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<h1>XHTML+SMIL Profile</h1>

<h2>W3C Note 31 January 2002</h2>
<dl>
  <dt>This version</dt>
    <dd><a
      href="http://www.w3.org/TR/2002/NOTE-XHTMLplusSMIL-20020131/">http://www.w3.org/TR/2002/NOTE-XHTMLplusSMIL-20020131/</a></dd>
  <dt>Latest version</dt>
    <dd><a
      href="http://www.w3.org/TR/XHTMLplusSMIL/ ">http://www.w3.org/TR/XHTMLplusSMIL/</a></dd>
  <dt>Previous version</dt>
    <dd><a
      href="http://www.w3.org/TR/2001/WD-XHTMLplusSMIL-20010807/">http://www.w3.org/TR/2001/WD-XHTMLplusSMIL-20010807/</a></dd>
  <dt>Editors:</dt>
    <dd>Debbie Newman (<a
      href="mailto:debbien@microsoft.com">debbien@microsoft.com</a>),
      Microsoft <br>
      Aaron Patterson, (<a
      href="mailto:a-apatt@microsoft.com">a-apatt@microsoft.com</a>),
      Microsoft</dd>
    <dd>Patrick Schmitz (<a
      href="mailto:cogit@ludicrum.org">cogit@ludicrum.org</a>), Invited
    Expert</dd>
</dl>

<p class="copyright"><a
href="http://www.w3.org/Consortium/Legal/ipr-notice-20000612#Copyright">Copyright</a>
©2001, 2002 <a href="http://www.w3.org/"><abbr
title="World Wide Web Consortium">W3C</abbr></a><sup>®</sup> (<a
href="http://www.lcs.mit.edu/"><abbr
title="Massachusetts Institute of   Technology">MIT</abbr></a>, <a
href="http://www.inria.fr/"> <abbr lang="fr"
title="Institut National de   Recherche en Informatique et   Automatique">
INRIA</abbr></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>

<p></p>
<hr title="Separator from Header">

<h2>Abstract</h2>

<p>The XHTML+SMIL profile defines a set of XHTML abstract modules that
support a subset of the SMIL 2.0 specification.  It includes functionality
from SMIL 2.0 modules providing support for animation, content control, media
objects, timing and synchronization, and transition effects. The profile also
integrates SMIL 2.0 features directly with XHTML and CSS, describing how SMIL
can be used to manipulate XHTML and CSS features. Additional semantics are
defined for some XHTML elements and CSS properties.</p>

<p>The profile is designed for Web clients that support XHTML+SMIL markup
validating to this profile's implementation DTD. The document type definition
(DTD) and XML Schema <a href="#ref-XSCHEMA">[XSCHEMA]</a> are implemented
using SMIL modules as defined in "Modularization of SMIL" <a
href="#ref-SMIL-MOD-NOTE">[SMIL-MOD-NOTE]</a>, and "The SMIL 20 Modules" <a
href="#ref-SMIL20-MOD">[SMIL20-MOD]</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 W3C.</em></p>

<p>This document is a Note submitted to the W3C with the intention that it be
used as a basis to further the work of integrating SMIL functionality into
XHTML.</p>

<p>This Note has been produced by the <a
href="http://www.w3.org/AudioVideo/Group/">SYMM Working Group</a> (<em><a
href="http://cgi.w3.org/MemberAccess/">members only</a></em>), and reflects
the opinions of some members of that Working Group.</p>

<p>This specification is a revision of the W3C Working Draft <a
href="http://www.w3.org/TR/2001/WD-XHTMLplusSMIL-20010807/">XHTML+SMIL
Profile</a> available in the early phase but removed from the SMIL2.0
specification.</p>

<p>The authors welcome comments on this document, but they do not guarantee a
reply or any further action. Please send comments to <a
href="mailto:www-smil@w3.org">www-smil@w3.org</a>. The archive of public
comments is available at <a
href="http://lists.w3.org/Archives/Public/www-smil/">http://lists.w3.org/Archives/Public/www-smil/</a>.
This document may be updated or added to based on implementation experience,
but no commitment is made by the W3C, or any of its members, regarding future
updates.<br>
</p>

<p>This document is a Note made available by the W3C for discussion only.
Publication of this Note by W3C indicates no endorsement by W3C or the W3C
Team, or any W3C Members. A list of current W3C technical reports and
publications, including Working Drafts and Notes, can be found at <a
href="http://www.w3.org/TR">http://www.w3.org/TR</a> .</p>

<p></p>

<p></p>
<hr>

<h2 id="TOC">Table of Contents</h2>
<ul>
  <li><a href="#HTML-SMIL-ProfileNS-Intro">Introduction</a></li>
  <li><a href="#HTML-SMIL-ProfileNS-NormDef">Normative Definition of
    XHTML+SMIL</a></li>
  <li><a href="#XHTML-SMIL-Profile">XHTML+SMIL Profile</a></li>
  <li><a href="#Animation-Module">Animation Module</a></li>
  <li><a href="#Content-Control-Module">Content Control Module</a></li>
  <li><a href="#Media-Module">Media Object Module</a></li>
  <li><a href="#Timing-Synchronization-Module">Timing and Synchronization
    Module</a></li>
  <li><a href="#Time-Manipulations">Time Manipulations Module</a></li>
  <li><a href="#Transition-Effects-Module">Transition Effects Module</a></li>
  <li><a href="#HTML-SMIL-ProfileNS-AppendixDTD">Appendix A: Document Type
    Definition</a></li>
  <li><a href="#AppendixB">Appendix B: References</a></li>
</ul>

<h2 id="Introduction"><a
name="HTML-SMIL-ProfileNS-Intro"></a>1-Introduction</h2>

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

<p>This profile describes the SMIL modules that are added to XHTML, and
details the integration issues, including the application of integrated SMIL
modules to CSS styles <a href="#ref-CSS2">[CSS20]</a>. Language integration
is accomplished with a set of XHTML modules using the semantics defined in
XHTML Modularization <a href="#ref-XMOD">[XMOD]</a>. The XHTML+SMIL Profile
adds timing, animation and multimedia functionality to these XHTML elements.
XHTML elements that make up the modules defined in XHTML Modularization <a
href="#ref-XMOD"> [XMOD]</a>  are described in the W3C Recommendation for
HTML 4 <a href="#ref-HTML4"> [HTML4]</a> .</p>

<p>The document type defined by the XHTML+SMIL profile is <a
href="http://www.w3.org/TR/xhtml-modularization/conformance.html#s_conform_document_type">
XHTML Host language document type</a> conformant.</p>

<h3 id="Motivation">1.1-Motivation and applications</h3>

<p>Using the SMIL timing extensions, any XHTML element on which timing
functionality is supported can be set to appear at a given time, to last for
a specified duration, and to repeat (i.e. loop). Basic timing and
synchronization and functionality is supported with a simple syntax, and more
complex timing constructs can be described. Event-based interactive timing is
also supported. </p>

<p>The Animation and Transition modules provide additional support for
authors to define presentation content that includes motion, style animation,
transition effects and other features commonly found in
presentation/multimedia authoring tools and runtimes.</p>

<p>In order to easily integrate time-based media (e.g. video and audio), the
SMIL media elements are included. SMIL Content control provides elements and
attributes to control alternative (including accessible and
internationalized) content.</p>

<h3 id="Design">1.2-Design Rationale</h3>

<p>This section explains why certain modules of SMIL 2.0 <a
href="#ref-SMIL20">[SMIL20]</a> are not included. The general philosophy is
to use XHTML modules where appropriate, and to include the SMIL modules when
they provide essential enhancements.</p>

<p><strong>Layout Module:</strong> The <a
href="http://www.w3.org/TR/smil20/layout.html"> SMIL 2.0 layout module </a>
is not included. The XHTML/CSS layout model provides layout functionality.</p>

<p><strong>Linking Module:</strong> The <a
href="http://www.w3.org/TR/smil20/extended-linking.html"> SMIL 2.0 linking
module</a> is not included, as XHTML provides linking functionality.</p>

<p><strong>Structure Module:</strong> The <a
href="http://www.w3.org/TR/smil20/structure.html"> SMIL 2.0 structure
module</a> is not included, as the XHTML document is defined to be the host
language, and so provides the equivalent elements and semantics. </p>

<p><strong>Metainformation Module:</strong> The <a
href="http://www.w3.org/TR/smil20/metadata.html"> SMIL 2.0 Metainformation
module</a> is not included, as XHTML provides metadata functionality. </p>

<h2 id="NormDef">2-<a name="HTML-SMIL-ProfileNS-NormDef"></a> Normative
Definition of XHTML+SMIL</h2>

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

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

<p>A <em>conforming</em> XHTML+SMIL 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>It must validate against the XML DTD found in <a
    href="#HTML-SMIL-ProfileNS-AppendixDTD"> Appendix A</a></li>
  <li>The root element of the document must be <span
    class="einst">html</span>.</li>
  <li>The name of the default namespace on the root element must be the XHTML
    namespace name: <code>http://www.w3.org/1999/xhtml</code>.</li>
  <li>If a DOCTYPE declaration is present and includes a public identifier,
    the DOCTYPE declaration must reference the DTD found in <a
    href="#HTML-SMIL-ProfileNS-AppendixDTD"> Appendix A</a> using its Formal
    Public Identifier. The system identifier may be modified appropriately.
    <pre class="dtd">&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+SMIL //EN" "http://www.w3.org/2001/SMIL20/WD/xhtmlplussmil.dtd"&gt;</pre>
  </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/xhtml1/#uaconf">User Agent Conformance</a>"
section of the <acronym title="Extensible HyperText Markup Language">
XHTML</acronym> specification (<a href="#ref-XHTML10">[XHTML10]</a>, section
3.2), the "<a
href="http://www.w3.org/TR/2001/REC-xhtml-modularization-20010410/xhtml-modularization.html#s_conform_user_agent">XHTML
Family User Agent Conformance section of XHTML Modularization</a>" (<a
href="#ref-XMOD">[XMOD]</a> , section 3.5). and the conformance requirements
detailed in the <acronym
title="Synchronized Multimedia Integration Language"> SMIL</acronym> modules
(<a href="#ref-SMIL20">[SMIL20]</a> ) supported by the integration
profile.</p>

<p>The user agent must conform to the following additional user agent
rule:</p>
<ol>
  <li>When the user agent claims to support facilities defined within the
    SMIL 2.0 specifications or required by this specification through
    normative reference, it must do so in ways consistent with the
    facilities' definition.</li>
</ol>

<h3 id="Namespace">2.3-XHTML Namespace Integration</h3>

<p>The default XML namespace of an XHTML+SMIL document is XHTML.  SMIL
elements are included through an additional SMIL namespace declaration:</p>
<pre class="example"><code>&lt;html xmlns="http://www.w3.org/1999/xhtml"</code>
<code>      xmlns:smil="http://www.w3.org/2001/SMIL20"&gt;</code></pre>

<p class="ednote">The name of the unique identifier for the namespace within
the document (in this example, 'smil') is left to the discretion of the
document author.</p>

<h3 id="XHTML-SMIL-Profile">2.4-XHTML+SMIL Profile</h3>

<p>The XHTML functionality in the XHTML+SMIL document type is based upon the
XHTML modules defined in XHTML Modularization <a href="#ref-XMOD">[XMOD]</a>,
and the Ruby Annotation module as defined in <a href="#ref-RUBY">[RUBY]</a>.
In addition, the XHTML+SMIL document type supports the timeline-centric
multimedia features defined by SMIL 2.0. The formal definition of the modules
is not repeated here, but only the extensions introduced with timing. The
notation, terms and document conventions used here are borrowed from XHTML
Modularization <a href="#ref-XMOD"> [XMOD]</a> .</p>

<p>The profile includes the XHTML modules defined in <a
href="#ref-XMOD">[XMOD]</a> and the following SMIL 2.0 modules:</p>
<ul>
  <li><b><a href="http://www.w3.org/TR/smil20/animation.html">Animation</a>
    Functionality</b> <br>
    <a
    href="http://www.w3.org/TR/smil20/animation.html#animationNS-OverviewBasic">BasicAnimation
    Module</a>, <a
    href="http://www.w3.org/TR/smil20/animation.html#animationNS-OverviewSpline">
    SplineAnimation Module</a></li>
</ul>
<ul>
  <li><b><a href="http://www.w3.org/TR/smil20/smil-content.html">Content
    Control</a> Functionality</b> <br>
    <a
    href="http://www.w3.org/TR/smil20/smil-content.html#ContentControlNS-BasicContent">
    BasicContentControl Module</a></li>
</ul>
<ul>
  <li><b><a
    href="http://www.w3.org/TR/smil20/extended-media-object.html">Media
    Object</a> Functionality</b> <br>
    <a
    href="http://www.w3.org/TR/smil20/extended-media-object.html#media-BasicMedia">BasicMedia
    Module</a>, <a
    href="http://www.w3.org/TR/smil20/extended-media-object.html#media-MediaClipping">
    MediaClipping Module</a></li>
</ul>
<ul>
  <li><b><a href="http://www.w3.org/TR/smil20/smil-timing.html">Timing and
    Synchronization</a> Functionality</b> <br>
    <a
    href="http://www.w3.org/TR/smil20/smil-timing.html#Timing-Appendix-Modules">BasicInlineTiming
    Module</a>, <a
    href="http://www.w3.org/TR/smil20/smil-timing.html#Timing-Appendix-Modules">
    BasicTimeContainers Module</a>, <a
    href="http://www.w3.org/TR/smil20/smil-timing.html#Timing-Appendix-Modules">
    EventTiming Module</a>, <a
    href="http://www.w3.org/TR/smil20/smil-timing.html#Timing-Appendix-Modules">
    ExclTimeContainers Module</a>, <a
    href="http://www.w3.org/TR/smil20/smil-timing.html#Timing-Appendix-Modules">
    MultiArcTiming Module</a>, <a
    href="http://www.w3.org/TR/smil20/smil-timing.html#Timing-Appendix-Modules">
    RepeatTiming Module</a>, <a
    href="http://www.w3.org/TR/smil20/smil-timing.html#Timing-Appendix-Modules">
    RestartTiming Module</a>, <a
    href="http://www.w3.org/TR/smil20/smil-timing.html#Timing-Appendix-Modules">
    SyncBehavior Module</a>, <a
    href="http://www.w3.org/TR/smil20/smil-timing.html#Timing-Appendix-Modules">
    SyncbaseTiming Module</a>, <a
    href="http://www.w3.org/TR/smil20/smil-timing.html#Timing-Appendix-Modules">
    SyncMaster Module</a>, <a
    href="http://www.w3.org/TR/smil20/smil-timing.html#Timing-Appendix-Modules">
    TimeContainerAttributes Module</a>, <a
    href="http://www.w3.org/TR/smil20/smil-timing.html#Timing-Appendix-Modules">
    WallclockTiming Module</a>.</li>
</ul>
<ul>
  <li><b><a href="http://www.w3.org/TR/smil20/smil-timemanip.html">Time
    Manipulations</a> Functionality</b> <br>
    <a
    href="http://www.w3.org/TR/smil20/smil-timemanip.html">TimeManipulations
    Module</a></li>
</ul>
<ul>
  <li><b><a
    href="http://www.w3.org/TR/smil20/smil-transitions.html">Transition
    Effects</a> Functionality</b> <br>
    <a
    href="http://www.w3.org/TR/smil20/smil-transitions.html#TransitionEffects-Inline">
    InlineTransitions Module</a></li>
</ul>

<p>In the module descriptions below, reference is made to the "<a
name="Common">Common</a>" attribute set and content sets defined in XHTML
Modularization <a href="#ref-XMOD">[XMOD]</a>.</p>

<h3 id="Animation-Module">2.5-Animation Module</h3>

<p>The <a href="http://www.w3.org/TR/smil20/animation.html">Animation
Module</a> provides a framework for incorporating animation onto a timeline
(a timing model) and a mechanism for composing the effects of multiple
animations (a composition model). The <a
href="http://www.w3.org/TR/smil20/animation.html">Animation Module</a>
defines semantics for the <a
href="http://www.w3.org/TR/smil20/animation.html#edef-animate"> <span
class="einst">animate</span></a>, <a
href="http://www.w3.org/TR/smil20/animation.html#edef-set"> <span
class="einst">set</span></a>, <a
href="http://www.w3.org/TR/smil20/animation.html#edef-animateMotion"> <span
class="einst">animateMotion</span></a>, and <a
href="http://www.w3.org/TR/smil20/animation.html#edef-animateColor"> <span
class="einst">animateColor</span></a> elements, as well as where these
elements may be used.</p>

<p>The syntactic conventions used in this document to describe additions and
modifications to element content sets are borrowed from <a
href="#ref-XMOD">[XMOD]</a>. In particular, the ampersand
<strong>(&amp;)</strong> is used to denote that a module modifies an element
or set of elements with the addition of new attributes or content model
arguments. Additionally, the asterisk <strong>(*)</strong> is used to denote
that new arguments may be used in an existing element's content model. <br>
</p>

<table cellpadding="3" summary="Elements and Attributes for Animation Module"
border="1">
  <thead>
    <tr>
      <th>Elements</th>
      <th>Attributes</th>
      <th>Content Model</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a
        href="http://www.w3.org/TR/smil20/animation.html#edef-animate"><span
        class="einst">animate</span></a></td>
      <td><a href="#Common">Common</a>, <a href="#TimingAttrSet">Timing</a>,
        <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-attributeName">
        <span class="ainst">attributeName</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-attributeType">
        <span class="ainst">attributeType</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-additive">
        <span class="ainst">additive</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-accumulate">
        <span class="ainst">accumulate</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-calcMode">
        <span class="ainst">calcMode</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-values"> <span
        class="ainst">values</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-keyTimes">
        <span class="ainst">keyTimes</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-keySplines">
        <span class="ainst">keySplines</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-from"> <span
        class="ainst">from</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-to"> <span
        class="ainst">to</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-by"> <span
        class="ainst">by</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-targetElement">
        <span class="ainst">targetElement</span></a></td>
      <td class="content">none</td>
    </tr>
    <tr>
      <td><a href="http://www.w3.org/TR/smil20/animation.html#edef-set"><span
        class="einst">set</span></a></td>
      <td><a href="#Common">Common</a>, <a href="#TimingAttrSet">Timing</a>,
        <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-attributeName">
        <span class="ainst">attributeName</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-attributeType">
        <span class="ainst">attributeType</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-to"> <span
        class="ainst">to</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-targetElement">
        <span class="ainst">targetElement</span></a></td>
      <td class="content">none</td>
    </tr>
    <tr>
      <td><a
        href="http://www.w3.org/TR/smil20/animation.html#edef-animateMotion"><span
        class="einst">animateMotion</span></a></td>
      <td><a href="#Common">Common</a>, <a href="#TimingAttrSet">Timing</a>,
        <a href="http://www.w3.org/TR/smil20/animation.html#adef-additive">
        <span class="ainst">additive</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-accumulate">
        <span class="ainst">accumulate</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-calcMode">
        <span class="ainst">calcMode</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-values"> <span
        class="ainst">values</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-keyTimes">
        <span class="ainst">keyTimes</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-keySplines">
        <span class="ainst">keySplines</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-from"> <span
        class="ainst">from</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-to"> <span
        class="ainst">to</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-by"> <span
        class="ainst">by</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-path"> <span
        class="ainst">path</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-origin"> <span
        class="ainst">origin</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-targetElement">
        <span class="ainst">targetElement</span></a></td>
      <td class="content">none</td>
    </tr>
    <tr>
      <td><a
        href="http://www.w3.org/TR/smil20/animation.html#edef-animateColor"><span
        class="einst">animateColor</span></a></td>
      <td><a href="#Common">Common</a>, <a href="#TimingAttrSet">Timing</a>,
        <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-attributeName">
        <span class="ainst">attributeName</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-attributeType">
        <span class="ainst">attributeType</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-additive">
        <span class="ainst">additive</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-accumulate">
        <span class="ainst">accumulate</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-calcMode">
        <span class="ainst">calcMode</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-values"> <span
        class="ainst">values</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-keyTimes">
        <span class="ainst">keyTimes</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-keySplines">
        <span class="ainst">keySplines</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-from"> <span
        class="ainst">from</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-to"> <span
        class="ainst">to</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-by"> <span
        class="ainst">by</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-targetElement">
        <span class="ainst">targetElement</span></a></td>
      <td class="content">none</td>
    </tr>
    <tr>
      <td><a
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-par"><span
        class="einst">par</span></a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-seq"><span
        class="einst">seq</span></a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-excl"><span
        class="einst">excl</span></a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_textmodule">
        Basic Text</a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_hypertextmodule">
        Hypertext</a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_listmodule">
        List</a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_presentationmodule">
        Presentation</a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_tablemodule">
        Tables</a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_imagemodule">
        Image</a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_objectmodule">
        Object</a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_legacymodule">
        Legacy</a><strong>&amp;</strong></td>
      <td> </td>
      <td class="content"><a
        href="http://www.w3.org/TR/smil20/animation.html#edef-animate"><span
        class="einst">animate</span></a><strong>*</strong>, <a
        href="http://www.w3.org/TR/smil20/animation.html#edef-set"><span
        class="einst">set</span></a><strong>*</strong>, <a
        href="http://www.w3.org/TR/smil20/animation.html#edef-animateMotion"><span
        class="einst"> animateMotion</span></a><strong>*</strong>, <a
        href="http://www.w3.org/TR/smil20/animation.html#edef-animateColor">
        <span class="einst">animateColor</span></a><strong>*</strong>,</td>
    </tr>
    <tr>
      <td><a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_appletmodule">Applet</a><strong>&amp;</strong>,
        <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_editmodule">
        Edit</a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_imapmodule">
        Client-side Image Map</a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_servermapmodule">
        Server-side Image Map</a><strong>&amp;</strong></td>
      <td> </td>
      <td class="content"><a
        href="http://www.w3.org/TR/smil20/animation.html#edef-animate"><span
        class="einst">animate</span></a><strong>*</strong>, <a
        href="http://www.w3.org/TR/smil20/animation.html#edef-set"><span
        class="einst">set</span></a><strong>*</strong>, <a
        href="http://www.w3.org/TR/smil20/animation.html#edef-animateColor"><span
        class="einst"> animateColor</span></a><strong>*</strong></td>
    </tr>
    <tr>
      <td><a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_extformsmodule">Forms</a><strong>&amp;</strong>,
        <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_iframemodule">
        IFrame</a><strong>&amp;</strong></td>
      <td> </td>
      <td class="content"><a
        href="http://www.w3.org/TR/smil20/animation.html#edef-animateMotion"><span
        class="einst">animateMotion</span></a><strong>*</strong></td>
    </tr>
  </tbody>
</table>

<p>This module defines the following content sets (element groups for the
purpose of defining content models):</p>
<dl>
  <dt><b>BasicAnimation</b></dt>
    <dd><a
      href="http://www.w3.org/TR/smil20/animation.html#edef-animate"><span
      class="einst">animate</span></a><span class="content"> |</span><a
      href="http://www.w3.org/TR/smil20/animation.html#edef-animateColor"><span
      class="einst">animateColor</span></a><span class="content"> |</span><a
      href="http://www.w3.org/TR/smil20/animation.html#edef-set"><span
      class="einst">set</span></a><span class="einst"></span> <span
      class="content">| </span><a
      href="http://www.w3.org/TR/smil20/animation.html#edef-animateMotion">
      <span class="einst">animateMotion</span></a> (not including spline
      support from the <a
      href="http://www.w3.org/TR/smil20/animation.html#animationNS-OverviewSpline">
      SplineAnimation Module</a>)</dd>
  <dt><b><a name="AllAnimation">AllAnimation</a></b></dt>
    <dd>BaseAnimation (plus the spline support from the <a
      href="http://www.w3.org/TR/smil20/animation.html#animationNS-OverviewSpline">
      SplineAnimation Module</a>)</dd>
</dl>

<h4 id="target-element">Specifying the target element of the animation</h4>

<p>This profile uses the <a
href="http://www.w3.org/TR/smil20/animation.html#adef-targetElement"> <span
class="ainst">targetElement</span></a> attribute to identify the element to
be affected by animation elements. As recommended in the <a
href="http://www.w3.org/TR/smil20/animation.html#animationNS-OverviewBasic">
BasicAnimation Module</a> when the <a
href="http://www.w3.org/TR/smil20/animation.html#adef-targetElement"> <span
class="ainst">targetElement</span></a> attribute is supported, the profile
excludes the XLink <a href="#ref-XLINK">[XLINK]</a> attributes <a
href="http://www.w3.org/TR/smil20/animation.html#adef-animate-href"> <span
class="ainst">href</span></a>, <a
href="http://www.w3.org/TR/smil20/animation.html#adef-animate-type"> <span
class="ainst">type</span></a>, <a
href="http://www.w3.org/TR/smil20/animation.html#adef-animate-actuate"> <span
class="ainst">actuate</span></a>, and <a
href="http://www.w3.org/TR/smil20/animation.html#adef-animate-show"> <span
class="ainst">show</span></a> from the <a
href="http://www.w3.org/TR/smil20/animation.html#edef-animate"> <span
class="einst">animate</span></a>, <a
href="http://www.w3.org/TR/smil20/animation.html#edef-set"> <span
class="einst">set</span></a>, <a
href="http://www.w3.org/TR/smil20/animation.html#edef-animateMotion"> <span
class="einst">animateMotion</span></a>, and <a
href="http://www.w3.org/TR/smil20/animation.html#edef-animateColor"> <span
class="einst">animateColor</span></a> elements.</p>

<p>Animation is allowed on all elements included in XHTML modules defined by
XHTML Modularization <a href="#ref-XMOD">[XMOD]</a> unless exempted by this
list:</p>
<ul>
  <li><span class="einst">head</span>, <span class="einst">title</span>,
    <span class="einst"> style</span>, <span class="einst">meta</span>, <span
    class="einst">base</span>, <span class="einst">link</span></li>
  <li><span class="einst">script</span></li>
  <li><a
    href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-param"><span
    class="einst">param</span></a></li>
  <li><a href="http://www.w3.org/TR/smil20/smil-timing.html#edef-par"><span
    class="einst">par</span></a>, <a
    href="http://www.w3.org/TR/smil20/smil-timing.html#edef-seq"><span
    class="einst">seq</span></a>, <a
    href="http://www.w3.org/TR/smil20/smil-timing.html#edef-excl"><span
    class="einst">excl</span></a></li>
  <li><a
    href="http://www.w3.org/TR/smil20/smil-content.html#edef-switch"><span
    class="einst">switch</span></a></li>
  <li><a href="http://www.w3.org/TR/smil20/animation.html#edef-animate"><span
    class="einst">animate</span></a>, <a
    href="http://www.w3.org/TR/smil20/animation.html#edef-set"><span
    class="einst">set</span></a>, <a
    href="http://www.w3.org/TR/smil20/animation.html#edef-animateMotion"><span
    class="einst"> animateMotion</span></a> , <a
    href="http://www.w3.org/TR/smil20/animation.html#edef-animateColor">
    <span class="einst">animateColor</span></a></li>
  <li><span class="einst">frameset</span>, <span class="einst">frame</span>,
    <span class="einst"> noframes</span></li>
</ul>

<p>Certain animation elements are restricted to targeting only the following
elements with the <a
href="http://www.w3.org/TR/smil20/animation.html#adef-targetElement"> <span
class="ainst">targetElement</span></a> attribute: <br>
</p>

<table cellpadding="3" summary="Elements targetable by targetElement"
border="1">
  <thead>
    <tr>
      <th>Elements</th>
      <th>Valid targets</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a
        href="http://www.w3.org/TR/smil20/animation.html#edef-animate"><span
        class="einst">animate</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#edef-set"><span
        class="einst">set</span></a></td>
      <td><span class="einst">body</span>, <span
        class="einst">noscript</span>, <span class="einst"> font</span>,
        <span class="einst">s</span>, <span class="einst">strike</span>,
        <span class="einst">u</span>, <span class="einst">area</span>, <span
        class="einst">map</span>, <span class="einst">object</span>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_textmodule">
        Basic Text</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_presentationmodule">
        Presentation</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_editmodule">
        Edit</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_bdomodule">
        Bi-directional Text</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_hypertextmodule">
        Hypertext</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_listmodule">
        List</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_extformsmodule">
        Forms</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_tablemodule">
        Tables</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_imagemodule">
        Image</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_iframemodule">
        IFrame</a></td>
    </tr>
    <tr>
      <td><a
        href="http://www.w3.org/TR/smil20/animation.html#edef-animateMotion"><span
        class="einst">animateMotion</span></a></td>
      <td><span class="einst">address</span>, <span
        class="einst">blockquote</span>, <span class="einst"> cite</span>,
        <span class="einst">code</span>, <span class="einst">dfn</span>,
        <span class="einst">div</span>, <span class="einst">em</span>,<span
        class="einst"> h1</span>, <span class="einst">h2</span>, <span
        class="einst">h3</span>, <span class="einst">h4</span>, <span
        class="einst">h5</span>, <span class="einst">h6</span>, <span
        class="einst">kbd</span>, <span class="einst">p</span>, <span
        class="einst">pre</span>, <span class="einst">q</span>, <span
        class="einst">samp</span>, <span class="einst">span</span>, <span
        class="einst"> strong</span>, <span class="einst">var</span>, <span
        class="einst">font</span>, <span class="einst">s</span>, <span
        class="einst">strike</span>, <span class="einst"> u</span>, <span
        class="einst">object</span>, <span class="einst">form</span>, <span
        class="einst">input</span>, <span class="einst">select</span>,<span
        class="einst"> textarea</span>, <span
        class="einst">button</span>,<span class="einst"> fieldset</span>,
        <span class="einst">label</span>, <span
        class="einst">legend</span>,<span class="einst"> table</span>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_presentationmodule">
        Presentation</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_hypertextmodule">
        Hypertext</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_listmodule">
        List</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_imagemodule">
        Image</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_iframemodule">
        IFrame</a></td>
    </tr>
    <tr>
      <td><a
        href="http://www.w3.org/TR/smil20/animation.html#edef-animateColor"><span
        class="einst">animateColor</span></a></td>
      <td><span class="einst">address</span>, <span
        class="einst">blockquote</span>, <span class="einst"> cite</span>,
        <span class="einst">code</span>, <span class="einst">dfn</span>,
        <span class="einst">div</span>, <span class="einst">em</span>,<span
        class="einst"> h1</span>, <span class="einst">h2</span>, <span
        class="einst">h3</span>, <span class="einst">h4</span>, <span
        class="einst">h5</span>, <span class="einst">h6</span>, <span
        class="einst">kbd</span>, <span class="einst">p</span>, <span
        class="einst">pre</span>, <span class="einst">q</span>, <span
        class="einst">samp</span>, <span class="einst">span</span>, <span
        class="einst"> strong</span>, <span class="einst">var</span>, <span
        class="einst">font</span>, <span class="einst">s</span>, <span
        class="einst">strike</span>, <span class="einst"> u</span>, <span
        class="einst">form</span>, <span class="einst">input</span>, <span
        class="einst">select</span>, option, <span
        class="einst">textarea</span>, <span class="einst">
        button</span>,<span class="einst"> fieldset</span>, <span
        class="einst">label</span>, <span class="einst">legend</span>, <span
        class="einst">optgroup</span>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_presentationmodule">
        Presentation</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_hypertextmodule">
        Hypertext</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_listmodule">
        List</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#sec_5.6.">
        Tables</a>, <a
        href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_iframemodule">
        IFrame</a></td>
    </tr>
  </tbody>
</table>

<h4 id="target-attribute">Specifying the target attribute name of the
animation</h4>

<p>The target attributes of the animation are a subset of the attributes of
the allowed target elements. For the elements on which animation is allowed,
the following attributes may be animated:  <br>
<span class="ainst">align</span>, <span class="ainst">bgcolor</span>, <span
class="ainst">border</span>, <span class="ainst">cellhalign</span>, <span
class="ainst">cellpadding</span>, <span class="ainst">cellspacing</span>,
<span class="ainst">cellvalign</span>, <span class="ainst">checked</span>,
<span class="ainst">class</span>, <span class="ainst"> clear</span>, <span
class="ainst">color</span>, <span class="ainst">cols</span>, <span
class="ainst">dir</span>, <span class="ainst">disabled</span>, <span
class="ainst"> face</span>, <span class="ainst">frame</span>, <span
class="ainst"> frameborder</span>, <span class="ainst">height</span>, <span
class="ainst">href</span>, <span class="ainst"> marginwidth</span>, <span
class="ainst">marginheight</span>, <span class="ainst">rows</span>, <span
class="ainst">rules</span>, <span class="ainst">selected, no</span><span
class="ainst">shade</span>, <span class="ainst">size</span>, <span
class="ainst">style</span>,<span class="ainst"> title</span>, <span
class="ainst">valign</span>, <span class="ainst">value</span>, <span
class="ainst">width</span>. </p>

<h4 id="Positioning-model">Positioning model and constraints for the
animateMotion element</h4>

<p>The origin attribute of the <a
href="http://www.w3.org/TR/smil20/animation.html#edef-animateMotion"> <span
class="einst">animateMotion</span></a> element defines the relative origin of
the values specified.</p>
<dl>
  <dt><a href="http://www.w3.org/TR/smil20/animation.html#adef-origin"><span
  class="adef">origin</span></a> = ( parent | element )</dt>
    <dd>Specifies the origin of the values specified in the <a
      href="http://www.w3.org/TR/smil20/animation.html#edef-animateMotion">
      <span class="einst">animateMotion</span></a> element.
      <dl>
        <dt>element</dt>
          <dd>The motion animation is defined relative to the target
            element's position. <br>
            This is the default.</dd>
        <dt>parent</dt>
          <dd>The motion animation is defined relative to the parent
            container of the target element.</dd>
      </dl>
    </dd>
</dl>

<p>The <a href="http://www.w3.org/TR/smil20/animation.html#adef-origin"><span
class="adef-origin adef"> origin</span></a> attribute controls the
interaction of the animation function values with the layout position of the
target element. The CSS attributes position, top, and left determine the
layout position of the element. In effect, <a
href="http://www.w3.org/TR/smil20/animation.html#adef-origin"> <span
class="adef-origin adef">origin</span></a> determines whether to add the
element position to the result of the animation function to obtain the
element position in the container coordinate space.</p>

<h5 id="Origin-and-Absolute">Origin and Absolute Positioning</h5>

<p>The following example illustrates element relative motion:</p>
<pre>&lt;div style="position:absolute; top:100px; left:100px" &gt;
   &lt;animateMotion dur="5" from="50,50" to="150,150" <strong>origin="element"</strong> /&gt;
&lt;/div&gt;</pre>

<p>The layout position of the target div is (100,100). The effect is to add
the layout position of the target element to each value of the animation
function. The target moves from position (150, 150) to (250, 250) in the
container coordinate space.</p>

<p>The following example illustrates parent relative motion:</p>
<pre>&lt;div style="position:absolute; top:100; left:100" &gt;
   &lt;animateMotion dur="5" from="50,50" to="150,150" <strong>origin="parent"</strong> /&gt;
&lt;/div&gt;</pre>

<p>The layout position of the target div again is (100,100). The effect is to
ignore the layout position when computing the animation function values. The
target moves from position (50, 50) to (150, 150) in the container coordinate
space.</p>

<h4 id="animateColor-element">Constraints for the animateColor element</h4>

<p>The <a
href="http://www.w3.org/TR/smil20/animation.html#animationNS-OverviewBasic">BasicAnimation
Module</a> expresses the attribute upon which the animation should act using
the <a
href="http://www.w3.org/TR/smil20/animation.html#adef-attributeName"><span
class="ainst"> attributeName</span></a> attribute. The only valid target
attribute names for the <a
href="http://www.w3.org/TR/smil20/animation.html#edef-animateColor"> <span
class="einst">animateColor</span></a> element are the CSS2 color
properties.</p>

<h4 id="numeric-animation">Argument value syntax for numeric animation</h4>

<p>The <a href="http://www.w3.org/TR/smil20/animation.html">SMIL 2.0
Animation module</a> defines clamping values for certain numeric attributes.
The calculation of these attributes shall be performed in floating point.</p>

<h3 id="Content-Control-Module">2.6-Content Control Module</h3>

<p>The <a href="http://www.w3.org/TR/smil20/smil-content.html">SMIL2.0
Content Control Module</a> provides a framework for selecting content based
on a set of test attributes. The <a
href="http://www.w3.org/TR/smil20/smil-content.html">Content Control
Module</a> defines semantics for the <a
href="http://www.w3.org/TR/smil20/smil-content.html#edef-switch"> <span
class="einst">switch</span></a> element, adds the <a
href="http://www.w3.org/TR/smil20/smil-content.html#edef-switch"> <span
class="einst">switch</span></a> element to the <a name="Flow">Flow</a>
content set of the XHTML Basic Text module, and adds the Test attributes set
to the elements in the Flow content set of the <a
href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_textmodule">XHTML
Basic Text Module</a>.</p>

<p></p>

<table cellpadding="3"
summary="Elements and Attributes for Content Control Module" border="1">
  <thead>
    <tr>
      <th>Elements</th>
      <th>Attributes</th>
      <th>Content Model</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a
        href="http://www.w3.org/TR/smil20/smil-content.html#edef-switch"><span
        class="einst">switch</span></a></td>
      <td><a href="#Common">Common</a>, <a
      href="#TimingAttrSet">Timing</a></td>
      <td class="content"><a href="#Flow">Flow</a></td>
    </tr>
    <tr>
      <td><a href="#Flow">Flow</a><strong>&amp;</strong></td>
      <td><a href="#Test">Test</a></td>
      <td class="content">N/A</td>
    </tr>
  </tbody>
</table>

<p>The <a href="http://www.w3.org/TR/smil20/smil-content.html">Content
Control Module</a> defines the Attribute set "<a href="#Test">Test</a> ".</p>

<p></p>

<table cellpadding="3" summary="Definitions of Attribute Collections"
border="1">
  <thead>
    <tr>
      <th>Collection Name</th>
      <th>Attributes in Collection</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a name="Test">Test</a></td>
      <td><a
        href="http://www.w3.org/TR/smil20/smil-content.html#adef-systemBitrate"><span
        class="ainst">systemBitrate</span></a> (<span
        class="datatype">Number</span>), <a
        href="http://www.w3.org/TR/smil20/smil-content.html#adef-systemCaptions">
        <span class="ainst">systemCaptions</span></a> (<span
        class="datatype">on|off</span>), <a
        href="http://www.w3.org/TR/smil20/smil-content.html#adef-systemLanguage"><span
        class="ainst"> systemLanguage</span></a> (<span
        class="datatype">CDATA</span>), <a
        href="http://www.w3.org/TR/smil20/smil-content.html#adef-systemRequired">
        <span class="ainst">systemRequired</span></a> (<span
        class="datatype">URI</span>), <a
        href="http://www.w3.org/TR/smil20/smil-content.html#adef-systemScreenDepth"><span
        class="ainst"> systemScreenDepth</span></a> (<span
        class="datatype">CDATA</span>), <a
        href="http://www.w3.org/TR/smil20/smil-content.html#adef-systemScreenSize">
        <span class="ainst">systemScreenSize</span></a> (<span
        class="datatype">CDATA</span>), <a
        href="http://www.w3.org/TR/smil20/smil-content.html#adef-systemAudioDesc"><span
        class="ainst"> systemAudioDesc</span></a> (<span
        class="datatype">on|off</span>), <a
        href="http://www.w3.org/TR/smil20/smil-content.html#adef-systemCPU">
        <span class="ainst">systemCPU</span></a> (<span
        class="datatype">NMTOKEN</span>), <a
        href="http://www.w3.org/TR/smil20/smil-content.html#adef-systemComponent"><span
        class="ainst"> systemComponent</span></a> (<span
        class="datatype">CDATA</span>), <a
        href="http://www.w3.org/TR/smil20/smil-content.html#adef-systemOperatingSystem">
        <span class="ainst">systemOperatingSystem</span> </a>(<span
        class="datatype">CDATA</span>), <a
        href="http://www.w3.org/TR/smil20/smil-content.html#adef-systemOverdubOrSubtitle">
        <span class="ainst">systemOverdubOrSubtitle</span></a> (<span
        class="datatype">overdub|subtitle</span>)</td>
    </tr>
  </tbody>
</table>

<h3 id="Media-Module">2.7-Media Object Module</h3>

<p>The <a
href="http://www.w3.org/TR/smil20/extended-media-object.html">SMIL2.0 Media
Object Module</a> provides a framework for declaring media. The <a
href="http://www.w3.org/TR/smil20/extended-media-object.html"> Media Object
Module</a> defines semantics for the <a class="noxref"
href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-ref"> <span
class="einst">ref</span></a>, <a class="noxref"
href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-animation">
<span class="einst">animation</span></a>, <a class="noxref"
href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-audio">
<span class="einst">audio</span></a>, <a class="noxref"
href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-img"> <span
class="einst">img</span></a>, <span class="einst">iframe (additional to
semantics defined by XHTML)</span>, <a class="noxref"
href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-video">
<span class="einst">video</span></a>, <a class="noxref"
href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-text">
<span class="einst">text</span></a> and <a class="noxref"
href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-textstream">
<span class="einst">textstream</span></a> elements. XHTML defines img and
iframe elements, and so the integration of the Media module extends the
semantics and content model of these elements.</p>

<p>This profile adds the <a class="noxref"
href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-ref"> <span
class="einst">ref</span></a>, <a class="noxref"
href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-animation">
<span class="einst">animation</span></a>, <a class="noxref"
href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-audio">
<span class="einst">audio</span></a>, <span class="einst">img</span>, <span
class="einst"> iframe</span>, <a class="noxref"
href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-video">
<span class="einst">video</span></a>, <a class="noxref"
href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-text">
<span class="einst">text</span></a> and <a class="noxref"
href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-textstream">
<span class="einst">textstream</span></a> elements to the content model of
the <a class="noxref"
href="http://www.w3.org/TR/smil20/smil-timing.html#edef-par"><span
class="einst"> par</span></a>, <a class="noxref"
href="http://www.w3.org/TR/smil20/smil-timing.html#edef-seq"> <span
class="einst">seq</span></a>, and <a class="noxref"
href="http://www.w3.org/TR/smil20/smil-timing.html#edef-excl"> <span
class="einst">excl</span></a> elements of the <a
href="http://www.w3.org/TR/smil20/smil-timing.html"> Timing and
Synchronization Module</a>. It also adds these elements to the Inline content
set of the <a
href="http://www.w3.org/TR/xhtml-modularization/abstract_modules.html#s_textmodule">
Basic Text Module</a> .</p>

<p></p>

<table cellpadding="3"
summary="Elements and Attributes for Content Control    Module" border="1">
  <tbody>
    <tr>
      <th>Elements</th>
      <th>Attributes</th>
      <th>Content Model</th>
    </tr>
    <tr>
      <td><a class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-ref"><span
        class="einst">ref</span></a>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-animation">
        <span class="einst">animation</span></a>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-audio">
        <span class="einst">audio</span></a>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-img">
        <span class="einst">img</span></a><strong>&amp;</strong>, <span
        class="einst">iframe</span><strong>&amp;</strong>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-video">
        <span class="einst">video</span></a>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-text">
        <span class="einst">text,</span></a> <a class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-textstream">
        <span class="einst">textstream</span></a></td>
      <td><a href="#Common">Common</a>, <a href="#Test">Test</a>, <a
        href="#TimingAttrSet">Timing</a>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#adef-timeContainer">
        <span class="ainst">timeContainer</span></a>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#adef-clipBegin">
        <span class="ainst">clipBegin</span></a>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#adef-clipEnd">
        <span class="ainst">clipEnd</span></a>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#adef-src">
        <span class="ainst">src</span></a>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-content.html#adef-mediaTime">
        <span class="ainst">mediaType</span></a></td>
      <td class="content"><a href="#AllAnimation">AllAnimation</a>, <a
        class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#adef-timeContainer">
        <span class="ainst">timeContainer</span></a>, <span
        class="einst">area</span>, <span class="einst">param</span></td>
    </tr>
    <tr>
      <td><a
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-par"><span
        class="einst">par</span></a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-seq"><span
        class="einst">seq</span></a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-excl"><span
        class="einst">excl</span></a><strong>&amp;</strong>,
        Inline<strong>&amp;</strong></td>
      <td> </td>
      <td class="content"><a class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-ref"><span
        class="einst">ref</span></a><strong>*</strong>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-animation">
        <span class="einst">animation</span></a><strong>*</strong>, <a
        class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-audio">
        <span class="einst">audio</span></a><strong>*</strong>, <a
        class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-img">
        <span class="einst">img</span></a><strong>*</strong>, <span
        class="einst">iframe</span><strong>*</strong>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-video">
        <span class="einst">video</span></a><strong>*</strong>, <a
        class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-text">
        <span class="einst">text</span></a><strong>*</strong>, <a
        class="noxref"
        href="http://www.w3.org/TR/smil20/extended-media-object.html#edef-textstream">
        <span class="einst">textstream</span></a><strong>*</strong></td>
    </tr>
  </tbody>
</table>

<h4 id="Additional-integration-Media-Module">Additional integration issues
for the Media Object Module</h4>

<p>This profile adds media object properties to the XHTML <span
class="einst">img</span> and <span class="einst">iframe</span> elements.
While implementation rules for the <span class="einst">img</span> element
remain unchanged, the following issues must be taken into consideration when
supporting a SMIL-enabled <span class="einst"> iframe</span>:</p>
<ul>
  <li>When the <span class="einst">iframe</span> contains timed content,
    including SMIL documents, additional XHTML+SMIL content, or timed
    multimedia, the timeline of the nested object should not begin until the
    <span class="einst">iframe</span> element begins.</li>
  <li>The timeline on an object contained inside an <span
    class="einst">iframe</span> element should restart each time the
    <span>iframe</span> element begins or repeats. If applicable, a reset
    event should be fired on the root element of the document hosted by the
    <span class="einst">iframe</span>.</li>
</ul>

<h3 id="Timing-Synchronization-Module">2.8-Timing and Synchronization
Module</h3>

<p>The <a href="http://www.w3.org/TR/smil20/smil-timing.html">SMIL2.0 Timing
and Synchronization Module</a> provides a framework for describing timing
structure, timing control properties, and temporal relationships between
elements.</p>

<p>The <a href="http://www.w3.org/TR/smil20/smil-timing.html">Timing and
Synchronization Module</a> defines the elements <a class="noxref"
href="http://www.w3.org/TR/smil20/smil-timing.html#edef-par"> <span
class="einst">par</span></a>, <a class="noxref"
href="http://www.w3.org/TR/smil20/smil-timing.html#edef-seq"> <span
class="einst">seq</span></a>, and <a class="noxref"
href="http://www.w3.org/TR/smil20/smil-timing.html#edef-excl"> <span
class="einst">excl</span></a>. It adds the <a class="noxref"
href="http://www.w3.org/TR/smil20/smil-timing.html#edef-par"> <span
class="einst">par</span></a>, <a class="noxref"
href="http://www.w3.org/TR/smil20/smil-timing.html#edef-seq"> <span
class="einst">seq</span></a>, and <a class="noxref"
href="http://www.w3.org/TR/smil20/smil-timing.html#edef-excl"> <span
class="einst">excl</span></a>  elements to the Inline content set of the
Basic Text, Hypertext and Tables Modules.</p>

<p>This profile adds the <a href="#TimingAttrSet">Timing</a> and <a
href="#RuntimeSyncAttrSet"> RuntimeSync</a> attribute sets from the <a
href="http://www.w3.org/TR/smil20/smil-timing.html"> Timing and
Synchronization Module</a> to the elements in the <a
href="http://www.w3.org/TR/smil20/extended-media-object.html"> Media Object
Module</a>, and adds the <a href="#TimingAttrSet">Timing</a> attribute set to
the Flow content set of the Basic Text Module In addition, the <a
href="#TimingAttrSet"> Timing</a> attribute set is added to the <span
class="einst">body</span> element in the XHTML Structure module.</p>

<p></p>

<table cellspacing="3" cellpadding="4" border="1">
  <thead>
    <tr>
      <th>Elements</th>
      <th>Attributes</th>
      <th>Content Model</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-par"><span
        class="einst">par</span></a></td>
      <td><a href="#Common">Common</a>, <a href="#Test">Test</a>, <a
        href="#TimingAttrSet">Timing</a>, <a
        href="#RuntimeSyncAttrSet">RuntimeSync</a>, <span
        class="ainst">timeAction </span> (<span
      class="datatype">CDATA</span>)</td>
      <td class="content"><a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-par"><span
        class="einst">par</span></a>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-seq"> <span
        class="einst">seq</span></a><span class="einst">,</span> <a
        class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-excl"> <span
        class="einst">excl</span></a><span class="einst">,</span> <a
        href="#Flow"> Flow</a></td>
    </tr>
    <tr>
      <td><a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-seq"><span
        class="einst">seq</span></a></td>
      <td><a href="#Common">Common</a>, <a href="#Test">Test</a>, <a
        href="#TimingAttrSet">Timing</a>, <a
        href="#RuntimeSyncAttrSet">RuntimeSync</a>, <span
        class="ainst">timeAction </span> (<span
      class="datatype">CDATA</span>)</td>
      <td class="content"><a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-par"><span
        class="einst">par</span></a>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-seq"> <span
        class="einst">seq</span></a><span class="einst">,</span> <a
        class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-excl"> <span
        class="einst">excl</span></a><span class="einst">,</span> <a
        href="#Flow"> Flow</a></td>
    </tr>
    <tr>
      <td><a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-excl"><span
        class="einst">excl</span></a></td>
      <td><a href="#Common">Common</a>, <a href="#Test">Test</a>, <a
        href="#TimingAttrSet">Timing</a>, <a
        href="#RuntimeSyncAttrSet">RuntimeSync</a>, <span
        class="ainst">timeAction </span> (<span
      class="datatype">CDATA</span>)</td>
      <td class="content"><a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-par"><span
        class="einst">par</span></a>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-seq"> <span
        class="einst">seq</span></a><span class="einst">,</span> <a
        class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-excl"> <span
        class="einst">excl</span></a><span class="einst">,</span> <a
        href="#Flow"> Flow</a></td>
    </tr>
    <tr>
      <td>Inline<strong>&amp;</strong></td>
      <td> </td>
      <td class="content"><a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-par"><span
        class="einst">par</span></a><strong>*</strong>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-seq"> <span
        class="einst">seq</span></a><strong>*</strong><span
        class="einst">,</span> <a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-excl"><span
        class="einst"> excl</span></a><strong>*</strong></td>
    </tr>
    <tr>
      <td>Media</td>
      <td><a href="#TimingAttrSet">Timing</a>, <a
        href="#RuntimeSyncAttrSet">RuntimeSync</a></td>
      <td> </td>
    </tr>
    <tr>
      <td><span class="einst">body</span>, <a href="#Flow">Flow</a></td>
      <td><a href="#TimingAttrSet">Timing</a></td>
      <td> </td>
    </tr>
  </tbody>
</table>

<p>The <a href="http://www.w3.org/TR/smil20/smil-timing.html">Timing and
Synchronization Module</a> defines the Attribute sets "<a
href="#TimingAttrSet">Timing</a>" and "<a
href="#RuntimeSyncAttrSet">RuntimeSync</a> ".</p>

<p></p>

<table cellspacing="3" cellpadding="4" border="1">
  <thead>
    <tr>
      <th>Collection Name</th>
      <th>Attributes in Collection</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a name="TimingAttrSet">Timing</a></td>
      <td><a
        href="http://www.w3.org/TR/smil20/smil-timing.html#adef-begin"><span
        class="ainst">begin</span></a> (<span class="datatype">CDATA</span>),
        <a href="http://www.w3.org/TR/smil20/smil-timing.html#adef-dur">
        <span class="ainst">dur</span></a> (<span
        class="datatype">CDATA</span>), <a
        href="http://www.w3.org/TR/smil20/smil-timing.html#adef-repeatCount">
        <span class="ainst">repeatCount</span></a> (<span
        class="datatype">CDATA</span>), <a
        href="http://www.w3.org/TR/smil20/smil-timing.html#adef-repeatDur"><span
        class="ainst"> repeatDur</span></a> (<span
        class="datatype">CDATA</span>), <a
        href="http://www.w3.org/TR/smil20/smil-timing.html#adef-end"> <span
        class="ainst">end</span></a> (<span class="datatype">CDATA</span>),
        <a href="http://www.w3.org/TR/smil20/smil-timing.html#adef-endsync">
        <span class="ainst">endsync</span></a> (<span
        class="datatype">CDATA</span>), <a
        href="http://www.w3.org/TR/smil20/smil-timing.html#adef-fill"><span
        class="ainst">fill</span></a> (<span class="datatype">CDATA</span>),
        <a href="http://www.w3.org/TR/smil20/smil-timing.html#adef-restart">
        <span class="ainst">restart</span></a> (<span
        class="datatype">always|whenNotActive|never</span>), <a
        href="http://www.w3.org/TR/smil20/smil-timing.html#adef-timeAction"><span
        class="ainst"> timeAction</span></a> (<span class="datatype"><a
        href="#HTML-SMIL-ProfileNS-dt_TimeActions">TimeActions</a></span>),
        <span class="ainst">onBegin</span> (<span
        class="datatype">Script</span>), <span class="ainst"> onEnd</span>
        (<span class="datatype">Script</span>), <span
        class="ainst">onRepeat</span> (<span
      class="datatype">Script</span>)</td>
    </tr>
    <tr>
      <td><a name="RuntimeSyncAttrSet">RuntimeSync</a></td>
      <td><a
        href="http://www.w3.org/TR/smil20/smil-timing.html#adef-syncBehavior"><span
        class="ainst">syncBehavior</span></a> (<span
        class="datatype">locked|canSlip|independent</span>), <a
        href="http://www.w3.org/TR/smil20/smil-timing.html#adef-syncTolerance"><span
        class="ainst"> syncTolerance</span></a> (<span
        class="datatype">CDATA</span>), <a
        href="http://www.w3.org/TR/smil20/smil-timing.html#adef-syncMaster">
        <span class="ainst">syncMaster</span></a> (<span
        class="datatype">true|false</span>)</td>
    </tr>
  </tbody>
</table>

<p>In addition to the data types defined by XHTML Modularization, the
XHTML+SMIL profile defines the TimeActions data type and its semantics,
described in the following table:</p>

<p></p>

<table cellspacing="3" cellpadding="4" border="1">
  <tbody>
    <tr>
      <th>Data type</th>
      <th>Description</th>
    </tr>
    <tr>
      <td id="dt_LinkTypes"><a
        name="HTML-SMIL-ProfileNS-dt_TimeActions">TimeActions</a></td>
      <td>Authors may use the following recognized time actions, listed here
        with their interpretations.
        <dl>
          <dt><strong>none</strong></dt>
            <dd>Specifies that no action is performed on the element when it
              is active. This allows the author to introduce a new time space
              without affecting the document presentation. It is only legal
              on the time container elements and the XHTML elements img and
              iframe.</dd>
          <dt><strong>visibility</strong></dt>
            <dd>Specifies that the CSS "visibility" property is to be
              manipulated over time. When the element is neither active nor
              frozen, the property is set to "hidden". When it is active, the
              original value is used. If the original value is "hidden", the
              time action will have no effect (i.e. the element will remain
              hidden). See also <a href="#ref-CSS2">[CSS2]</a></dd>
          <dt><strong>display</strong></dt>
            <dd>Specifies that the CSS "display" property is to be
              manipulated over time. When the element is neither active nor
              frozen, the property is set to "none". When it is active, the
              original value is used. If the original value is "none", the
              time action will have no effect (i.e. the element will remain
              out of view and layout). See also <a
            href="#ref-CSS2">[CSS2]</a></dd>
          <dt><strong>style</strong></dt>
            <dd>Specifies that the CSS inline style attribute "style" is to
              be removed and applied over time. When the element is neither
              active nor frozen, the inline stylesheet is cleared (so no
              style modification is made). When it is active, the original
              value (i.e. the string attribute value specified for the "<span
              class="ainst">style</span>" attribute) is used. If there is no
              inline style attribute on the element, the time action will
              have no effect. See also <a href="#ref-CSS2">[CSS2]</a>.</dd>
          <dt><strong>class:<em>classname</em></strong></dt>
            <dd>Specifies that the name "<em>[classname]</em>" will be
              <em>removed from</em> and <em>added to</em> the value of the
              "class" attribute over time. When the element is neither active
              nor frozen, the specified string (i.e. whatever the author
              specifies for "<em>classname</em>") is removed from the value
              of the class attribute (if it was included). When the element
              is active, the specified string is added to the value of the
              class attribute. Note that any other values specified in the
              class attribute are not affected. Note also that the
              application of any associated style must be specified in a
              stylesheets for the document. Note finally that the application
              of styles depends not upon the order of names in the class
              attribute, but rather on the order of the rules in the
              stylesheets for the document. See also <a
              href="#ref-CSS2">[CSS2]</a>.</dd>
        </dl>
      </td>
    </tr>
  </tbody>
</table>

<p></p>

<h4 id="TimeContainer-timeAction">TimeContainer and timeAction</h4>

<p>As part of the integration of timing and synchronization functionality
with XHTML, this profile defines the timeContainer and timeAction attributes.
This profile adds the <span class="ainst">timeContainer</span> and <span
class="ainst">timeAction </span>attributes to the elements of the Flow
content set of the Basic Text Module (as modified by all included modules).
In addition, the <span class="ainst">timeContainer</span> and <span
class="ainst">timeAction </span>attributes are added to the <span
class="einst"> body</span> element in the XHTML Structure module. The default
value of the <span class="ainst"> timeContainer</span> attribute for <span
class="einst">body</span> is "par". The <span
class="ainst">timeContainer</span> attribute is not allowed on the time
container elements <a class="noxref"
href="http://www.w3.org/TR/smil20/smil-timing.html#edef-par"> <span
class="einst">par</span></a>, <a class="noxref"
href="http://www.w3.org/TR/smil20/smil-timing.html#edef-seq"> <span
class="einst">seq</span></a>, and <a class="noxref"
href="http://www.w3.org/TR/smil20/smil-timing.html#edef-excl"> <span
class="einst">excl</span></a> .</p>

<p>The <span class="ainst">timeAction</span> attribute defines the behavior
that is controlled by the timing model. The default depends upon the type of
element. The default value is "none" when used with the time container
elements. The default value of the <span class="ainst">timeAction</span>
attribute for <span class="einst">body</span> is "none".</p>

<p>The following table presents the default time actions. Those modules and
elements that are not included do not have a defined time behavior, and
cannot legally support timing attributes, or participate in the time
model.</p>

<p>Certain elements have a notion of intrinsic behavior that can be
controlled over time. This is generally some presentation or behavioral
effect, such as the font style controls of the <span class="einst">b</span>
and <span class="einst"> strong</span> elements, and the click sensitivity of
the <span class="einst">a</span> and <span class="einst">area</span>
elements. One way to logically model the control of intrinsic behavior is to
replace the element with a <span class="einst">span</span> when it is neither
active nor frozen, and to use the original element when it is active or
frozen.</p>

<p>Many other elements simply contain content and so default to controlling
the "visibility" property for the element. In some cases, an element may have
a presentational effect (e.g. the Ruby module elements), but be modeled as a
content element. The decision is based upon the usefulness in common
authoring scenarios of controlling the presentational behavior in
isolation.</p>

<p>For those elements that default to controlling "visibility", setting <span
class="ainst"> timeAction</span> to any other value <em>overrides </em>this,
and will <em>only control</em> the specified <span
class="ainst">timeAction</span> (and not the visibility). For all other
elements, the <span class="ainst">timeAction</span> will control the default
(intrinsic) behavior <em>as well as</em> the indicated <span class="ainst">
timeAction</span> behavior.</p>

<p>In addition, for those elements that default to "visibility", when they
are children of a sequence time container <span class="einst">seq</span> or
an element with "<code>timeContainer=seq</code>", the default <span
class="ainst">timeAction</span> is "display". This more closely matches the
expected behavior of the SMIL Language profile.</p>

<p><b>Element default timeActions</b></p>

<table cellspacing="3" cellpadding="4" border="1">
  <tbody>
    <tr>
      <th>Module</th>
      <th>Elements</th>
      <th>Default time action</th>
    </tr>
    <tr>
      <td>Structure</td>
      <td><span class="einst">body</span></td>
      <td>"none"</td>
    </tr>
    <tr>
      <td>Media</td>
      <td><em>(all)</em></td>
      <td><em>schedule for playback and render</em></td>
    </tr>
    <tr>
      <td>Timing</td>
      <td><em>(all)</em></td>
      <td>"none"</td>
    </tr>
    <tr>
      <td>Text</td>
      <td><span class="einst">em</span>, <span class="einst">kbd</span>,
        <span class="einst">strong</span>, <span class="einst">var</span></td>
      <td><em>intrinsic behavior</em></td>
    </tr>
    <tr>
      <td>Text</td>
      <td><em>(all others)</em></td>
      <td>"visibility"</td>
    </tr>
    <tr>
      <td>Hypertext</td>
      <td><span class="einst">a</span></td>
      <td><em>link sensitivity</em></td>
    </tr>
    <tr>
      <td>Lists</td>
      <td><em>(all)</em></td>
      <td>"visibility"</td>
    </tr>
    <tr>
      <td>Applet</td>
      <td><span class="einst">applet</span></td>
      <td>"visibility"</td>
    </tr>
    <tr>
      <td>Presentational</td>
      <td><em>(all)</em></td>
      <td><em>intrinsic behavior</em></td>
    </tr>
    <tr>
      <td>Edit</td>
      <td><em>(all)</em></td>
      <td><em>intrinsic behavior</em></td>
    </tr>
    <tr>
      <td>Forms</td>
      <td><em>(all)</em></td>
      <td>"visibility"</td>
    </tr>
    <tr>
      <td>Tables</td>
      <td><em>(all)</em></td>
      <td>"visibility"</td>
    </tr>
    <tr>
      <td>Image Map</td>
      <td><span class="einst">area</span></td>
      <td><em>link sensitivity</em></td>
    </tr>
    <tr>
      <td>Object</td>
      <td><span class="einst">object</span></td>
      <td>"visibility"</td>
    </tr>
    <tr>
      <td>Iframe</td>
      <td><span class="einst">iframe</span></td>
      <td><em>intrinsic behavior (schedule for display and render)</em></td>
    </tr>
    <tr>
      <td>Ruby</td>
      <td><em>(all)</em></td>
      <td>"visibility"</td>
    </tr>
    <tr>
      <td>Legacy</td>
      <td><em>(all)</em></td>
      <td><em>intrinsic behavior</em></td>
    </tr>
    <tr>
      <td>Timing</td>
      <td><a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-par"><span
        class="einst">par</span></a>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-seq"> <span
        class="einst">seq</span></a>, <a class="noxref"
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-excl"> <span
        class="einst">excl</span></a></td>
      <td>"none"</td>
    </tr>
  </tbody>
</table>

<p>All modules not listed in the table, and all Structure module elements
except <span class="einst"> body</span> do not support timing.</p>

<h4 id="Events-XHTMLplusSMIL">Events supported by XHTML+SMIL</h4>

<p>The XHTML+SMIL Language profile specifies events that can be used in
conjunction with the SMIL elements defined by the profile. Additionally, DOM
2 dynamic events <a href="#ref-DOMLevel2Events">[DOMLevel2Events]</a> can
also be used.</p>

<table cellspacing="3" cellpadding="4" border="1">
  <thead>
    <tr>
      <th>Event</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>beginEvent</td>
      <td>This event is raised when the timeline starts on an element (see
        the definition of <code>beginEvent</code> in the SMIL <a
        href="http://www.w3.org/TR/smil20/smil-timing.html"> Timing and
        Synchronization Module</a>)</td>
    </tr>
    <tr>
      <td>endEvent</td>
      <td>This event is raised when the timeline stops on an element. (see
        the definition of <code>endEvent</code> in the SMIL <a
        href="http://www.w3.org/TR/smil20/smil-timing.html"> Timing and
        Synchronization Module</a>)</td>
    </tr>
    <tr>
      <td>mediacomplete</td>
      <td>This event is raised when the element's associated media finishes
        loading. This event may be raised before the media begins playing,
        when the element is associated with streaming media.</td>
    </tr>
    <tr>
      <td>mediaerror</td>
      <td>This event is raised when any error is caused by the media file.
        Errors caused by the media file may include an attempt to load a
        media file with an invalid path, or if problems with the media file
        (such as file corruption or an invalid media type) prevent it from
        loading and playing.</td>
    </tr>
    <tr>
      <td>outofsync</td>
      <td>This event is raised when the element loses synchronization with
        its associated timeline. This includes the interruption of an
        element's ability to play its associated media, or any other
        circumstance where synchronization is lost.</td>
    </tr>
    <tr>
      <td>pause</td>
      <td>This event is raised when the timeline on an element is paused. It
        may be raised in the case that the timeline is paused by a DOM
      method.</td>
    </tr>
    <tr>
      <td>repeat</td>
      <td>This event is raised when the timeline repeats on an element,
        beginning with the second iteration (see the definition of the
        <code>repeat</code> event in the SMIL <a
        href="http://www.w3.org/TR/smil20/smil-timing.html">Timing and
        Synchronization Module</a>).</td>
    </tr>
    <tr>
      <td>reset</td>
      <td>This event is raised when the timeline state is reset to the value
        of the begin attribute and playback is commenced from the beginning
        of the timeline. It may be raised in the case that the timeline is
        reset by a DOM method.</td>
    </tr>
    <tr>
      <td>resume</td>
      <td>This event is raised when an element's timeline resumes from a
        paused state. It may be raised in the case that timeline playback is
        resumed by a DOM method.</td>
    </tr>
    <tr>
      <td>reverse</td>
      <td>This event is raised when the timeline on an element begins to play
        backward. It may be raised both in the course of normal timeline
        play, as well as in the case that element playback was reversed with
        a DOM method.</td>
    </tr>
    <tr>
      <td>seek</td>
      <td>This event is raised whenever a seek operation is performed on the
        element. It may be raised in the case that the seek operation is
        executed by a DOM method.</td>
    </tr>
    <tr>
      <td>syncrestored</td>
      <td>This event is raised whenever an outofsync event is raised and
        synchronization is restored. Specifically, the syncrestored event is
        raised when synchronization is resumed between the element and its
        associated timeline.</td>
    </tr>
    <tr>
      <td>timeerror</td>
      <td>This event is raised whenever a time-specific error occurs as a
        result of setting an invalid value for a SMIL attribute. The
        timeerror event is raised when any attribute defined by the
        XHTML+SMIL profile is set to an invalid value, either in the course
        of normal playback or by a DOM method.</td>
    </tr>
  </tbody>
</table>

<p></p>

<h4 id="Add-int-conf-Timing">Additional integration conformance issues with
Timing</h4>

<p>The <a href="http://www.w3.org/TR/smil20/smil-timing.html">Timing and
Synchronization Module</a> defines the following additional conformance
definition requirements for the language integration profile:</p>
<ul>
  <li>The XHTML+SMIL document is presented when it is displayed on the
  screen.</li>
  <li>The document begins when it has been completely received by the client,
    loaded by the user agent, and presented.</li>
  <li>The document ends when the user agent ceases to present it, through
    switching to another document or exiting.</li>
</ul>

<h3 id="Time-Manipulations">2.9-Time Manipulations Module</h3>

<p>The <a href="http://www.w3.org/TR/smil20/smil-timemanip.html">SMIL2.0 Time
Manipulations Module</a> provides attributes for the manipulation of SMIL
element timelines.</p>

<p>The <a href="http://www.w3.org/TR/smil20/smil-timemanip.html">Time
Manipulations Module</a> defines the <a
href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-accelerate"> <span
class="ainst">accelerate</span></a>, <a
href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-decelerate"> <span
class="ainst">decelerate</span></a>, <a
href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-autoReverse">
<span class="ainst">autoReverse</span></a>, and <a
href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-speed"> <span
class="ainst">speed</span></a> attributes. These attributes are added to the
elements that support timing in the XHTML+SMIL profile, including the
elements in the <a
href="http://www.w3.org/TR/smil20/extended-media-object.html"> Media Object
Module</a>, the SMIL animation, time container and transition elements, the
XHTML elements img, iframe, body and the XHTML <a href="#Flow">Flow</a>
element set.</p>

<table cellspacing="3" cellpadding="4" border="1">
  <thead>
    <tr>
      <th>Elements</th>
      <th>Attributes</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a
        href="http://www.w3.org/TR/smil20/animation.html#edef-animate"><span
        class="einst">animate</span></a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/smil20/animation.html#edef-set"><span
        class="einst">set</span></a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/smil20/animation.html#edef-animateMotion"><span
        class="einst"> animateMotion</span></a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/smil20/animation.html#edef-animateColor">
        <span class="einst">animateColor</span></a><strong>&amp;</strong></td>
      <td><a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-accelerate"><span
        class="ainst">accelerate</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-decelerate">
        <span class="ainst">decelerate</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-autoReverse">
        <span class="ainst">autoReverse</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-speed">
        <span class="ainst">speed</span></a></td>
    </tr>
    <tr>
      <td>Media<strong>&amp;</strong></td>
      <td><a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-accelerate"><span
        class="ainst">accelerate</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-decelerate">
        <span class="ainst">decelerate</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-autoReverse">
        <span class="ainst">autoReverse</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-speed">
        <span class="ainst">speed</span></a></td>
    </tr>
    <tr>
      <td><a
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-par"><span
        class="einst">par</span></a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-seq"> <span
        class="einst">seq</span></a><strong>&amp;</strong>, <a
        href="http://www.w3.org/TR/smil20/smil-timing.html#edef-excl"> <span
        class="einst">excl</span></a><strong>&amp;</strong></td>
      <td><a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-accelerate"><span
        class="ainst">accelerate</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-decelerate">
        <span class="ainst">decelerate</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-autoReverse">
        <span class="ainst">autoReverse</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-speed">
        <span class="ainst">speed</span></a></td>
    </tr>
    <tr>
      <td><a
        href="http://www.w3.org/TR/smil20/smil-transitions.html#edef-transitionFilter"><span
        class="einst">transitionFilter</span></a><strong>&amp;</strong></td>
      <td><a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-accelerate"><span
        class="ainst">accelerate</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-decelerate">
        <span class="ainst">decelerate</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-autoReverse">
        <span class="ainst">autoReverse</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-speed">
        <span class="ainst">speed</span></a></td>
    </tr>
    <tr>
      <td><span class="einst">img</span><strong>&amp;</strong>,<span
        class="einst"> iframe</span><strong>&amp;, </strong><span
        class="einst">body</span>, <a href="#Flow">Flow</a></td>
      <td><a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-accelerate"><span
        class="ainst">accelerate</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-decelerate">
        <span class="ainst">decelerate</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-autoReverse">
        <span class="ainst">autoReverse</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-timemanip.html#adef-speed">
        <span class="ainst">speed</span></a></td>
    </tr>
  </tbody>
</table>

<h3 id="Transition-Effects-Module">2.10-Transition Effects Module</h3>

<p>The <a href="http://www.w3.org/TR/smil20/smil-transitions.html">Transition
Effects Module</a> defines a taxonomy of transition effects as well as
semantics and syntax for integrating these effects into XHTML documents. The
XHTML+SMIL profile includes the functionality of the <a
href="http://www.w3.org/TR/smil20/smil-transitions.html#TransitionEffects-Inline">InlineTransitions</a>
module, which defines the <a
href="http://www.w3.org/TR/smil20/smil-transitions.html#edef-transitionFilter"><span
class="einst">transitionFilter</span></a><span class="einst">
element</span>.</p>

<p>In an XHTML document, <a
href="http://www.w3.org/TR/smil20/smil-transitions.html#edef-transitionFilter"><span
class="einst">transitionFilter</span></a><span class="einst"> </span>elements
have the following attributes and content model:</p>

<table cellspacing="3" cellpadding="4" border="1">
  <thead>
    <tr>
      <th height="19">Elements</th>
      <th height="19">Attributes</th>
      <th height="19">Content Model</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td height="17"><a
        href="http://www.w3.org/TR/smil20/smil-transitions.html#edef-transitionFilter"><span
        class="einst">transitionFilter</span></a></td>
      <td height="17"><a href="#Common">Common</a>, <a
        href="#TimingAttrSet">Timing</a>, <a
        href="http://www.w3.org/TR/smil20/smil-transitions.html#adef-transitionFilter-type">
        <span class="ainst">type</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-transitions.html#adef-transitionFilter-subtype">
        <span class="ainst">subtype</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-transitions.html#adef-transitionFilter-mode">
        <span class="ainst">mode</span></a>, <a
        href="http://www.w3.org/TR/smil20/smil-transitions.html#adef-transitionFilter-fadeColor">
        <span class="ainst">fadeColor</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-targetElement">
        <span class="ainst">targetElement</span></a><span class="ainst">,
        </span><a
        href="http://www.w3.org/TR/smil20/animation.html#adef-additive">
        <span class="ainst">additive</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-accumulate">
        <span class="ainst">accumulate</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-calcMode">
        <span class="ainst">calcMode</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-values"> <span
        class="ainst">values</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-keyTimes">
        <span class="ainst">keyTimes</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-keySplines">
        <span class="ainst">keySplines</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-from"> <span
        class="ainst">from</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-to"> <span
        class="ainst">to</span></a>, <a
        href="http://www.w3.org/TR/smil20/animation.html#adef-by"> <span
        class="ainst">by</span></a></td>
      <td class="content" height="17"><span class="einst">param</span></td>
    </tr>
  </tbody>
</table>

<p>A <a
href="http://www.w3.org/TR/smil20/smil-transitions.html#edef-transitionFilter"><span
class="einst">transitionFilter</span></a><span class="einst"> </span>element
may contain one or more XHTML <span class="xeinst">param</span> elements
describing extended transition functionality, as described in the <a
href="http://www.w3.org/TR/smil20/smil-transitions.html">Transition Effects
Module</a>  (<a
href="http://www.w3.org/TR/smil20/smil-transitions.html#q20">specific
section</a>).</p>

<p>The <a
href="http://www.w3.org/TR/smil20/smil-transitions.html#edef-transitionFilter"><span
class="einst">transitionFilter</span></a><span class="einst"> </span> element
is added to the content model of the elements in the <a
href="http://www.w3.org/TR/smil20/extended-media-object.html"> Media Object
Module</a>, and XHTML elements that support rendered content.</p>

<p>The specific XHTML elements that will support <a
href="http://www.w3.org/TR/smil20/smil-transitions.html#edef-transitionFilter"><span
class="einst">transitionFilter</span></a><span class="einst"> needs further
attention.</span></p>

<table cellspacing="3" cellpadding="4" border="1">
  <thead>
    <tr>
      <th height="19">Elements</th>
      <th height="19">Content Model</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td height="17">Media<strong>&amp;</strong><span class="einst">,
        img</span><strong>&amp;</strong>,<span class="einst"> </span>???</td>
      <td class="content" height="17"><a
        href="http://www.w3.org/TR/smil20/smil-transitions.html#edef-transitionFilter"><span
        class="einst">transitionFilter</span></a></td>
    </tr>
  </tbody>
</table>

<h2>3-<a id="SMILProfileNS-Extending"
name="SMILProfileNS-Extending1">Extending the XHTML+SMIL Language
Profile</a></h2>

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

<p>In the future, XHTML+SMIL Language may be extended by other W3C
recommendations, or by private extensions. For these extensions, the
following rules must be obeyed:</p>
<ul>
  <li>All elements introduced in extensions must have a skip-content
    attribute if it should be possible that their content is processed by
    XHTML+SMIL user agents.</li>
  <li>Private extensions must be introduced by defining a new XML
  namespace.</li>
</ul>

<p>Conformant XHTML+SMIL user agents are prepared to handle documents
containing extensions that obey these two rules.</p>

<h2 id="s_xhtmlmodules"><a
name="HTML-SMIL-ProfileNS-AppendixDTD"></a>Appendix A: Document Type
Definition</h2>

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

<p>TBD.</p>

<h2><a name="AppendixB">Appendix B: References</a></h2>

<p><strong><a class="normref" name="ref-CSS2">[CSS2]</a></strong></p>

<p>"Cascading Style Sheets, level 2", Bert Bos, Håkon Wium Lie, Chris Lilley,
Ian Jacobs. W3C Recommendation 12 May 1998, <br>
Available at <a
href="http://www.w3.org/TR/REC-CSS2">http://www.w3.org/TR/REC-CSS2</a></p>

<p><strong><a class="normref" name="ref-HTML4">[HTML4]</a></strong></p>

<p>"HTML 4.01 Specification" D. Raggett, A. Le Hors, I. Jacobs. W3C
Recommendation 24 December 1999, <br>
Available at <a
href="http://www.w3.org/TR/html401/">http://www.w3.org/TR/html401/</a></p>

<p><strong><a class="normref"
name="ref-DOMLevel2Events">[DOMLevel2Events]</a></strong></p>

<p>"Document Object Model Level 2 Events Specification", Tom Pixley. W3C
Recommendation 13 November, 2000 <br>
Available at <a
href="http://www.w3.org/TR/DOM-Level-2-Events/">http://www.w3.org/TR/DOM-Level-2-Events/</a></p>

<p><strong><a class="normref" name="ref-RUBY">[RUBY]</a></strong></p>

<p>"Ruby Annotation". W3C Recommendation 31 May 2001. <br>
Available at <a
href="http://www.w3.org/TR/2001/REC-ruby-20010531">http://www.w3.org/TR/2001/REC-ruby-20010531</a></p>

<p><strong><a class="normref" name="ref-SMIL20">[SMIL20]</a></strong></p>

<p>"Synchronized Multimedia Integration Language (SMIL 2.0) Specification".
W3C Recommendation 07 August 2001,<br>
Available at <a
href="http://www.w3.org/TR/smil20/">http://www.w3.org/TR/smil20/</a></p>

<p><strong><a class="normref"
name="ref-SMIL20-MOD">[SMIL20-MOD]</a></strong></p>

<p>"The SMIL 2.0 Modules", W3C Recommendation 07 August 2001,<br>
Available at <a
href="http://www.w3.org/TR/smil20/smil-modules.html">http://www.w3.org/TR/smil20/smil-modules.html</a></p>

<p><strong><a class="normref"
name="ref-SMIL-MOD-NOTE">[SMIL-MOD-NOTE]</a></strong></p>

<p>"Synchronized Multimedia Modules based upon SMIL 1.0", Patrick Schmitz,
Ted Wugofski and Warner ten Kate. W3C Note 23 February 1999, <br>
Available at <a
href="http://www.w3.org/TR/NOTE-SYMM-modules">http://www.w3.org/TR/NOTE-SYMM-modules</a>.
Superceded by <a href="#ref-SMIL20-MOD">[SMIL20-MOD]</a> .</p>

<p><strong><a class="normref" name="ref-XHTML10">[XHTML10]</a></strong></p>

<p>"The Extensible HyperText Markup Language: A Reformulation of HTML 4.0 in
XML 1.0". W3C Recommendation 26 January 2000, <br>
Available at <a
href="http://www.w3.org/TR/xhtml1/">http://www.w3.org/TR/xhtml1/</a></p>

<p><strong><a class="normref" name="ref-XLINK">[XLINK]</a></strong></p>

<p>"XML Linking Language (XLink)", S. DeRose, E. Maler, D. Orchard and B.
Trafford. W3C Recommendation 27 June 2001, <br>
Available at <a
href="http://www.w3.org/TR/xlink">http://www.w3.org/TR/xlink</a></p>

<p><strong><a class="normref" name="ref-XMOD">[XMOD]</a></strong></p>

<p>"Modularization of XHTML", Shane McCarron, Murray Altheim, et al. W3C
Recommendation 10 April 2001, <br>
Available at <a
href="http://www.w3.org/TR/xhtml-modularization/">http://www.w3.org/TR/xhtml-modularization</a></p>

<p><strong><a class="normref" name="ref-XSCHEMA">[XSCHEMA]</a></strong></p>

<p>"XML Schema, XML Schema Part 1: Structures". W3C Recommendation 2 May
2001, <br>
Available at <a
href="http://www.w3.org/TR/xmlschema-1/">http://www.w3.org/TR/xmlschema-1/</a></p>

<p></p>
</body>
</html>