Web Consortium">W3C</acronym>
Synchronized Multimedia Working Group,
the <acronym title="World Wide Web Consortium">W3C</acronym>
<acronym title="Web Accessibility Initiative">WAI</acronym>
Protocols and Formats Working Group,
and the <acronym title="Wireless Application Protocol">WAP</acronym> Forum,
for contributing, reviewing and commenting on this document.</p>


<h2 id="a_refs">A. References</h2>

<h3 id="a_normrefs">A.1. Normative References</h3>

<dl>
  <dt class="normref" id="ref_html4">[HTML4]</dt>
  <dd>"<cite><a href="http://www.w3.org/TR/1999/REC-html401-19991224"
    ><acronym title="HyperText Markup Language">HTML</acronym> 4.01
    Specification</a></cite>",
    <acronym title="World Wide Web Consortium">W3C</acronym> Recommendation, D.
    Raggett, A. Le&#160;Hors, I. Jacobs, <abbr title="editors">eds.</abbr>,
    24 December 1999. Available at:
    <a href="http://www.w3.org/TR/1999/REC-html401-19991224"
    >http://www.w3.org/TR/1999/REC-html401-19991224</a><br />
    The latest version is available at: <a href="http://www.w3.org/TR/html4"
    >http://www.w3.org/TR/html4</a>
  </dd>
  <dt class="normref" id="ref_xhtml1">[XHTML1]</dt>
  <dd>"<cite><a href="http://www.w3.org/TR/2000/REC-xhtml1-20000126"
    ><acronym title="Extensible HyperText Markup Language">XHTML</acronym> 1.0:
    The Extensible HyperText Markup Language - A Reformulation of
    <acronym title="HyperText Markup Language">HTML</acronym> 4 in
    <acronym title="Extensible Markup Language">XML</acronym> 1.0</a></cite>",
    <acronym title="World Wide Web Consortium">W3C</acronym> Recommendation,
    Steven Pemberton et al., 26 January 2000. Available at:
    <a href="http://www.w3.org/TR/2000/REC-xhtml1-20000126"
    >http://www.w3.org/TR/2000/REC-xhtml1-20000126</a><br />
    The latest version is available at:
    <a href="http://www.w3.org/TR/xhtml1">http://www.w3.org/TR/xhtml1</a>
  </dd>
  <dt class="normref" id="ref_xhtmlmod">[XHTMLMOD]</dt>
  <dd>"<cite><a
    href="http://www.w3.org/TR/2000/CR-xhtml-modularization-20001020"
    >Modularization of <acronym
    title="Extensible HyperText Markup Language">XHTML</acronym></a></cite>",
    <acronym title="World Wide Web Consortium">W3C</acronym> Candidate
    Recommendation, R. Adams, M. Altheim, F. Boumphrey, S. Dooley, S. McCarron,
    S. Schnitzenbaumer, T. Wugofski, <abbr title="editors">eds.</abbr>,
    20 October 2000. Available at:
    <a href="http://www.w3.org/TR/2000/CR-xhtml-modularization-20001020"
    >http://www.w3.org/TR/2000/CR-xhtml-modularization-20001020</a><br />
    The latest version is available at:
    <a href="http://www.w3.org/TR/xhtml-modularization"
    >http://www.w3.org/TR/xhtml-modularization</a>
  </dd>
  <dt class="normref" id="ref_xml">[XML]</dt>
  <dd>"<cite><a href="http://www.w3.org/TR/2000/REC-xml-20001006"
    >Extensible Markup Language (<acronym
    title="Extensible Markup Language">XML</acronym>) 1.0
    (Second Edition)</a></cite>",
    <acronym title="World Wide Web Consortium">W3C</acronym> Recommendation,
    T. Bray, J. Paoli, C. M. Sperberg-McQueen, E. Maler,
    <abbr title="editors">eds.</abbr>, 6 October 2000. Available at:
    <a href="http://www.w3.org/TR/2000/REC-xml-20001006"
    >http://www.w3.org/TR/2000/REC-xml-20001006</a><br />
    The latest version is available at:
    <a href="http://www.w3.org/TR/REC-xml">http://www.w3.org/TR/REC-xml</a>
  </dd>
</dl>

<h3 id="a_inforefs">A.2. Informative References</h3>

<dl>
  <dt id="ref_chtml">[CHTML]</dt>
  <dd>"<cite><a
    href="http://www.w3.org/TR/1998/NOTE-compactHTML-19980209"
    >Compact <acronym title="HyperText Markup Language">HTML</acronym>
    for Small Information Appliances</a></cite>",
    <acronym title="World Wide Web Consortium">W3C</acronym> Note,
    T. Kamada, 9 February 1998. Available at:
    <a href="http://www.w3.org/TR/1998/NOTE-compactHTML-19980209"
    >http://www.w3.org/TR/1998/NOTE-compactHTML-19980209</a>
  </dd>
  <dt id="ref_mhtml">[GUIDELINES]</dt>
  <dd>"<cite><a href="http://www.w3.org/TR/1999/NOTE-html40-mobile-19990315"
    ><acronym title="HyperText Markup Language">HTML</acronym> 4.0
    Guidelines for Mobile Access</a></cite>,
    <acronym title="World Wide Web Consortium">W3C</acronym> Note,
    T. Kamada, T. Asada, M. Ishikawa, S. Matsui,
    <abbr title="editors">eds.</abbr>, 15 March 1999. Available at:
    <a href="http://www.w3.org/TR/1999/NOTE-html40-mobile-19990315"
    >http://www.w3.org/TR/1999/NOTE-html40-mobile-19990315</a><br />
    The latest version is available at:
    <a href="http://www.w3.org/TR/NOTE-html40-mobile"
    >http://www.w3.org/TR/NOTE-html40-mobile</a>
  </dd>
  <dt id="ref_wai-webcontent">[WCAG10]</dt>
  <dd>"<cite><a href="http://www.w3.org/TR/1999/WAI-WEBCONTENT-19990505"
    >Web Content Accessibility Guidelines 1.0</a></cite>",
    <acronym title="World Wide Web Consortium">W3C</acronym> Recommendation,
    W. Chisholm, G. Vanderheiden, I. Jacobs, <abbr title="editors">eds.</abbr>,
    5 May 1999. Available at:
    <a href="http://www.w3.org/TR/1999/WAI-WEBCONTENT-19990505"
    >http://www.w3.org/TR/1999/WAI-WEBCONTENT-19990505</a><br />
    The latest version is available at:
    <a href="http://www.w3.org/TR/WCAG10"
    >http://www.w3.org/TR/WCAG10</a>
  </dd>
  <dt id="ref_wml">[WML]</dt>
  <dd>"<cite>Wireless Markup Language Specification</cite>",
    <acronym title="Wireless Application Protocol">WAP</acronym> Forum
    <abbr title="Limited">Ltd</abbr>. Available from
    <a href="http://www.wapforum.org/what/technical.htm"
    >http://www.wapforum.org/what/technical.htm</a>
  </dd>
</dl>


<h2 id="a_dtd">B.
<acronym title="Extensible HyperText Markup Language">XHTML</acronym> Basic
Document Type Definition</h2>

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

<h3 id="a_catalog">B.1.
<acronym title="Standard Generalized Markup Language">SGML</acronym> Open
Catalog Entry for <acronym
title="Extensible HyperText Markup Language">XHTML</acronym> Basic</h3>

<p>This section contains the <acronym
title="Standard Generalized Markup Language">SGML</acronym> Open
Catalog-format definition of the <acronym
title="Extensible HyperText Markup Language">XHTML</acronym>
Basic <acronym title="Formal Public Identifier">FPI</acronym>.</p>

<pre class="dtd">
-- .......................................................................... --
-- File catalog  ............................................................ --

--  XHTML Basic Catalog Data File

    Revision:  $Id: xhtml-basic.xml,v 1.2 2002/05/20 08:14:17 jstrachan Exp $ SMI

    See "Entity Management", SGML Open Technical Resolution 9401 for detailed
    information on supplying and using catalog data. This document is available
    from OASIS at URL:

        &lt;http://www.oasis-open.org/html/tr9401.html>
--

-- .......................................................................... --
-- SGML declaration associated with XML  .................................... --

OVERRIDE YES

SGMLDECL "xml1.dcl"

-- :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: --

-- XHTML Basic DTD modular driver file  ..................................... --

PUBLIC "-//W3C//DTD XHTML Basic 1.0//EN"                       "xhtml-basic10.dtd"

-- XHTML Basic framework module ............................................. --

PUBLIC "-//W3C//ENTITIES XHTML Basic 1.0 Document Model 1.0//EN"  "xhtml-basic10-model-1.mod"


-- End of catalog data  ..................................................... --
-- .......................................................................... --
</pre>

<h3 id="a_driver">B.2.
<acronym title="Extensible HyperText Markup Language">XHTML</acronym>
Basic Driver</h3>

<p>This section contains the driver for
the <acronym title="Extensible HyperText Markup Language">XHTML</acronym>
Basic document type implementation as
an <abbr title="Extensible Markup Language">XML</abbr>
<acronym title="Document Type Definition">DTD</acronym>. It relies upon
<acronym title="Extensible HyperText Markup Language">XHTML</acronym> module
implementations defined in [<a href="#ref_xhtmlmod">XHTMLMOD</a>].</p>

<pre class="dtd">
&lt;!-- XHTML Basic 1.0 DTD  ...................................................... -->
&lt;!-- file: xhtml-basic10.dtd -->

&lt;!-- XHTML Basic 1.0 DTD

     This is XHTML Basic, a proper subset of XHTML.

     The Extensible HyperText Markup Language (XHTML)
     Copyright 1998-2000 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 the XHTML Basic 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;mailto:altheim@eng.sun.com>
                    Peter Stark       &lt;mailto:Peter.Stark@ecs.ericsson.se>
        Revision:   $Id: xhtml-basic.xml,v 1.2 2002/05/20 08:14:17 jstrachan Exp $ SMI

-->
&lt;!-- This is the driver file for version 1.0 of the XHTML Basic DTD.

     This DTD is identified by the PUBLIC and SYSTEM identifiers:

     PUBLIC: "-//W3C//DTD XHTML Basic 1.0//EN"
     SYSTEM: "http://www.w3.org/TR/xhtml-basic/xhtml-basic10.dtd"
-->
&lt;!ENTITY % XHTML.version  "-//W3C//DTD XHTML Basic 1.0//EN" >

&lt;!-- Use this URI to identify the default namespace:

         "http://www.w3.org/1999/xhtml"

     See the Qualified Names module for information
     on the use of namespace prefixes in the DTD.
-->
&lt;!ENTITY % NS.prefixed "IGNORE" >
&lt;!ENTITY % XHTML.prefix  "" >

&lt;!-- Reserved for use with the XLink namespace:
-->
&lt;!ENTITY % XLINK.xmlns "" >
&lt;!ENTITY % XLINK.xmlns.attrib "" >

&lt;!-- For example, if you are using XHTML Basic 1.0 directly, use
     the FPI in the DOCTYPE declaration, with the xmlns attribute
     on the document element to identify the default namespace:

         &lt;?xml version="1.0"?>
         &lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML Basic 1.0//EN"
             "http://www.w3.org/TR/xhtml-basic/xhtml-basic10.dtd" >
         &lt;html xmlns="http://www.w3.org/1999/xhtml"
               xml:lang="en" >
         ...
         &lt;/html>
-->

&lt;!-- reserved for future use with document profiles -->
&lt;!ENTITY % XHTML.profile  "" >

&lt;!-- Bidirectional Text features
     This feature-test entity is used to declare elements
     and attributes used for bidirectional text support.
-->
&lt;!ENTITY % XHTML.bidi  "IGNORE" >

&lt;?doc type="doctype" role="title" { XHTML Basic 1.0 } ?>

&lt;!-- :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -->

&lt;!ENTITY % xhtml-events.module   "IGNORE" >
&lt;!ENTITY % xhtml-bdo.module      "%XHTML.bidi;" >

&lt;!ENTITY % xhtml-model.mod
     PUBLIC "-//W3C//ENTITIES XHTML Basic 1.0 Document Model 1.0//EN"
            "xhtml-basic10-model-1.mod" >

&lt;!ENTITY % xhtml-framework.mod
     PUBLIC "-//W3C//ENTITIES XHTML Modular Framework 1.0//EN"
            "xhtml-framework-1.mod" >
%xhtml-framework.mod;

&lt;!ENTITY % pre.content
     "( #PCDATA
      | %InlStruct.class;
      %InlPhras.class;
      %Anchor.class;
      %Inline.extra; )*"
>

&lt;!ENTITY % xhtml-text.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Text 1.0//EN"
            "xhtml-text-1.mod" >
%xhtml-text.mod;

&lt;!ENTITY % xhtml-hypertext.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Hypertext 1.0//EN"
            "xhtml-hypertext-1.mod" >
%xhtml-hypertext.mod;

&lt;!ENTITY % xhtml-list.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Lists 1.0//EN"
            "xhtml-list-1.mod" >
%xhtml-list.mod;

&lt;!-- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -->

&lt;!-- Image Module  ............................................... -->
&lt;!ENTITY % xhtml-image.module "INCLUDE" >
&lt;![%xhtml-image.module;[
&lt;!ENTITY % xhtml-image.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Images 1.0//EN"
            "xhtml-image-1.mod" >
%xhtml-image.mod;]]&gt;

&lt;!-- Tables Module ............................................... -->
&lt;!ENTITY % xhtml-table.module "INCLUDE" >
&lt;![%xhtml-table.module;[
&lt;!ENTITY % xhtml-table.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Basic Tables 1.0//EN"
            "xhtml-basic-table-1.mod" >
%xhtml-table.mod;]]&gt;

&lt;!-- Forms Module  ............................................... -->
&lt;!ENTITY % xhtml-form.module "INCLUDE" >
&lt;![%xhtml-form.module;[
&lt;!ENTITY % xhtml-form.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Basic Forms 1.0//EN"
            "xhtml-basic-form-1.mod" >
%xhtml-form.mod;]]&gt;

&lt;!-- Link Element Module  ........................................ -->
&lt;!ENTITY % xhtml-link.module "INCLUDE" >
&lt;![%xhtml-link.module;[
&lt;!ENTITY % xhtml-link.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Link Element 1.0//EN"
            "xhtml-link-1.mod" >
%xhtml-link.mod;]]&gt;

&lt;!-- Document Metainformation Module  ............................ -->
&lt;!ENTITY % xhtml-meta.module "INCLUDE" >
&lt;![%xhtml-meta.module;[
&lt;!ENTITY % xhtml-meta.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Metainformation 1.0//EN"
            "xhtml-meta-1.mod" >
%xhtml-meta.mod;]]&gt;

&lt;!-- Base Element Module  ........................................ -->
&lt;!ENTITY % xhtml-base.module "INCLUDE" >
&lt;![%xhtml-base.module;[
&lt;!ENTITY % xhtml-base.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Base Element 1.0//EN"
            "xhtml-base-1.mod" >
%xhtml-base.mod;]]&gt;

&lt;!-- Param Element Module  ....................................... -->
&lt;!ENTITY % xhtml-param.module "INCLUDE" >
&lt;![%xhtml-param.module;[
&lt;!ENTITY % xhtml-param.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Param Element 1.0//EN"
            "xhtml-param-1.mod" >
%xhtml-param.mod;]]&gt;

&lt;!-- Embedded Object Module  ..................................... -->
&lt;!ENTITY % xhtml-object.module "INCLUDE" >
&lt;![%xhtml-object.module;[
&lt;!ENTITY % xhtml-object.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Embedded Object 1.0//EN"
            "xhtml-object-1.mod" >
%xhtml-object.mod;]]&gt;

&lt;!ENTITY % xhtml-struct.mod
     PUBLIC "-//W3C//ELEMENTS XHTML Document Structure 1.0//EN"
            "xhtml-struct-1.mod" >
%xhtml-struct.mod;

&lt;!-- end of XHTML Basic 1.0 DTD  ........................................... -->
</pre>

<h3 id="a_customization">B.3.
<acronym title="Extensible HyperText Markup Language">XHTML</acronym>
Basic Customizations</h3>

<p>An <acronym title="Extensible HyperText Markup Language">XHTML</acronym>
Family Document Type (such as
<acronym title="Extensible HyperText Markup Language">XHTML</acronym> Basic)
must define the content model that it uses. This is done through a separate
content model module that is instantiated by the
<acronym title="Extensible HyperText Markup Language">XHTML</acronym>
Modular Framework. The content model module and the
<acronym title="Extensible HyperText Markup Language">XHTML</acronym> Basic
Driver (above) work together to customize the module implementations to
the document type's specific requirements. The content model module for
<acronym title="Extensible HyperText Markup Language">XHTML</acronym> Basic
is defined below:</p>

<pre class="dtd">
&lt;!-- ....................................................................... -->
&lt;!-- XHTML Basic 1.0 Document Model Module  .................................... -->
&lt;!-- file: xhtml-basic10-model-1.mod

     This is XHTML Basic, a proper subset of XHTML.
     Copyright 1998-2000 W3C (MIT, INRIA, Keio), All Rights Reserved.
     Revision: $Id: xhtml-basic.xml,v 1.2 2002/05/20 08:14:17 jstrachan Exp $ SMI

     This DTD module is identified by the PUBLIC and SYSTEM identifiers:

       PUBLIC "-//W3C//ENTITIES XHTML Basic 1.0 Document Model 1.0//EN"
       SYSTEM "http://www.w3.org/TR/xhtml-basic/xhtml-basic10-model-1.mod"

     Revisions:
     (none)
     ....................................................................... -->

&lt;!-- XHTML Basic Document Model

     This module describes the groupings of elements that make up
     common content models for XHTML elements.
-->

&lt;!-- Optional Elements in head  .............. -->

&lt;!ENTITY % HeadOpts.mix
     "( %meta.qname; | %link.qname; | %object.qname; )*" >

&lt;!-- Miscellaneous Elements  ................. -->

&lt;!ENTITY % Misc.class "" >

&lt;!-- Inline Elements  ........................ -->

&lt;!ENTITY % InlStruct.class "%br.qname; | %span.qname;" >

&lt;!ENTITY % InlPhras.class
     "| %em.qname; | %strong.qname; | %dfn.qname; | %code.qname;
      | %samp.qname; | %kbd.qname; | %var.qname; | %cite.qname;
      | %abbr.qname; | %acronym.qname; | %q.qname;" >

&lt;!ENTITY % InlPres.class "" >

&lt;!ENTITY % I18n.class "" >

&lt;!ENTITY % Anchor.class "| %a.qname;" >

&lt;!ENTITY % InlSpecial.class "| %img.qname; | %object.qname;" >

&lt;!ENTITY % InlForm.class
     "| %input.qname; | %select.qname; | %textarea.qname;
      | %label.qname;"
>

&lt;!ENTITY % Inline.extra "" >

&lt;!ENTITY % Inline.class
     "%InlStruct.class;
      %InlPhras.class;
      %Anchor.class;
      %InlSpecial.class;
      %InlForm.class;
      %Inline.extra;"
>

&lt;!ENTITY % InlNoAnchor.class
     "%InlStruct.class;
      %InlPhras.class;
      %InlSpecial.class;
      %InlForm.class;
      %Inline.extra;"
>

&lt;!ENTITY % InlNoAnchor.mix
     "%InlNoAnchor.class;
      %Misc.class;"
>

&lt;!ENTITY % Inline.mix
     "%Inline.class;
      %Misc.class;"
>

&lt;!-- Block Elements  ......................... -->

&lt;!ENTITY % Heading.class
     "%h1.qname; | %h2.qname; | %h3.qname;
      | %h4.qname; | %h5.qname; | %h6.qname;"
>
&lt;!ENTITY % List.class  "%ul.qname; | %ol.qname; | %dl.qname;" >

&lt;!ENTITY % Table.class "| %table.qname;" >

&lt;!ENTITY % Form.class  "| %form.qname;" >

&lt;!ENTITY % BlkStruct.class "%p.qname; | %div.qname;" >

&lt;!ENTITY % BlkPhras.class
     "| %pre.qname; | %blockquote.qname; | %address.qname;"
>

&lt;!ENTITY % BlkPres.class "" >

&lt;!ENTITY % BlkSpecial.class
     "%Table.class;
      %Form.class;"
>

&lt;!ENTITY % Block.extra "" >

&lt;!ENTITY % Block.class
     "%BlkStruct.class;
      %BlkPhras.class;
      %BlkSpecial.class;
      %Block.extra;"
>

&lt;!ENTITY % Block.mix
     "%Heading.class;
      | %List.class;
      | %Block.class;
      %Misc.class;"
>

&lt;!-- All Content Elements  ................... -->

&lt;!-- declares all content except tables
-->
&lt;!ENTITY % FlowNoTable.mix
     "%Heading.class;
      | %List.class;
      | %BlkStruct.class;
      %BlkPhras.class;
      %Form.class;
      %Block.extra;
      | %Inline.class;
      %Misc.class;"
>

&lt;!ENTITY % Flow.mix
     "%Heading.class;
      | %List.class;
      | %Block.class;
      | %Inline.class;
      %Misc.class;"
>

&lt;!-- end of xhtml-basic10-model-1.mod -->
</pre>
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