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<h1 align="center">Synchronized Multimedia Integration Language (SMIL
2.1)</h1>

<h2>W3C Recommendation  13 December 2005</h2>
<dl>
  <dt>This version:</dt>
    <dd><a href="http://www.w3.org/TR/2005/REC-SMIL2-20051213/">http://www.w3.org/TR/2005/REC-SMIL2-20051213/</a></dd>
  <dt>Latest SMIL 2 version:</dt>
    <dd><a href="http://www.w3.org/TR/SMIL2/">http://www.w3.org/TR/SMIL2/</a></dd>
  <dt>Latest SMIL Recommendation:</dt>
    <dd><a
    href="http://www.w3.org/TR/SMIL/">http://www.w3.org/TR/SMIL/</a></dd>
  <dt>Previous version:</dt>
    <dd><a href="http://www.w3.org/TR/2005/PR-SMIL2-20050927/">http://www.w3.org/TR/2005/PR-SMIL2-20050927/</a></dd>
  <dt>Editors:</dt>
    <dd>Dick Bulterman, CWI - Guido Grassel, Nokia - Jack Jansen, CWI - Antti
      Koivisto, Nokia - Nabil Layaïda, INRIA - Thierry Michel, W3C - Sjoerd
      Mullender, CWI - Daniel Zucker, Access Co., Ltd. </dd>
  <!-- This section is optional and will be ignore during the publication
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</dl>

<p>This document is also available in these non-normative formats: XML.This
document is also available in these non-normative formats: <a
href="http://www.w3.org/TR/2005/REC-SMIL2-20051213/smil21.html">single HTML file</a>, <a
href="http://www.w3.org/TR/2005/REC-SMIL2-20051213/smil21.zip">zip archive</a>.</p>

<p>Please refer to the <a
href="http://www.w3.org/2005/10/REC-SMIL21-20051010-errata.html">errata</a>
for this document, which may include normative corrections.<br>
See also <a
href="http://www.w3.org/2003/03/Translations/byTechnology?technology=SMIL2">translations</a>.</p>

<p class="copyright"><a
href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a>
©2005 <a href="http://www.w3.org/"><acronym
title="World Wide Web Consortium">W3C</acronym></a><sup>®</sup> (<a
href="http://www.csail.mit.edu/"><acronym
title="Massachusetts Institute of Technology">MIT</acronym></a>, <a
href="http://www.ercim.org/"><acronym
title="European Research Consortium for Informatics and Mathematics">ERCIM</acronym></a>,
<a href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. W3C <a
href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a>,
<a
href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">trademark</a>
and <a href="http://www.w3.org/Consortium/Legal/copyright-documents">document
use</a> rules apply.</p>
<hr title="Separator from Header">
</div>

<h2><a name="abstract">Abstract</a></h2>

<p>This document specifies the second version of the Synchronized Multimedia
Integration Language (SMIL, pronounced "smile"). SMIL 2.1 has the following
design goals:</p>
<ul>
  <li>Define an XML-based language that allows authors to write interactive
    multimedia presentations. Using SMIL, an author can describe the temporal
    behaviour of a multimedia presentation, associate hyperlinks with media
    objects and describe the layout of the presentation on a screen.</li>
  <li>Allow reusing of SMIL syntax and semantics in other XML-based
    languages, in particular those who need to represent timing and
    synchronization. For example, SMIL components are used for integrating
    timing into XHTML <span class="normref"><a href="refs.html#ref-XHTML10" rel="biblioentry" class="noxref"><span class="inforef">[XHTML10]</span></a></span> and into SVG
    <span class="normref"><a href="refs.html#ref-SVG" rel="biblioentry" class="noxref"><span class="inforef">[SVG]</span></a></span>.</li>
  <li>Extend the functionalities contained in the SMIL 2.0 <a href="refs.html#ref-SMIL20" rel="biblioentry" class="noxref"><span class="normref">[SMIL20]</span></a> into
    new or revised SMIL 2.1 modules.</li>
  <li>Define new SMIL 2.1 Mobile Profiles incorporating features useful
    within the mobile industry.</li>
</ul>

<h2><a name="status">Status of this document</a></h2>

<p><em>This section describes the status of this document at the time of its
publication. Other documents may supersede this document. A list of current
W3C publications and the latest revision of this technical report can be
found in the <a href="http://www.w3.org/TR/">W3C technical reports index</a>
at http://www.w3.org/TR/.</em></p>

<p>This document is a <a
href="http://www.w3.org/2003/06/Process-20030618/tr.html#RecsW3C">Recommendation</a>
of the W3C. It has been reviewed by W3C Members and other interested parties
and has been endorsed by the Director as a W3C Recommendation. It is a stable
document  and may be used as reference material or cited as a normative
reference from  another document. W3C's role in making the Recommendation is
to draw attention  to the specification and to promote its widespread
deployment. This enhances the functionality and interoperability of the
Web.</p>

<p>This SMIL 2.1 edition is a <em>new</em> version, it extends the
functionalities contained in SMIL 2.0 <a href="refs.html#ref-SMIL20" rel="biblioentry" class="noxref"><span class="normref">[SMIL20]</span></a>, incorporating new features
useful within the mobile industry.<br>
This SMIL 2.1 W3C Recommendation supersedes the <a
href="http://www.w3.org/TR/2005/REC-SMIL2-20050107/">07 January 2005 SMIL 2.0
Recommendation (Second Edition)</a> <a href="refs.html#ref-SMIL20" rel="biblioentry" class="noxref"><span class="normref">[SMIL20]</span></a>.</p>

<p>The SMIL 2.1 <a href="http://www.w3.org/2005/SMIL21/testsuite/">test
suite</a> along with an <a
href="http://www.w3.org/2005/SMIL21/SMIL21-implementation-result.html">implementation
report</a> are publicly released and are intended solely to be used as proof
of SMIL 2.1 implementability. It is only a snapshot of the actual
implementation behaviors at one moment of time, as these implementations may
not be immediately available to the public. The interoperability data is not
intended to be used for assessing or grading the performance of any
individual implementation.</p>

<p>This document has been produced by the <a
href="http://www.w3.org/AudioVideo/Group/">SYMM Working Group</a> as part of
the <a href="http://www.w3.org/AudioVideo/">W3C Synchronized Multimedia
Activity</a>, following the procedures set out for the W3C <a
href="http://www.w3.org/Consortium/Process/">Process</a>. The goals of the
SYMM Working Group are discussed in the <a
href="http://www.w3.org/AudioVideo/2004/symm-wg-charter20040903.html">SYMM
Working Group Charter</a>.</p>

<p>The patent policy for this document is the <a
href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5 February 2004
W3C Patent Policy</a>. Patent disclosures relevant to this specification may
be found on the <a
href="http://www.w3.org/2004/10/10/SMIL21-patent-disclosure.html">SYMM
Working Group's patent disclosure page</a>.</p>

<p>An individual who has actual knowledge of a patent which the individual
believes contains Essential Claim(s) with respect to this specification
should disclose the information in accordance with <a
href="http://www.w3.org/Consortium/Patent-Policy-20040205/#sec-Disclosure">section
6 of the W3C Patent Policy</a>.</p>

<p>The authors of this document are the SYMM Working Group members. Different
parts of the document have different editors.</p>

<p>Please report errors in this document to <a
href="mailto:www-smil@w3.org">www-smil@w3.org</a> - (<a
href="http://lists.w3.org/Archives/Public/www-smil/">public archives</a>)
including the prefix<code>'[SMIL21 REC]'</code> in the subject line.</p>

<div class="toc">
<h2><a name="minitoc">Quick Table of Contents</a></h2>
<ul class="toc">
  <li class="tocline1"><a href="introduction.html" class="tocxref">1. About SMIL 2.1</a>
  <li class="tocline1"><a href="smil-modules.html" class="tocxref">2. The SMIL 2.1 Modules</a>
  <li class="tocline1"><a href="animation.html" class="tocxref">3. The SMIL 2.1 Animation Modules</a>
  <li class="tocline1"><a href="smil-content.html" class="tocxref">4. The SMIL 2.1 Content Control Modules</a>
  <li class="tocline1"><a href="layout.html" class="tocxref">5. The SMIL 2.1 Layout Modules</a>
  <li class="tocline1"><a href="extended-linking.html" class="tocxref">6. The SMIL 2.1 Linking Modules</a>
  <li class="tocline1"><a href="extended-media-object.html" class="tocxref">7. The SMIL 2.1 Media Object Modules</a>
  <li class="tocline1"><a href="metadata.html" class="tocxref">8. The SMIL 2.1 Metainformation Module</a>
  <li class="tocline1"><a href="structure.html" class="tocxref">9. The SMIL 2.1 Structure Module</a>
  <li class="tocline1"><a href="smil-timing.html" class="tocxref">10. The SMIL 2.1 Timing and Synchronization Module</a>
  <li class="tocline1"><a href="smil-timemanip.html" class="tocxref">11. The SMIL 2.1 Time Manipulations Module</a>
  <li class="tocline1"><a href="smil-transitions.html" class="tocxref">12. The SMIL 2.1 Transition Effects Module</a>
  <li class="tocline1"><a href="smil21-profile.html" class="tocxref">13. SMIL 2.1 Language Profile</a>
  <li class="tocline1"><a href="smil21-mobile-profile.html" class="tocxref">14. SMIL 2.1 Mobile Profile</a>
  <li class="tocline1"><a href="smil21-extended-mobile-profile.html" class="tocxref">15. SMIL 2.1 Extended Mobile Profile</a>
  <li class="tocline1"><a href="smil-basic.html" class="tocxref">16. SMIL 2.1 Basic Profile and Scalability Framework</a>
  <li class="tocline1"><a href="smil-DTD.html" class="tocxref">Appendix A. Appendix A. SMIL 2.1 DTDs</a>
  <li class="tocline1"><a href="modules.html" class="tocxref">Appendix B. Index of SMIL 2.1 Modules</a>
  <li class="tocline1"><a href="elements.html" class="tocxref">Appendix C. Index of SMIL 2.1 Elements</a>
  <li class="tocline1"><a href="attributes.html" class="tocxref">Appendix D. Index of SMIL 2.1 Attributes</a>
  <li class="tocline1"><a href="refs.html" class="tocxref">Appendix E. SMIL 2.1 References</a>
</ul>
</div>
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<div class="toc">
<h2><a name="toc">Full Table of Contents</a></h2>
<ul class="toc">
  <li class="tocline1"><a href="introduction.html" class="tocxref">1. About SMIL 2.1</a>
  <ul class="toc">
    <li class="tocline2"><a href="introduction.html#introNS-Introduction" class="tocxref">1.1 Introduction</a>
    <li class="tocline2"><a href="introduction.html#introNS-Introduction-content" class="tocxref">1.2 Content of this Recommendation</a>
    <li class="tocline2"><a href="introduction.html#introNS-Relationsmil20" class="tocxref">1.3 Relation to SMIL 2.0</a>
    <li class="tocline2"><a href="introduction.html#introNS-Changes21" class="tocxref">1.4 Summary of Changes for SMIL 2.1</a>
    <li class="tocline2"><a href="introduction.html#introNS--acknowledgements" class="tocxref">1.5 Acknowledgements</a>
  </ul>
  <li class="tocline1"><a href="smil-modules.html" class="tocxref">2. The SMIL 2.1 Modules</a>
  <ul class="toc">
    <li class="tocline2"><a href="smil-modules.html#smilModulesNSIntroduction" class="tocxref">2.1 Introduction</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-modules.html#smilModulesNSModularizationProfiling" class="tocxref">2.1.1 Modularization and Profiling</a>
    </ul>
    <li class="tocline2"><a href="smil-modules.html#smilModulesSumChanges" class="tocxref">2.2 Summary of Changes for SMIL 2.1</a>
    <li class="tocline2"><a href="smil-modules.html#smilModulesNSSMILModules" class="tocxref">2.3 SMIL 2.1 Modules</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-modules.html#smilModulesNSSMILDOM" class="tocxref">2.3.1 SMIL DOM</a>
    </ul>
    <li class="tocline2"><a href="smil-modules.html#smilModulesNSSMIL21ModuleProfileIdentifiers" class="tocxref">2.4 Identifiers for SMIL 2.1 Modules and Language Profiles</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-modules.html#smilModulesNSSMIL21MimeType" class="tocxref">2.4.1 The SMIL Mime Type</a>
      <li class="tocline3"><a href="smil-modules.html#smilModulesNSSMIL21ModuleXMLNamespace" class="tocxref">2.4.2 XML Namespace Identifier for the SMIL 2.1 Modules</a>
      <li class="tocline3"><a href="smil-modules.html#smilModulesNSSMIL21ModuleIdentifiers" class="tocxref">2.4.3 Identifiers for SMIL 2.1 Modules </a>
      <li class="tocline3"><a href="smil-modules.html#smilModulesNSProfiles" class="tocxref">2.4.4 Identifiers for SMIL 2.1 Profiles and Features</a>
    </ul>
    <li class="tocline2"><a href="smil-modules.html#smilModulesNSSMILConformance" class="tocxref">2.5 SMIL Conformance</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-modules.html#smilModulesNSSMILHostLanguageConformance" class="tocxref">2.5.1 SMIL Host Language Conformance</a>
      <li class="tocline3"><a href="smil-modules.html#smilModulesNSSMILIntegrationSetConformance" class="tocxref">2.5.2 SMIL Integration Set Conformance</a>
      <li class="tocline3"><a href="smil-modules.html#smilModulesNSSMILHostIdentifierReqs" class="tocxref">2.5.3 Requirements on Identifiers for SMIL Host Language Conformant Language Profiles</a>
      <li class="tocline3"><a href="smil-modules.html#smilModulesNSSMILHostErrorHandling" class="tocxref">2.5.4 Error Handling in SMIL Host Language Conformant Documents</a>
      <li class="tocline3"><a href="smil-modules.html#smilModulesNSHandlingSyntaxErrorsinAttributes" class="tocxref">2.5.5 Handling of Syntax errors in Attribute Values</a>
    </ul>
    <li class="tocline2"><a href="smil-modules.html#smilModulesNSDTDCreation" class="tocxref">2.6 Creating a DTD for a Language Profile</a>
  </ul>
  <li class="tocline1"><a href="animation.html" class="tocxref">3. The SMIL 2.1 Animation Modules</a>
  <ul class="toc">
    <li class="tocline2"><a href="animation.html#q1" class="tocxref">3.1 Summary of Changes for SMIL 2.1</a>
    <li class="tocline2"><a href="animation.html#animationNS-Introduction" class="tocxref">3.2 Introduction</a>
    <li class="tocline2"><a href="animation.html#animationNS-AnimationModel" class="tocxref">3.3 Animation Model</a>
    <ul class="toc">
      <li class="tocline3"><a href="animation.html#animationNS-SimpleAnimationFunction" class="tocxref">3.3.1 The simple animation function f(t)</a>
      <li class="tocline3"><a href="animation.html#animationNS-AnimationSymbols" class="tocxref">3.3.2 Summary of symbols used in the semantic descriptions</a>
      <li class="tocline3"><a href="animation.html#animationNS-AnimationSandwichModel" class="tocxref">3.3.3 The animation sandwich model</a>
      <li class="tocline3"><a href="animation.html#AnimationNS-ContinuousMedia" class="tocxref">3.3.4 Animation elements as "continuous media"</a>
      <li class="tocline3"><a href="animation.html#animationNS-AnimationEffectFcn" class="tocxref">3.3.5 The animation effect function F(t,u)</a>
      <ul class="toc">
        <li class="tocline4"><a href="animation.html#animationNS-RepeatingAnim" class="tocxref"> Repeating animations</a>
        <ul class="toc">
          <li class="tocline5"><a href="animation.html#animationNS-RepeatingAnimEx" class="tocxref"> Examples</a>
          <li class="tocline5"><a href="animation.html#animationNS-Accumulate" class="tocxref"> Controlling behavior of repeating animation - Cumulative animation</a>
        </ul>
        <li class="tocline4"><a href="animation.html#animationNS-Fill" class="tocxref"> Freezing animations</a>
      </ul>
      <li class="tocline3"><a href="animation.html#animationNS-AdditiveAnim" class="tocxref">3.3.6 Additive animation</a>
      <ul class="toc">
        <li class="tocline4"><a href="animation.html#animationNS-AddAndCum" class="tocxref"> Additive and Cumulative animation</a>
      </ul>
      <li class="tocline3"><a href="animation.html#animationNS-Restart" class="tocxref">3.3.7 Restarting animations</a>
      <li class="tocline3"><a href="animation.html#animationNS-AnimationFunctionValueDetails" class="tocxref">3.3.8 Animation function value details</a>
      <ul class="toc">
        <li class="tocline4"><a href="animation.html#animationNS-InterpolationAndIndefSimpleDur" class="tocxref"> Interpolation and indefinite simple durations</a>
      </ul>
    </ul>
    <li class="tocline2"><a href="animation.html#animationNS-OverviewBasic" class="tocxref">3.4 Overview of the SMIL 2.1 BasicAnimation Module</a>
    <li class="tocline2"><a href="animation.html#animationNS-CommonAttrs" class="tocxref">3.5 SMIL 2.1 BasicAnimation Module Common Attributes</a>
    <ul class="toc">
      <li class="tocline3"><a href="animation.html#animationNS-SpecifyingAnimationTarget" class="tocxref">3.5.1 Specifying the animation target</a>
      <ul class="toc">
        <li class="tocline4"><a href="animation.html#animationNS-SpecifyingTargetAttribute" class="tocxref"> The target attribute</a>
        <li class="tocline4"><a href="animation.html#animationNS-SpecifyingTargetElement" class="tocxref"> The target element</a>
      </ul>
      <li class="tocline3"><a href="animation.html#animationNS-SpecifyingAnimationFunction" class="tocxref">3.5.2 Specifying the simple animation function f(t)</a>
      <ul class="toc">
        <li class="tocline4"><a href="animation.html#animationNS-InterpolationIllus" class="tocxref"> Interpolation modes illustrated</a>
        <li class="tocline4"><a href="animation.html#animationNS-InterpolationExamples" class="tocxref"> Examples of calcMode</a>
      </ul>
      <li class="tocline3"><a href="animation.html#animationNS-SpecifyingAnimationEffect" class="tocxref">3.5.3 Specifying the animation effect function F(t,u)</a>
      <li class="tocline3"><a href="animation.html#AnimationNS-FromToBy" class="tocxref">3.5.4 Simple animation functions specified by from, to and by</a>
      <ul class="toc">
        <li class="tocline4"><a href="animation.html#animationNS-ToAnimation" class="tocxref"> <em>To animation</em></a>
      </ul>
    </ul>
    <li class="tocline2"><a href="animation.html#animationNS-BasicAnimationElements" class="tocxref">3.6 SMIL 2.1 BasicAnimation Elements</a>
    <ul class="toc">
      <li class="tocline3"><a href="animation.html#animationNS-animateElement" class="tocxref">3.6.1 The animate element</a>
      <li class="tocline3"><a href="animation.html#animationNS-setElement" class="tocxref">3.6.2 The set element</a>
      <li class="tocline3"><a href="animation.html#animationNS-animateMotionElement" class="tocxref">3.6.3 The animateMotion element</a>
      <li class="tocline3"><a href="animation.html#animationNS-animateColorElement" class="tocxref">3.6.4 The animateColor element</a>
    </ul>
    <li class="tocline2"><a href="animation.html#animationNS-BasicAnimDetails" class="tocxref">3.7 SMIL 2.1 BasicAnimation Module Details</a>
    <ul class="toc">
      <li class="tocline3"><a href="animation.html#animationNS-IntegratingSMILAnimBasic" class="tocxref">3.7.1 BasicAnimation integration requirements</a>
      <ul class="toc">
        <li class="tocline4"><a href="animation.html#animationNS-Integrating-ConstraintsOnTargets" class="tocxref"> Required definitions and constraints on animation targets</a>
        <ul class="toc">
          <li class="tocline5"><a href="animation.html#animationNS-SpecTarget" class="tocxref"> Specifying the target element</a>
          <li class="tocline5"><a href="animation.html#animationNS-TargetIssues" class="tocxref"> Target attribute issues</a>
        </ul>
        <li class="tocline4"><a href="animation.html#animationNS-Integrating" class="tocxref"> Integrating animateMotion functionality</a>
      </ul>
      <li class="tocline3"><a href="animation.html#AnimationNS-BasicDTD" class="tocxref">3.7.2 Document type definition (DTD) for the BasicAnimation module</a>
    </ul>
    <li class="tocline2"><a href="animation.html#animationNS-OverviewSpline" class="tocxref">3.8 Overview of the SMIL 2.1 SplineAnimation Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="animation.html#animationNS-SplineAttrs" class="tocxref">3.8.1 SMIL 2.1 SplineAnimation Module Attributes</a>
      <ul class="toc">
        <li class="tocline4"><a href="animation.html#animationNS-AnimFuncCalcModeSpline" class="tocxref"> Spline animation function calculation mode</a>
        <ul class="toc">
          <li class="tocline5"><a href="animation.html#animationNS-InterpolationExamplesAdvanced" class="tocxref"> Examples of advanced uses of calcMode</a>
          <li class="tocline5"><a href="animation.html#animationNS-InterpolationKeysplines" class="tocxref"> Interpolation with keySplines</a>
        </ul>
      </ul>
      <li class="tocline3"><a href="animation.html#animationNS-SplineAnimationElements" class="tocxref">3.8.2 SMIL 2.1 SplineAnimation Module Elements</a>
      <li class="tocline3"><a href="animation.html#animationNS-animateElementAdv" class="tocxref">3.8.3 The spline animate element</a>
      <li class="tocline3"><a href="animation.html#animationNS-animateMotionElementAdv" class="tocxref">3.8.4 The spline animateMotion element</a>
      <li class="tocline3"><a href="animation.html#animationNS-animateColorElementAdv" class="tocxref">3.8.5 The spline animateColor element</a>
    </ul>
    <li class="tocline2"><a href="animation.html#animationNS-SplineAnimDetails" class="tocxref">3.9 SMIL 2.1 SplineAnimation Module Details</a>
    <ul class="toc">
      <li class="tocline3"><a href="animation.html#animationNS-IntegratingSplineAnim" class="tocxref">3.9.1 SplineAnimation integration requirements</a>
      <li class="tocline3"><a href="animation.html#AnimationNS-SplineDTD" class="tocxref">3.9.2 Document type definition (DTD) for the SplineAnimation module</a>
    </ul>
    <li class="tocline2"><a href="animation.html#animationNS-CommonIntegReqs" class="tocxref">3.10 Common Animation Integration Requirements</a>
    <ul class="toc">
      <li class="tocline3"><a href="animation.html#animationNS-IntegratingSMILAnimCommon" class="tocxref">3.10.1 Integration requirements</a>
      <ul class="toc">
        <li class="tocline4"><a href="animation.html#AnimationNS-Extend" class="tocxref"> Extending Animation</a>
        <li class="tocline4"><a href="animation.html#animationNS-Integrating-ConstraintsOnAttributes" class="tocxref"> Constraints on manipulating animation elements</a>
        <li class="tocline4"><a href="animation.html#animationNS-AnimationSyntaxErrors" class="tocxref"> Handling syntax errors</a>
        <li class="tocline4"><a href="animation.html#animationNS-Integration-ErrorHandling" class="tocxref"> Error handling semantics</a>
      </ul>
    </ul>
  </ul>
  <li class="tocline1"><a href="smil-content.html" class="tocxref">4. The SMIL 2.1 Content Control Modules</a>
  <ul class="toc">
    <li class="tocline2"><a href="smil-content.html#q1" class="tocxref">4.1 Summary of Changes for SMIL 2.1</a>
    <li class="tocline2"><a href="smil-content.html#ContentControlNS-Introduction" class="tocxref">4.2 Introduction</a>
    <li class="tocline2"><a href="smil-content.html#ContentControlNS-BasicContent" class="tocxref">4.3 The SMIL 2.1 BasicContentControl Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-content.html#ContentControlNS-SyntaxSemantics-BasicContent" class="tocxref">4.3.1 SMIL 2.1 BasicContentControl Module Overview</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-content.html#ContentControlNS-PredefinedSystemTest" class="tocxref"> Predefined <span class="adef">System Test</span> Attributes</a>
        <li class="tocline4"><a href="smil-content.html#q6" class="tocxref"> The <span class="einst-switch einst">switch</span> element</a>
        <li class="tocline4"><a href="smil-content.html#ContentControlNS-InlineTestAttributes" class="tocxref"> System Test Attribute In-Line Use</a>
        <li class="tocline4"><a href="smil-content.html#q8" class="tocxref"> Examples of Switch and Test Attribute Use</a>
      </ul>
      <li class="tocline3"><a href="smil-content.html#ContentControlNS-BasicElementsAttr" class="tocxref">4.3.2 Elements and Attributes</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-content.html#edef-switch" class="tocxref"> The <span class="edef">switch</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-content.html#q11" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="smil-content.html#q12" class="tocxref"> Element content</a>
        </ul>
        <li class="tocline4"><a href="smil-content.html#ContentControlNS-PredefinedTestAttributes" class="tocxref"> Predefined Test Attributes</a>
      </ul>
      <li class="tocline3"><a href="smil-content.html#q14" class="tocxref">4.3.3 Integration Requirements for the BasicContentControl Module</a>
      <li class="tocline3"><a href="smil-content.html#q15" class="tocxref">4.3.4 Document Type Definition (DTD) for the BasicContentControl Module</a>
    </ul>
    <li class="tocline2"><a href="smil-content.html#ContentControlNS-UserGroups" class="tocxref">4.4 The SMIL 2.1 CustomTestAttributes Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-content.html#ContentControlNS-Overview-UserGroups" class="tocxref">4.4.1 SMIL 2.1 CustomTestAttributes Module Overview</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-content.html#q18" class="tocxref"> Example Use</a>
        <li class="tocline4"><a href="smil-content.html#ContentControlNS-customTest-rules" class="tocxref"> Rules for Setting Values</a>
      </ul>
      <li class="tocline3"><a href="smil-content.html#ContentControlNS-ElementsAttr-UserGroups" class="tocxref">4.4.2 Elements and Attributes</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-content.html#edef-customAttributes" class="tocxref"> The <span class="edef">customAttributes</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-content.html#q22" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="smil-content.html#q23" class="tocxref"> Element content</a>
        </ul>
        <li class="tocline4"><a href="smil-content.html#edef-customTest" class="tocxref"> The <span class="edef">customTest</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-content.html#q25" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="smil-content.html#q26" class="tocxref"> Element content</a>
        </ul>
        <li class="tocline4"><a href="smil-content.html#ContentControlNS-CustomTestAttr" class="tocxref"> The <span class="ainst-customTest ainst">customTest</span> attribute</a>
      </ul>
      <li class="tocline3"><a href="smil-content.html#q28" class="tocxref">4.4.3 Integration Requirements for the CustomTestAttribute Module</a>
      <li class="tocline3"><a href="smil-content.html#q29" class="tocxref">4.4.4 Document Type Definition (DTD) for the CustomTestAttribute Module</a>
    </ul>
    <li class="tocline2"><a href="smil-content.html#ContentControlNS-PrefetchControl" class="tocxref">4.5 The SMIL 2.1 PrefetchControl Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-content.html#ContentControlNS-Overview-PrefetchControl" class="tocxref">4.5.1 SMIL 2.1 PrefetchControl Module Overview</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-content.html#q16" class="tocxref"> Examples</a>
      </ul>
      <li class="tocline3"><a href="smil-content.html#ContentControlNS-ElementAttr-Prefetch" class="tocxref">4.5.2 Elements and Attributes</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-content.html#edef-prefetch" class="tocxref"> The <span class="edef">prefetch</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-content.html#q35" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="smil-content.html#q36" class="tocxref"> Attribute value syntax</a>
        </ul>
      </ul>
      <li class="tocline3"><a href="smil-content.html#q37" class="tocxref">4.5.3 Integration Requirements for the PrefetchControl Module</a>
      <li class="tocline3"><a href="smil-content.html#q38" class="tocxref">4.5.4 Document Type Definition (DTD) for the PrefetchControl Module</a>
    </ul>
    <li class="tocline2"><a href="smil-content.html#ContentControlNS-SkipContent" class="tocxref">4.6 The SMIL 2.1 SkipContentControl Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-content.html#ContentControlNS-SyntaxSemantics-SkipContent" class="tocxref">4.6.1 SMIL 2.1 SkipContentControl Module Overview</a>
      <li class="tocline3"><a href="smil-content.html#ContentControlNS-ElementAttr-SkipContent" class="tocxref">4.6.2 Elements and Attributes</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-content.html#ContentControlNS-SkipContentElement" class="tocxref"> Element definition</a>
        <li class="tocline4"><a href="smil-content.html#ContentControlNS-SkipContentAttribute" class="tocxref"> The <span class="ainst-skip-content ainst">skip-content</span> attribute</a>
      </ul>
      <li class="tocline3"><a href="smil-content.html#q44" class="tocxref">4.6.3 Integration Requirements for the SkipContentControl Module</a>
    </ul>
  </ul>
  <li class="tocline1"><a href="layout.html" class="tocxref">5. The SMIL 2.1 Layout Modules</a>
  <ul class="toc">
    <li class="tocline2"><a href="layout.html#LayoutModuleNS-SummaryOfChanges" class="tocxref">5.1 Overview and Summary of Changes for SMIL 2.1</a>
    <li class="tocline2"><a href="layout.html#q2" class="tocxref">5.2 Introduction</a>
    <ul class="toc">
      <li class="tocline3"><a href="layout.html#q3" class="tocxref">5.2.1 Module Overview</a>
      <li class="tocline3"><a href="layout.html#q4" class="tocxref">5.2.2 Support for Multiple Layout Models</a>
    </ul>
    <li class="tocline2"><a href="layout.html#q5" class="tocxref">5.3 The SMIL 2.1 BasicLayout Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="layout.html#q6" class="tocxref">5.3.1 Changes for SMIL 2.1</a>
      <li class="tocline3"><a href="layout.html#q7" class="tocxref">5.3.2 Overview</a>
      <li class="tocline3"><a href="layout.html#q8" class="tocxref">5.3.3 Elements and Attributes</a>
      <ul class="toc">
        <li class="tocline4"><a href="layout.html#edef-layout" class="tocxref"> The <span class="edef">layout</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="layout.html#q10" class="tocxref"> Element Attributes</a>
          <li class="tocline5"><a href="layout.html#q11" class="tocxref"> Element content</a>
        </ul>
        <li class="tocline4"><a href="layout.html#edef-region" class="tocxref"> The <span class="edef">region</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="layout.html#q13" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="layout.html#q14" class="tocxref"> Element examples</a>
        </ul>
        <li class="tocline4"><a href="layout.html#edef-root-layout" class="tocxref"> The <span class="edef">root-layout</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="layout.html#q16" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="layout.html#q17" class="tocxref"> Element content</a>
          <li class="tocline5"><a href="layout.html#q18" class="tocxref"> Element examples</a>
        </ul>
        <li class="tocline4"><a href="layout.html#adef-region" class="tocxref"> The <span class="adef">region</span> attribute</a>
      </ul>
      <li class="tocline3"><a href="layout.html#q20" class="tocxref">5.3.4 SMIL BasicLayout Implementation and Integration</a>
      <ul class="toc">
        <li class="tocline4"><a href="layout.html#q21" class="tocxref"> Implementation Details</a>
        <li class="tocline4"><a href="layout.html#q22" class="tocxref"> Integration Requirements</a>
      </ul>
      <li class="tocline3"><a href="layout.html#q23" class="tocxref">5.3.5 Document Type Definition (DTD) for the BasicLayout Module</a>
    </ul>
    <li class="tocline2"><a href="layout.html#q24" class="tocxref">5.4 The SMIL 2.1 AudioLayout Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="layout.html#q25" class="tocxref">5.4.1 Changes for SMIL 2.1</a>
      <li class="tocline3"><a href="layout.html#q26" class="tocxref">5.4.2 Overview</a>
      <li class="tocline3"><a href="layout.html#q27" class="tocxref">5.4.3 Audio Volume Control</a>
      <li class="tocline3"><a href="layout.html#q28" class="tocxref">5.4.4 Elements and Attributes</a>
      <ul class="toc">
        <li class="tocline4"><a href="layout.html#q29" class="tocxref"> The <span class="einst">region</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="layout.html#q30" class="tocxref"> Element attributes</a>
        </ul>
      </ul>
      <li class="tocline3"><a href="layout.html#q31" class="tocxref">5.4.5 Integration Requirements for the AudioLayout Module</a>
      <li class="tocline3"><a href="layout.html#q32" class="tocxref">5.4.6 Document Type Definition (DTD) for the AudioLayout Module</a>
    </ul>
    <li class="tocline2"><a href="layout.html#q33" class="tocxref">5.5 The SMIL 2.1 MultiWindowLayout Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="layout.html#q34" class="tocxref">5.5.1 Changes for SMIL 2.1</a>
      <li class="tocline3"><a href="layout.html#q35" class="tocxref">5.5.2 Overview</a>
      <li class="tocline3"><a href="layout.html#q36" class="tocxref">5.5.3 Elements and Attributes</a>
      <ul class="toc">
        <li class="tocline4"><a href="layout.html#edef-topLayout" class="tocxref"> The <span class="edef">topLayout</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="layout.html#q38" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="layout.html#q39" class="tocxref"> Element content</a>
          <li class="tocline5"><a href="layout.html#q40" class="tocxref"> Element examples</a>
        </ul>
        <li class="tocline4"><a href="layout.html#q41" class="tocxref"> The <span class="einst">layout</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="layout.html#q42" class="tocxref"> Element content</a>
        </ul>
      </ul>
      <li class="tocline3"><a href="layout.html#q43" class="tocxref">5.5.4 MultiWindowLayout Module Events</a>
      <li class="tocline3"><a href="layout.html#q44" class="tocxref">5.5.5 Implementation and Integration Requirements for the MultiWindowLayout Module</a>
      <ul class="toc">
        <li class="tocline4"><a href="layout.html#q45" class="tocxref"> Implementation details</a>
      </ul>
      <li class="tocline3"><a href="layout.html#q46" class="tocxref">5.5.6 Integration Requirements for the MultiWindowLayout Module</a>
      <li class="tocline3"><a href="layout.html#q47" class="tocxref">5.5.7 Document Type Definition (DTD) for the MultiWindowLayout Module</a>
    </ul>
    <li class="tocline2"><a href="layout.html#q48" class="tocxref">5.6 The SMIL 2.1 SubRegionLayout Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="layout.html#q49" class="tocxref">5.6.1 Changes for SMIL 2.1</a>
      <li class="tocline3"><a href="layout.html#q50" class="tocxref">5.6.2 Overview</a>
      <li class="tocline3"><a href="layout.html#q51" class="tocxref">5.6.3 Elements and attributes</a>
      <ul class="toc">
        <li class="tocline4"><a href="layout.html#q52" class="tocxref"> The <span class="einst">region</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="layout.html#q53" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="layout.html#q54" class="tocxref"> Element content</a>
        </ul>
        <li class="tocline4"><a href="layout.html#q55" class="tocxref"> The <span class="einst">ref</span> element (and its synonyms)</a>
        <ul class="toc">
          <li class="tocline5"><a href="layout.html#q56" class="tocxref"> Element attributes</a>
        </ul>
      </ul>
      <li class="tocline3"><a href="layout.html#q57" class="tocxref">5.6.4 SubRegionLayout Module Events</a>
      <li class="tocline3"><a href="layout.html#q58" class="tocxref">5.6.5 SubRegionLayout Implementation and Integration</a>
      <ul class="toc">
        <li class="tocline4"><a href="layout.html#q59" class="tocxref"> Implementation Details</a>
        <li class="tocline4"><a href="layout.html#q60" class="tocxref"> Integration Requirements for the SubRegionLayout Module</a>
      </ul>
      <li class="tocline3"><a href="layout.html#q61" class="tocxref">5.6.6 Document Type Definition (DTD) for the SubRegionLayout Module</a>
    </ul>
    <li class="tocline2"><a href="layout.html#q62" class="tocxref">5.7 AlignmentLayout Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="layout.html#q63" class="tocxref">5.7.1 Changes for SMIL 2.1</a>
      <li class="tocline3"><a href="layout.html#q64" class="tocxref">5.7.2 Overview</a>
      <li class="tocline3"><a href="layout.html#q65" class="tocxref">5.7.3 Elements and Attributes for the AlignmentLayout Module</a>
      <ul class="toc">
        <li class="tocline4"><a href="layout.html#q66" class="tocxref"> The layout element</a>
        <ul class="toc">
          <li class="tocline5"><a href="layout.html#q67" class="tocxref"> Element content</a>
        </ul>
        <li class="tocline4"><a href="layout.html#edef-regPoint" class="tocxref"> The <span class="edef">regPoint</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="layout.html#q69" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="layout.html#q70" class="tocxref"> Element content</a>
        </ul>
        <li class="tocline4"><a href="layout.html#q71" class="tocxref"> The <span class="einst">region</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="layout.html#q72" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="layout.html#q73" class="tocxref"> Element content</a>
        </ul>
        <li class="tocline4"><a href="layout.html#q74" class="tocxref"> The <span class="einst">ref</span> element (and its synonyms)</a>
        <ul class="toc">
          <li class="tocline5"><a href="layout.html#q75" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="layout.html#q76" class="tocxref"> Element content</a>
        </ul>
      </ul>
      <li class="tocline3"><a href="layout.html#q77" class="tocxref">5.7.4 AlignmentLayout Module Events</a>
      <li class="tocline3"><a href="layout.html#q78" class="tocxref">5.7.5 SMIL AlignmentLayout Implementation and Integration</a>
      <ul class="toc">
        <li class="tocline4"><a href="layout.html#q79" class="tocxref"> Implementation Details</a>
        <li class="tocline4"><a href="layout.html#q80" class="tocxref"> Integration Requirements</a>
      </ul>
      <li class="tocline3"><a href="layout.html#q81" class="tocxref">5.7.6 Document Type Definition (DTD) for the AlignmentLayout Module</a>
    </ul>
    <li class="tocline2"><a href="layout.html#q82" class="tocxref">5.8 BackgroundTilingLayout Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="layout.html#q83" class="tocxref">5.8.1 Changes for SMIL 2.1</a>
      <li class="tocline3"><a href="layout.html#q84" class="tocxref">5.8.2 Overview</a>
      <li class="tocline3"><a href="layout.html#q85" class="tocxref">5.8.3 Elements and Attributes for the BackgroundTilingLayout Module</a>
      <ul class="toc">
        <li class="tocline4"><a href="layout.html#q86" class="tocxref"> The <span class="einst">region</span> Element</a>
        <li class="tocline4"><a href="layout.html#q87" class="tocxref"> The <span class="einst">root-layout</span> Element</a>
        <li class="tocline4"><a href="layout.html#q88" class="tocxref"> The <span class="einst">topLayout</span> Element</a>
        <ul class="toc">
          <li class="tocline5"><a href="layout.html#q89" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="layout.html#q90" class="tocxref"> Element content</a>
        </ul>
      </ul>
      <li class="tocline3"><a href="layout.html#q91" class="tocxref">5.8.4 BackgroundTilingLayout Module Events</a>
      <li class="tocline3"><a href="layout.html#q92" class="tocxref">5.8.5 SMIL BackgroundTilingLayout Implementation and Integration</a>
      <ul class="toc">
        <li class="tocline4"><a href="layout.html#q93" class="tocxref"> Implementation details</a>
        <li class="tocline4"><a href="layout.html#q94" class="tocxref"> Integration Requirements</a>
      </ul>
      <li class="tocline3"><a href="layout.html#q95" class="tocxref">5.8.6 Document Type Definition (DTD) for the BackgroundTilingLayout Module</a>
    </ul>
    <li class="tocline2"><a href="layout.html#q96" class="tocxref">5.9 OverrideLayout Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="layout.html#q97" class="tocxref">5.9.1 Changes for SMIL 2.1</a>
      <li class="tocline3"><a href="layout.html#q98" class="tocxref">5.9.2 Overview</a>
      <li class="tocline3"><a href="layout.html#q99" class="tocxref">5.9.3 Elements and Attributes for the OverrideLayout Module</a>
      <ul class="toc">
        <li class="tocline4"><a href="layout.html#q100" class="tocxref"> The ref Element</a>
        <ul class="toc">
          <li class="tocline5"><a href="layout.html#q101" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="layout.html#q102" class="tocxref"> Element content</a>
        </ul>
      </ul>
      <li class="tocline3"><a href="layout.html#q103" class="tocxref">5.9.4 OverrideLayout Module Events</a>
      <li class="tocline3"><a href="layout.html#q104" class="tocxref">5.9.5 SMIL OverrideLayout Implementation and Integration</a>
      <ul class="toc">
        <li class="tocline4"><a href="layout.html#q105" class="tocxref"> Implementation Details</a>
        <li class="tocline4"><a href="layout.html#q106" class="tocxref"> Integration Requirements</a>
      </ul>
      <li class="tocline3"><a href="layout.html#q107" class="tocxref">5.9.6 Document Type Definition (DTD) for the OverrideLayout Module</a>
    </ul>
  </ul>
  <li class="tocline1"><a href="extended-linking.html" class="tocxref">6. The SMIL 2.1 Linking Modules</a>
  <ul class="toc">
    <li class="tocline2"><a href="extended-linking.html#q1" class="tocxref">6.1 Summary of Changes for SMIL 2.1</a>
    <li class="tocline2"><a href="extended-linking.html#SMILLinking-Introduction" class="tocxref">6.2 Introduction</a>
    <li class="tocline2"><a href="extended-linking.html#SMILLinking-Relationship-to-XML-Linking" class="tocxref">6.3 Relationship with Other XML Linking-related Formats</a>
    <ul class="toc">
      <li class="tocline3"><a href="extended-linking.html#SMILLinking-Relationship-to-XPointer" class="tocxref">6.3.1 Relationship with XPointer</a>
      <li class="tocline3"><a href="extended-linking.html#SMILLinking-Relationship-to-XLink" class="tocxref">6.3.2 Relationship with XLink</a>
      <li class="tocline3"><a href="extended-linking.html#SMILLinking-Relationship-to-XML-Base" class="tocxref">6.3.3 Relationship with XML Base</a>
      <li class="tocline3"><a href="extended-linking.html#SMILLinking-Relationship-to-XHTML" class="tocxref">6.3.4 Relationship with XHTML</a>
    </ul>
    <li class="tocline2"><a href="extended-linking.html#SMILLinking-Into" class="tocxref">6.4 Linking into SMIL 2.1 Documents</a>
    <ul class="toc">
      <li class="tocline3"><a href="extended-linking.html#SMILLinking-Embed" class="tocxref">6.4.1 Handling of Links in Embedded Documents</a>
      <li class="tocline3"><a href="extended-linking.html#SMILLinking-Error" class="tocxref">6.4.2 Error Handling</a>
    </ul>
    <li class="tocline2"><a href="extended-linking.html#SMILLinking-LinkingAttributes" class="tocxref">6.5 SMIL 2.1 LinkingAttributes Module</a>
    <li class="tocline2"><a href="extended-linking.html#SMILLinking-BasicLinking" class="tocxref">6.6 SMIL 2.1 BasicLinking Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="extended-linking.html#SMILLinking-A" class="tocxref">6.6.1 The <span class="edef">a</span> Element</a>
      <li class="tocline3"><a href="extended-linking.html#SMILLinking-Area" class="tocxref">6.6.2 The <span class="edef">area</span> Element</a>
    </ul>
    <li class="tocline2"><a href="extended-linking.html#SMILLinking-ObjectLinking" class="tocxref">6.7 SMIL 2.1 ObjectLinking Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="extended-linking.html#SMILLinking-Fragment" class="tocxref">6.7.1 The <span class="adef">fragment</span> Attribute</a>
    </ul>
  </ul>
  <li class="tocline1"><a href="extended-media-object.html" class="tocxref">7. The SMIL 2.1 Media Object Modules</a>
  <ul class="toc">
    <li class="tocline2"><a href="extended-media-object.html#SMILMedia-Introduction" class="tocxref">7.1 Overview and Summary of Changes for SMIL 2.1</a>
    <li class="tocline2"><a href="extended-media-object.html#media-Introduction" class="tocxref">7.2 Introduction</a>
    <li class="tocline2"><a href="extended-media-object.html#media-Definitions" class="tocxref">7.3 Definitions</a>
    <li class="tocline2"><a href="extended-media-object.html#media-BasicMedia" class="tocxref">7.4 SMIL BasicMedia Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="extended-media-object.html#edef-ref" class="tocxref">7.4.1 Media Object Elements - <span class="edef">ref</span>, and its synonyms <span class="edef">animation</span>, <span class="edef">audio</span>, <span class="edef">img</span>, <span class="edef">text</span>, <span class="edef">textstream</span> and <span class="edef">video</span></a>
      <li class="tocline3"><a href="extended-media-object.html#media-BasicMedia-integration" class="tocxref">7.4.2 Integration Requirements</a>
    </ul>
    <li class="tocline2"><a href="extended-media-object.html#media-MediaParam" class="tocxref">7.5 SMIL MediaParam Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="extended-media-object.html#edef-param" class="tocxref">7.5.1 Media object initialization: the <span class="edef"> param</span> element</a>
      <li class="tocline3"><a href="extended-media-object.html#edef-paramGroup" class="tocxref">7.5.2 The <span class="edef">paramGroup</span> element</a>
      <li class="tocline3"><a href="extended-media-object.html#q10" class="tocxref">7.5.3 Element Attributes for All Media Objects</a>
      <li class="tocline3"><a href="extended-media-object.html#media-MediaParam-integration" class="tocxref">7.5.4 Integration Requirements</a>
    </ul>
    <li class="tocline2"><a href="extended-media-object.html#media-MediaClipping" class="tocxref">7.6 SMIL MediaClipping Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="extended-media-object.html#media-MediaClipping-attributes" class="tocxref">7.6.1 MediaClipping Attributes</a>
    </ul>
    <li class="tocline2"><a href="extended-media-object.html#media-MediaClipMarkers" class="tocxref">7.7 SMIL MediaClipMarkers Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="extended-media-object.html#media-MediaClipMarkers-attributes" class="tocxref">7.7.1 MediaClipMarkers Attribute Extensions</a>
    </ul>
    <li class="tocline2"><a href="extended-media-object.html#media-BrushMedia" class="tocxref">7.8 SMIL BrushMedia Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="extended-media-object.html#edef-brush" class="tocxref">7.8.1 The <span class="edef">brush</span> element</a>
      <li class="tocline3"><a href="extended-media-object.html#q18" class="tocxref">7.8.2 Integration Requirements</a>
    </ul>
    <li class="tocline2"><a href="extended-media-object.html#media-MediaAccessibility" class="tocxref">7.9 SMIL MediaAccessibility Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="extended-media-object.html#media-MediaAccessibility-attributes" class="tocxref">7.9.1 MediaAccessibility Attributes</a>
    </ul>
    <li class="tocline2"><a href="extended-media-object.html#media-MediaDescription" class="tocxref">7.10 SMIL MediaDescription Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="extended-media-object.html#media-MediaDescription-attributes" class="tocxref">7.10.1 MediaDescription Attributes</a>
    </ul>
    <li class="tocline2"><a href="extended-media-object.html#media-appendices" class="tocxref">7.11 Appendices</a>
    <ul class="toc">
      <li class="tocline3"><a href="extended-media-object.html#media-changes" class="tocxref">7.11.1 Appendix A: Changes to SMIL 1.0 Media Object Attributes</a>
      <ul class="toc">
        <li class="tocline4"><a href="extended-media-object.html#q25" class="tocxref"> clipBegin, clipEnd, clip-begin, clip-end</a>
        <li class="tocline4"><a href="extended-media-object.html#q26" class="tocxref"> Handling of new clipBegin/clipEnd syntax in SMIL 1.0 software</a>
        <li class="tocline4"><a href="extended-media-object.html#q27" class="tocxref"> New Accessibility Attributes</a>
        <li class="tocline4"><a href="extended-media-object.html#q28" class="tocxref"> New Advanced Media Attributes</a>
      </ul>
      <li class="tocline3"><a href="extended-media-object.html#media-changes-elements" class="tocxref">7.11.2 Appendix B: Changes to SMIL 1.0 Media Object Elements</a>
      <ul class="toc">
        <li class="tocline4"><a href="extended-media-object.html#media-changes-newchildren" class="tocxref"> New child elements for media objects</a>
        <li class="tocline4"><a href="extended-media-object.html#q19" class="tocxref"> The  <span class="einst">param</span> and <span class="einst">paramGroup</span> elements</a>
        <li class="tocline4"><a href="extended-media-object.html#media-Brush-Element-def" class="tocxref"> The  <span class="einst-brush einst">brush</span> element</a>
      </ul>
    </ul>
  </ul>
  <li class="tocline1"><a href="metadata.html" class="tocxref">8. The SMIL 2.1 Metainformation Module</a>
  <ul class="toc">
    <li class="tocline2"><a href="metadata.html#q1" class="tocxref">8.1 Summary of Changes for SMIL 2.1</a>
    <li class="tocline2"><a href="metadata.html#smilMetadataNS-introduction" class="tocxref">8.2 Introduction</a>
    <li class="tocline2"><a href="metadata.html#q3" class="tocxref">8.3 Overview of the SMIL 2.1 Metainformation module</a>
    <ul class="toc">
      <li class="tocline3"><a href="metadata.html#smilMetadataNS-meta-element" class="tocxref">8.3.1 Compatibility with SMIL 1.0</a>
      <li class="tocline3"><a href="metadata.html#smilMetadataNS-extensions" class="tocxref">8.3.2 Extensions to SMIL 1.0</a>
      <li class="tocline3"><a href="metadata.html#q6" class="tocxref">8.3.3 Multiple description schemes</a>
    </ul>
    <li class="tocline2"><a href="metadata.html#q7" class="tocxref">8.4 SMIL 2.1 Metainformation Module Syntax and Semantics</a>
    <ul class="toc">
      <li class="tocline3"><a href="metadata.html#edef-meta" class="tocxref">8.4.1 The <span class="edef">meta</span> element</a>
      <li class="tocline3"><a href="metadata.html#edef-metadata" class="tocxref">8.4.2 The <span class="edef">metadata</span> element</a>
    </ul>
    <li class="tocline2"><a href="metadata.html#smilMetadataNS-example" class="tocxref">8.5 An Example</a>
  </ul>
  <li class="tocline1"><a href="structure.html" class="tocxref">9. The SMIL 2.1 Structure Module</a>
  <ul class="toc">
    <li class="tocline2"><a href="structure.html#q1" class="tocxref">9.1 Summary of Changes for SMIL 2.1</a>
    <li class="tocline2"><a href="structure.html#smilStructureNS-Introduction" class="tocxref">9.2 Introduction</a>
    <li class="tocline2"><a href="structure.html#smilStructureNS-SyntaxSemantics" class="tocxref">9.3 The SMIL 2.1 Structure Module Syntax and Semantics</a>
    <ul class="toc">
      <li class="tocline3"><a href="structure.html#smilStructureNS--ElementsAndAttributes" class="tocxref">9.3.1 Elements and attributes</a>
      <ul class="toc">
        <li class="tocline4"><a href="structure.html#edef-smil" class="tocxref"> The <span class="edef">smil</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="structure.html#q6" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="structure.html#q7" class="tocxref"> Element content</a>
        </ul>
        <li class="tocline4"><a href="structure.html#edef-head" class="tocxref"> The <span class="edef">head</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="structure.html#q9" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="structure.html#q10" class="tocxref"> Element content</a>
        </ul>
        <li class="tocline4"><a href="structure.html#edef-body" class="tocxref"> The <span class="edef">body</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="structure.html#q12" class="tocxref"> Element attributes</a>
          <li class="tocline5"><a href="structure.html#q13" class="tocxref"> Element content</a>
        </ul>
      </ul>
    </ul>
    <li class="tocline2"><a href="structure.html#smilStructureNS-Integration" class="tocxref">9.4 Integrating the SMIL Structure Module</a>
  </ul>
  <li class="tocline1"><a href="smil-timing.html" class="tocxref">10. The SMIL 2.1 Timing and Synchronization Module</a>
  <ul class="toc">
    <li class="tocline2"><a href="smil-timing.html#SMILTiming-Changes-2.1" class="tocxref">10.1 Overview and Summary of Changes for SMIL 2.1</a>
    <li class="tocline2"><a href="smil-timing.html#Timing-Introduction" class="tocxref">10.2 Introduction</a>
    <li class="tocline2"><a href="smil-timing.html#Timing-Overview" class="tocxref">10.3  Overview of SMIL timing</a>
    <li class="tocline2"><a href="smil-timing.html#Timing-LanguageDefinition" class="tocxref">10.4 Language definition</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-timing.html#Timing-Attributes" class="tocxref">10.4.1 Attributes</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-timing.html#Timing-BasicTiming" class="tocxref"> The <span class="ainst-begin ainst">begin</span> and <span class="ainst-dur ainst">dur</span> attributes: basic timing support</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-BeginValueSemantics" class="tocxref"> Begin value semantics</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-NegativeBegins" class="tocxref"> Handling negative offsets for begin</a>
          <li class="tocline5"><a href="smil-timing.html#q9" class="tocxref"> Negative begin delays</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-DurValueSemantics" class="tocxref"> Dur value semantics</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-ResolvingTimesExamples" class="tocxref"> Examples</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-EndAttribute" class="tocxref"> The <span class="ainst-end ainst">end</span> attribute: controlling active duration</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-NegativeEnds" class="tocxref"> Handling negative offsets for end</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-MinMax" class="tocxref"> The <span class="ainst-min ainst">min and max</span> attributes: more control over the active duration</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-minAndNegativeBegins" class="tocxref"> The <span class="ainst-min ainst">min</span> attribute and negative begin times</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-TimingAttributeGrammars" class="tocxref">  Timing attribute value grammars</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-BeginValueListSyntax" class="tocxref"> <span class="normative">Begin values</span></a>
          <li class="tocline5"><a href="smil-timing.html#Timing-EndValueListSyntax" class="tocxref"> <span class="normative">End values</span></a>
          <li class="tocline5"><a href="smil-timing.html#Timing-ParsingTimeSpecifiers" class="tocxref"> Parsing timing specifiers</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-ClockValueSyntax" class="tocxref"> Clock values</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-OffsetValueSyntax" class="tocxref"> Offset values</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-SMIL1BeginEndValueListSyntax" class="tocxref">  SMIL 1.0 begin and end values </a>
          <li class="tocline5"><a href="smil-timing.html#Timing-IDRefValueSyntax" class="tocxref"> ID-Reference values</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-SyncbaseValueSyntax" class="tocxref"> Syncbase values</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-EventValueSyntax" class="tocxref"> Event values</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-RepeatValueSyntax" class="tocxref"> Repeat values</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-AccessKeyValueSyntax" class="tocxref"> Accesskey values</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-MediaMarkerValueSyntax" class="tocxref"> Media marker values</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-WallclockSyncValueSyntax" class="tocxref"> Wallclock-sync values</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-endsyncAttribute" class="tocxref"> The <span class="ainst-endsync ainst">endsync</span> attribute</a>
        <li class="tocline4"><a href="smil-timing.html#Timing-repeatSyntax" class="tocxref"> The <span class="ainst-repeatCount ainst">repeatCount</span>, <span class="ainst-repeatDur ainst">repeatDur</span>, and <span class="ainst-repeat ainst">repeat</span> attributes: repeating elements</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-repeatExamples" class="tocxref"> Examples</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-MinAndRestart" class="tocxref"> The <span class="ainst-min ainst">min</span> attribute and restart:</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-repeatAttribute" class="tocxref"> SMIL 1.0 repeat (deprecated)</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-fillAttribute" class="tocxref"> The <span class="ainst-fill ainst">fill</span> attribute: extending an element</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-Time-containers-fillDefault" class="tocxref"> The <span class="ainst-fillDefault ainst">fillDefault</span> attribute</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-Event-sensitivity-fill" class="tocxref"> The Event sensitivity and <span class="ainst-fill ainst">fill</span></a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-restartAttribute" class="tocxref"> The <span class="ainst-restart ainst">restart</span> attribute</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-UsingRestartForToggle" class="tocxref"> Using restart for toggle activation</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-ResetDefaultAttribute" class="tocxref"> <span class="informative">Controlling the default behavior of restart</span></a>
          <li class="tocline5"><a href="smil-timing.html#Timing-ResettingElementState" class="tocxref"> Resetting element state</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-ControllingRuntimeSync" class="tocxref"> The <span class="ainst-syncBehavior ainst">syncBehavior</span>, <span class="ainst-syncTolerance ainst">syncTolerance</span>, and <span class="ainst-syncMaster ainst">syncMaster</span> attributes: controlling runtime synchronization</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-SyncBvrDefaults" class="tocxref"> <span class="informative">Controlling the default       behavior</span></a>
          <li class="tocline5"><a href="smil-timing.html#Timing-SyncAccumOffset" class="tocxref"> The accumulated       synchronization offset</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-IntegrationAttributes" class="tocxref"> Attributes for timing       integration: timeContainer and timeAction</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-timeContainerAttribute" class="tocxref">  The timeContainer       attribute</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-timeActionAttribute" class="tocxref"> The timeAction       attribute</a>
        <li class="tocline4"><a href="smil-timing.html#q49" class="tocxref"> Examples:</a>
      </ul>
      <li class="tocline3"><a href="smil-timing.html#Timing-TimeContainerSyntax" class="tocxref">10.4.2 Elements</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-timing.html#Timing-ParSyntax" class="tocxref"> The <span       class="einst-par einst">par</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-ImplicitDurPar" class="tocxref"> Implicit duration of <span       class="einst-par einst">par</span></a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-SeqSyntax" class="tocxref"> The <span       class="einst-seq einst">seq</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-ImplicitDurSeq" class="tocxref"> Implicit duration of <span       class="einst-seq einst">seq</span> containers</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-ExclSyntax" class="tocxref"> The <span       class="einst-excl einst">excl</span> element</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-ImplicitDurExcl" class="tocxref"> Implicit duration of <span       class="einst-excl einst">excl</span> containers</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-priorityClassElement" class="tocxref"> <span class="normative"></span>The <span       class="einst-priorityClass einst">priorityClass</span> element</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-priorityClassExamples" class="tocxref"> Examples using <span       class="einst-excl einst">excl</span> and <span       class="einst-priorityClass einst">priorityClass</span></a>
          <li class="tocline5"><a href="smil-timing.html#Timing-PauseQueueSemantics" class="tocxref"> Pause queue semantics</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-ImplicitDurOfMediaElementTimeContainers" class="tocxref">        Implicit duration of media element time containers</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#q68" class="tocxref"> Examples:</a>
          <li class="tocline5"><a href="smil-timing.html#q69" class="tocxref"> Media time containers of other types</a>
        </ul>
      </ul>
      <li class="tocline3"><a href="smil-timing.html#Timing-SemanticsOfTimingModel" class="tocxref">10.4.3 Semantics of the Timing       Model</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-timing.html#Timing-ResolvingTimes" class="tocxref"> Resolving times</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-DefiniteTimes" class="tocxref"> Definite times</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-DefiningSimpleDur" class="tocxref"> Defining the simple       duration</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-RepeatCountAndUnresolvedSimpleDur" class="tocxref"> <span       class="ainst-repeatCount ainst">repeatCount</span> and unresolved       simple duration</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-ComputingActiveDur" class="tocxref"> Computing the active       duration</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#q76" class="tocxref"> Active duration arithmetic rules</a>
          <li class="tocline5"><a href="smil-timing.html#q81" class="tocxref"> Active duration algorithm</a>
          <li class="tocline5"><a href="smil-timing.html#q82" class="tocxref"> Intermediate Active Duration Computation</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-PausedElementsAndActiveDur" class="tocxref"> Paused elements and       the active duration</a>
        <li class="tocline4"><a href="smil-timing.html#Timing-EvaluationOfBeginEndTimeLists" class="tocxref"> Evaluation of       begin and end time lists</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-BeginEnd-InstanceTimesLists" class="tocxref"> The instance times       lists</a>
          <li class="tocline5"><a href="smil-timing.html#q87" class="tocxref"> Principles for building and pruning intervals</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-BeginEnd-LifeCycle" class="tocxref"> Element life-cycle</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-BeginEnd-Restart" class="tocxref"> Interaction with restart       semantics</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-BeginEnd-Cycles" class="tocxref"> Cyclic dependencies in the       timegraph</a>
          <li class="tocline5"><a href="smil-timing.html#q96" class="tocxref"> Detecting Cycles</a>
          <li class="tocline5"><a href="smil-timing.html#q97" class="tocxref"> Examples</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-TimingAndRealWorldClockTime" class="tocxref">  Timing and       real-world clock times</a>
        <li class="tocline4"><a href="smil-timing.html#Timing-IntervalTiming" class="tocxref"> Interval timing</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-BackgroundRationale" class="tocxref"> Background rationale</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-ImplicationsForTimeModel" class="tocxref"> Implications for the       time model</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-EventSensitivity" class="tocxref">  Event sensitivity</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#q103" class="tocxref"> User event sensitivity and timing</a>
          <li class="tocline5"><a href="smil-timing.html#q104" class="tocxref"> Link Activation compared to Event activation</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-ConvertingLocalGlobalTimes" class="tocxref"> Converting between       local and global times</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#q106" class="tocxref"> Element active time calculation</a>
          <li class="tocline5"><a href="smil-timing.html#q107" class="tocxref"> Element simple time calculation</a>
          <li class="tocline5"><a href="smil-timing.html#q108" class="tocxref"> Converting wall-clock values</a>
          <li class="tocline5"><a href="smil-timing.html#q109" class="tocxref"> Converting from event time to element time</a>
          <li class="tocline5"><a href="smil-timing.html#q110" class="tocxref"> Converting from element time to element time</a>
          <li class="tocline5"><a href="smil-timing.html#q111" class="tocxref"> Time conversions and sampling the time graph</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-HyperlinksAndTiming" class="tocxref"> Hyperlinks and timing</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-HyperlinkImplicationsOnSeqExcl" class="tocxref"> Implications of       beginElement() and hyperlinking for <span       class="einst-seq einst">seq</span> and <span       class="einst-excl einst">excl</span> time containers</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-PropagatingTimes" class="tocxref"> Propagating changes to       times</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-PropagatingTimes-Deferred" class="tocxref"> Deferred elements       and propagating changes to begin</a>
          <li class="tocline5"><a href="smil-timing.html#q116" class="tocxref"> Restart and propagating changes to times</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-TimeContainerDuration" class="tocxref"> Time container       duration</a>
        <li class="tocline4"><a href="smil-timing.html#Timing-TimeContainersConstraintsOnChildDurs" class="tocxref"> Time       container constraints on child durations</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-minAndTimeContainersConstraints" class="tocxref">  The <span       class="ainst-min ainst">min</span> attribute and time container       constraints on child durations</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-TimeContainersConstraints" class="tocxref"> Time container       constraints on sync-arcs and events</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timing.html#Timing-SpecificsForSyncarcs" class="tocxref"> Specifics for       sync-arcs</a>
          <li class="tocline5"><a href="smil-timing.html#Timing-SpecificsForEvents" class="tocxref"> Specifics for event-based       timing</a>
        </ul>
        <li class="tocline4"><a href="smil-timing.html#Timing-BehaviorOf0DurElements" class="tocxref"> Behavior of 0 duration       elements</a>
      </ul>
      <li class="tocline3"><a href="smil-timing.html#Timing-ClarificationsSurprisingResults" class="tocxref">10.4.4 Clarifications       and surprising results</a>
    </ul>
    <li class="tocline2"><a href="smil-timing.html#Timing-IntegratingSMILTiming" class="tocxref">10.5 Integrating SMIL Timing       and Synchronization into a host language</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-timing.html#Timing-RequiredHostLangDefs" class="tocxref">10.5.1 Required host language       definitions</a>
      <li class="tocline3"><a href="smil-timing.html#Timing-RequiredDefsAndConstraints" class="tocxref">10.5.2 Required       definitions and constraints on element timing</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-timing.html#Timing-SupportedEvents" class="tocxref"> Supported events for       event-base timing</a>
      </ul>
      <li class="tocline3"><a href="smil-timing.html#Timing-ErrorHandlingSemantics" class="tocxref">10.5.3 Error handling       semantics</a>
    </ul>
    <li class="tocline2"><a href="smil-timing.html#Timing-DOMSupport" class="tocxref">10.6  Document object model support</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-timing.html#Timing-DOMAttributes" class="tocxref">10.6.1 Element and attribute       manipulation, mutation and constraints</a>
      <li class="tocline3"><a href="smil-timing.html#Timing-DOMEvents" class="tocxref">10.6.2 Events and event model</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-timing.html#q133" class="tocxref"> Example 1</a>
        <li class="tocline4"><a href="smil-timing.html#q134" class="tocxref"> Example 2</a>
        <li class="tocline4"><a href="smil-timing.html#q135" class="tocxref"> Example 3</a>
      </ul>
      <li class="tocline3"><a href="smil-timing.html#Timing-DOMMethods" class="tocxref">10.6.3 Reserved DOM methods</a>
    </ul>
    <li class="tocline2"><a href="smil-timing.html#Timing-Glossary" class="tocxref">10.7 Glossary</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-timing.html#Timing-GeneralConcepts" class="tocxref">10.7.1 <span class="informative">General concepts</span></a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-timing.html#Timing-SynchronizationRelationship" class="tocxref"> <span class="informative">Synchronization       relationship</span></a>
        <li class="tocline4"><a href="smil-timing.html#Timing-TimeGraph" class="tocxref"> <span class="informative">Time       graph</span></a>
        <li class="tocline4"><a href="smil-timing.html#Timing-DescriptiveTermsforTimes" class="tocxref"> <span class="informative">Descriptive terms for       times</span></a>
        <li class="tocline4"><a href="smil-timing.html#Timing-LocalTime" class="tocxref"> Local time and global time</a>
        <li class="tocline4"><a href="smil-timing.html#Timing-LinearMedia" class="tocxref"> Linear and Non-linear media</a>
        <li class="tocline4"><a href="smil-timing.html#Timing-ScheduledTiming" class="tocxref"> Scheduled timing</a>
        <li class="tocline4"><a href="smil-timing.html#q145" class="tocxref"> <span class="normative">        document begin</span></a>
        <li class="tocline4"><a href="smil-timing.html#q146" class="tocxref"> <span class="normative">document end</span></a>
        <li class="tocline4"><a href="smil-timing.html#q147" class="tocxref"> <span class="normative">document duration</span></a>
        <li class="tocline4"><a href="smil-timing.html#Timing-EventsInteractiveTiming" class="tocxref"> <span class="informative">Events and interactive       timing</span></a>
        <li class="tocline4"><a href="smil-timing.html#Timing-Syncbases" class="tocxref"> <span class="informative">Syncbases</span></a>
        <li class="tocline4"><a href="smil-timing.html#Timing-SyncArcs" class="tocxref"> <span class="informative">Sync       arcs</span></a>
        <li class="tocline4"><a href="smil-timing.html#Timing-Clocks" class="tocxref"> <span class="informative">Clocks</span></a>
        <li class="tocline4"><a href="smil-timing.html#q152" class="tocxref"> <span class="informative">UTC: Coordinated Universal       Time</span></a>
        <li class="tocline4"><a href="smil-timing.html#Timing-HyperlinkingTiming" class="tocxref"> <span class="informative">Hyperlinking and timing</span></a>
        <li class="tocline4"><a href="smil-timing.html#Timing-Activation" class="tocxref"> <span class="informative">Activation</span></a>
        <li class="tocline4"><a href="smil-timing.html#Timing-DiscreteContinuousMedia" class="tocxref"> <span class="informative">Discrete and continuous       Media</span></a>
      </ul>
      <li class="tocline3"><a href="smil-timing.html#Timing-TimingConcepts" class="tocxref">10.7.2 <span class="informative">Timing concepts</span></a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-timing.html#Timing-TimeContainers" class="tocxref"> <span class="informative">Time       containers</span></a>
        <li class="tocline4"><a href="smil-timing.html#Timing-ContentMediaElements" class="tocxref"> <span class="informative">Content/Media       elements</span></a>
        <li class="tocline4"><a href="smil-timing.html#Timing-BasicMarkup" class="tocxref"> <span class="informative">Basic       markup</span></a>
        <li class="tocline4"><a href="smil-timing.html#Timing-SimpleActiveDurs" class="tocxref"> <span class="informative">Simple and active       durations</span></a>
        <li class="tocline4"><a href="smil-timing.html#Timing-HardSoftSync" class="tocxref"> <span class="informative">Hard       and soft sync</span></a>
        <li class="tocline4"><a href="smil-timing.html#Timing-PruningAndCuttingOff" class="tocxref"> <span class="informative">Pruning and cutting off an       interval</span></a>
      </ul>
    </ul>
    <li class="tocline2"><a href="smil-timing.html#Timing-Appendix-Modules" class="tocxref">10.8 Appendix A: SMIL Timing and       Synchronization modules</a>
    <li class="tocline2"><a href="smil-timing.html#Timing-AppendixAnnotatedExamples" class="tocxref">10.9  Appendix B:       Annotated examples</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-timing.html#Timing-Ex:SimpleTimingWithinPar" class="tocxref">10.9.1 Example 1: Simple       timing within a Parallel time container</a>
      <li class="tocline3"><a href="smil-timing.html#Timing-Ex:SimpleTimingWithinSeq" class="tocxref">10.9.2 Example 2: Simple       timing within a Sequence time container</a>
      <li class="tocline3"><a href="smil-timing.html#Timing-Ex:ExclWithChildTimingVariants" class="tocxref">10.9.3 Example 3:       <span class="einst-excl einst">excl</span> time container with child       timing variants</a>
      <li class="tocline3"><a href="smil-timing.html#Timing-Ex:0DurDiscreteMedia" class="tocxref">10.9.4 Example 4: default       duration of discrete media</a>
      <li class="tocline3"><a href="smil-timing.html#Timing-Ex:EndSpeciesActiveDur" class="tocxref">10.9.5 Example 5: end       specifies end of active dur, <em>not</em> end of simple dur</a>
      <li class="tocline3"><a href="smil-timing.html#Timing-Ex:SMILDOMTiming" class="tocxref">10.9.6 Example 6: DOM-initiated       timing</a>
    </ul>
    <li class="tocline2"><a href="smil-timing.html#Timing-Appendix-DiffsFromSMIL1.0" class="tocxref">10.10 Appendix C:       Differences from SMIL 1.0</a>
    <li class="tocline2"><a href="smil-timing.html#Timing-Appendix-Unifying" class="tocxref">10.11 Appendix D: Unifying event       based and scheduled timing</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-timing.html#q173" class="tocxref">10.11.1 Background</a>
      <li class="tocline3"><a href="smil-timing.html#q174" class="tocxref">10.11.2 Modeling interactive, event-based content in SMIL</a>
    </ul>
  </ul>
  <li class="tocline1"><a href="smil-timemanip.html" class="tocxref">11. The SMIL 2.1 Time Manipulations Module</a>
  <ul class="toc">
    <li class="tocline2"><a href="smil-timemanip.html#q1" class="tocxref">11.1 Summary of Changes for SMIL 2.1</a>
    <li class="tocline2"><a href="smil-timemanip.html#TimeManip-Introduction" class="tocxref">11.2 Introduction</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-timemanip.html#TimeManip-Background" class="tocxref">11.2.1  Background</a>
      <li class="tocline3"><a href="smil-timemanip.html#TimeManip-Overview" class="tocxref">11.2.2  Overview of support</a>
      <li class="tocline3"><a href="smil-timemanip.html#TimeManip-AttributeSyntax" class="tocxref">11.2.3  Attribute syntax</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-timemanip.html#TimeManip-accelerateSyntax" class="tocxref"> The accelerate and decelerate attributes</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timemanip.html#q7" class="tocxref"> Examples</a>
        </ul>
        <li class="tocline4"><a href="smil-timemanip.html#TimeManip-autoReverseSyntax" class="tocxref"> The autoReverse attribute</a>
        <li class="tocline4"><a href="smil-timemanip.html#TimeManip-speedSyntax" class="tocxref"> The speed attribute</a>
        <li class="tocline4"><a href="smil-timemanip.html#q10" class="tocxref"> Examples</a>
      </ul>
      <li class="tocline3"><a href="smil-timemanip.html#TimeManip-Details" class="tocxref">11.2.4 Details of timing model arithmetic </a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-timemanip.html#q12" class="tocxref"> Timing and real-world clock times</a>
        <li class="tocline4"><a href="smil-timemanip.html#q13" class="tocxref"> Common definitions</a>
        <li class="tocline4"><a href="smil-timemanip.html#TimeManip-ComputingRunRate" class="tocxref">  Computing the element run-rate</a>
        <li class="tocline4"><a href="smil-timemanip.html#TimeManip-ConvertingTimes" class="tocxref">  Converting document time to element time</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timemanip.html#q16" class="tocxref"> Filtered active time calculation</a>
          <li class="tocline5"><a href="smil-timemanip.html#q17" class="tocxref"> Filtered simple time calculation</a>
        </ul>
        <li class="tocline4"><a href="smil-timemanip.html#TimeManip-ConvertingTimesRev" class="tocxref"> Converting element time to document time</a>
        <li class="tocline4"><a href="smil-timemanip.html#TimeManip-ComputingNetSpeed" class="tocxref"> Computing the net cascaded speed for an element</a>
      </ul>
      <li class="tocline3"><a href="smil-timemanip.html#TimeManip-MediaFallbacks" class="tocxref">11.2.5  Media fallback semantics</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-timemanip.html#q21" class="tocxref"> Ideal model</a>
        <li class="tocline4"><a href="smil-timemanip.html#Timing-FallbacksForMedia" class="tocxref"> Fallbacks for time filters on a media element</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timemanip.html#q23" class="tocxref"> Authoring considerations for the fallback semantics</a>
        </ul>
        <li class="tocline4"><a href="smil-timemanip.html#TimeManip-ImplicationsForTimeContainers" class="tocxref">  Implications of time manipulations on time containers</a>
        <ul class="toc">
          <li class="tocline5"><a href="smil-timemanip.html#q25" class="tocxref"> Handling negative speeds on time containers</a>
        </ul>
      </ul>
    </ul>
  </ul>
  <li class="tocline1"><a href="smil-transitions.html" class="tocxref">12. The SMIL 2.1 Transition Effects Module</a>
  <ul class="toc">
    <li class="tocline2"><a href="smil-transitions.html#TransitionEffects-SMIL21Changes" class="tocxref">12.1 Summary of Changes for SMIL 2.1</a>
    <li class="tocline2"><a href="smil-transitions.html#TransitionEffects-Introduction" class="tocxref">12.2 Introduction</a>
    <li class="tocline2"><a href="smil-transitions.html#TransitionEffects-Modeling" class="tocxref">12.3 Transition Model</a>
    <li class="tocline2"><a href="smil-transitions.html#TransitionEffects-Taxonomy" class="tocxref">12.4 Transition Taxonomy</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-transitions.html#q5" class="tocxref">12.4.1 Default Transition Subtypes</a>
      <li class="tocline3"><a href="smil-transitions.html#q6" class="tocxref">12.4.2 Required Transitions</a>
    </ul>
    <li class="tocline2"><a href="smil-transitions.html#TransitionEffects-Basic" class="tocxref">12.5 BasicTransitions Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-transitions.html#TransitionEffects-TransitionElement" class="tocxref">12.5.1 The <span class="edef">transition</span> element</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-transitions.html#TransitionEffects-TransitionElementExamples" class="tocxref"> Examples of the <span class="einst-transition einst">transition</span> element</a>
      </ul>
      <li class="tocline3"><a href="smil-transitions.html#q10" class="tocxref">12.5.2 The param element</a>
      <li class="tocline3"><a href="smil-transitions.html#TransitionEffects-TransitionAttribute" class="tocxref">12.5.3 The <span class="adef">transIn</span> and <span class="adef">transOut</span> attributes</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-transitions.html#q12" class="tocxref"> Rules For Applying Transitions to Media Elements</a>
        <li class="tocline4"><a href="smil-transitions.html#TransitionEffects-FillEqualsTransition" class="tocxref"> Use of fill="transition"</a>
        <li class="tocline4"><a href="smil-transitions.html#q14" class="tocxref"> Slideshow example with transitions</a>
        <li class="tocline4"><a href="smil-transitions.html#q15" class="tocxref"> Exclusive children and fill="transition"</a>
      </ul>
      <li class="tocline3"><a href="smil-transitions.html#q16" class="tocxref">12.5.4 Handling Parameter Errors</a>
      <li class="tocline3"><a href="smil-transitions.html#TransitionEffects-Parsing" class="tocxref">12.5.5 Transition Parsing Rules</a>
      <li class="tocline3"><a href="smil-transitions.html##TransitionEffects-AudioTransitions" class="tocxref">12.5.6 Audio Transitions</a>
      <li class="tocline3"><a href="smil-transitions.html#TransitionEffects-FullScreen" class="tocxref">12.5.7 FullScreen Transitions Module</a>
      <li class="tocline3"><a href="smil-transitions.html#TransitionEffects-Extending" class="tocxref">12.5.8 Extending The Set Of Transitions</a>
    </ul>
    <li class="tocline2"><a href="smil-transitions.html#TransitionEffects-Inline" class="tocxref">12.6 InlineTransitions Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-transitions.html#edef-transitionFilter" class="tocxref">12.6.1 The <span class="edef">transitionFilter </span> element</a>
      <li class="tocline3"><a href="smil-transitions.html#q23" class="tocxref">12.6.2 The param element</a>
    </ul>
    <li class="tocline2"><a href="smil-transitions.html#TransitionEffects-Modifiers" class="tocxref">12.7 TransitionModifiers Module</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-transitions.html#q25" class="tocxref">12.7.1 Horizontal and Vertical Pattern Repeat</a>
    </ul>
    <li class="tocline2"><a href="smil-transitions.html#TransitionEffects-Integration" class="tocxref">12.8 Integration</a>
    <li class="tocline2"><a href="smil-transitions.html#TransitionEffects-Appendix" class="tocxref">12.9 Appendix: Taxonomy Tables</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-transitions.html#Table 1: Taxonomy Table" class="tocxref">12.9.1 Table 1: The Taxonomy Table</a>
      <li class="tocline3"><a href="smil-transitions.html#Table 2: SMPTE Edge Wipes" class="tocxref">12.9.2 Table 2: SMPTE Edge Wipes</a>
      <li class="tocline3"><a href="smil-transitions.html#Table 3: SMPTE Iris Wipes" class="tocxref">12.9.3 Table 3: SMPTE Iris Wipes</a>
      <li class="tocline3"><a href="smil-transitions.html#Table 4: SMPTE Clock Wipes" class="tocxref">12.9.4 Table 4: SMPTE Clock Wipes</a>
      <li class="tocline3"><a href="smil-transitions.html#Table 5: SMPTE Matrix Wipes" class="tocxref">12.9.5 Table 5: SMPTE Matrix Wipes</a>
    </ul>
  </ul>
  <li class="tocline1"><a href="smil21-profile.html" class="tocxref">13. SMIL 2.1 Language Profile</a>
  <ul class="toc">
    <li class="tocline2"><a href="smil21-profile.html#SMILProfileNSAbstract" class="tocxref">13.1 Abstract</a>
    <li class="tocline2"><a href="smil21-profile.html#SMILProfileNS-first" class="tocxref">13.2 SMIL 2.1 Language Profile</a>
    <li class="tocline2"><a href="smil21-profile.html#q3" class="tocxref">13.3 Normative Definition of the SMIL 2.1 Language Profile</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil21-profile.html#SMILProfileNS-DocumentConformance" class="tocxref">13.3.1 Document Conformance</a>
      <li class="tocline3"><a href="smil21-profile.html#SMILProfileNS-LanguageConformance" class="tocxref">13.3.2 SMIL 2.1 Language Conformance</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil21-profile.html#SMILProfileNS-ConformingDocuments" class="tocxref"> Conforming SMIL 2.1 Documents</a>
        <li class="tocline4"><a href="smil21-profile.html#SMILProfileNS-AgentConformance" class="tocxref"> Conforming SMIL 2.1 Language User Agents</a>
      </ul>
      <li class="tocline3"><a href="smil21-profile.html#SMILProfileNS-SmilProfile" class="tocxref">13.3.3 The SMIL 2.1 Language Profile</a>
      <li class="tocline3"><a href="smil21-profile.html#SMILProfileNS-animation-module" class="tocxref">13.3.4 Animation Module</a>
      <li class="tocline3"><a href="smil21-profile.html#SMILProfileNS-content-module" class="tocxref">13.3.5 Content Control Modules</a>
      <li class="tocline3"><a href="smil21-profile.html#SMILProfileNS-layout-module" class="tocxref">13.3.6 Layout Modules</a>
      <li class="tocline3"><a href="smil21-profile.html#SMILProfileNS-extented-linking-module" class="tocxref">13.3.7 Linking Modules</a>
      <li class="tocline3"><a href="smil21-profile.html#SMILProfileNS-media-module" class="tocxref">13.3.8 Media Object Modules</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil21-profile.html#BaselineFormatsNS" class="tocxref"> Widely Supported MIME Types</a>
        <li class="tocline4"><a href="smil21-profile.html#MediaObjectIntegrationRequirementsNS" class="tocxref"> Media Object Integration Requirements</a>
      </ul>
      <li class="tocline3"><a href="smil21-profile.html#SMILProfileNS-meta-module" class="tocxref">13.3.9 Metainformation Module</a>
      <li class="tocline3"><a href="smil21-profile.html#SMILProfileNS-struct-module" class="tocxref">13.3.10 Structure Module</a>
      <li class="tocline3"><a href="smil21-profile.html#SMILProfileNS-timing-module" class="tocxref">13.3.11 Timing and Synchronization Modules</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil21-profile.html#SMILProfileNS-supported-events" class="tocxref"> Supported Event Symbols</a>
        <li class="tocline4"><a href="smil21-profile.html#q20" class="tocxref"> Event semantics</a>
        <li class="tocline4"><a href="smil21-profile.html#q21" class="tocxref"> Order of raising of simultaneous events:</a>
        <li class="tocline4"><a href="smil21-profile.html#q22" class="tocxref"> Extending the set of supported events</a>
        <li class="tocline4"><a href="smil21-profile.html#q23" class="tocxref"> <strong>Integration definitions</strong></a>
      </ul>
      <li class="tocline3"><a href="smil21-profile.html#SMILProfileNS-transition-module" class="tocxref">13.3.12 Transition Effects Modules</a>
    </ul>
    <li class="tocline2"><a href="smil21-profile.html#SMILProfileNS-Extending" class="tocxref">13.4 Extending the SMIL 2.1 Language</a>
    <li class="tocline2"><a href="smil21-profile.html#SMILProfileNS-DTD" class="tocxref">13.5 Appendix A: SMIL 2.1 Document Type Definition</a>
  </ul>
  <li class="tocline1"><a href="smil21-mobile-profile.html" class="tocxref">14. SMIL 2.1 Mobile Profile</a>
  <ul class="toc">
    <li class="tocline2"><a href="smil21-mobile-profile.html#smilMobileNS-abstract" class="tocxref">14.1 Abstract</a>
    <li class="tocline2"><a href="smil21-mobile-profile.html#q2" class="tocxref">14.2 SMIL 2.1 Mobile Profile</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil21-mobile-profile.html#q3" class="tocxref">14.2.1 Relationship with the 3GPP SMIL Language Profile</a>
      <li class="tocline3"><a href="smil21-mobile-profile.html#q4" class="tocxref">14.2.2 Relationship with the 3GPP2 SMIL Language Profile</a>
    </ul>
    <li class="tocline2"><a href="smil21-mobile-profile.html#q5" class="tocxref">14.3 Normative Definition of the Mobile Profile</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil21-mobile-profile.html#q6" class="tocxref">14.3.1 Document Conformance</a>
      <li class="tocline3"><a href="smil21-mobile-profile.html#q7" class="tocxref">14.3.2 Mobile Profile Conformance</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil21-mobile-profile.html#q8" class="tocxref"> Mobile Profile Namespace</a>
        <li class="tocline4"><a href="smil21-mobile-profile.html#q9" class="tocxref"> Conforming SMIL 2.1 Mobile Profile User Agents</a>
      </ul>
      <li class="tocline3"><a href="smil21-mobile-profile.html#q10" class="tocxref">14.3.3 The SMIL 2.1 Mobile Profile</a>
      <li class="tocline3"><a href="smil21-mobile-profile.html#q11" class="tocxref">14.3.4 Content Control Modules</a>
      <li class="tocline3"><a href="smil21-mobile-profile.html#q12" class="tocxref">14.3.5 Layout Modules</a>
      <li class="tocline3"><a href="smil21-mobile-profile.html#q13" class="tocxref">14.3.6 Linking Modules</a>
      <li class="tocline3"><a href="smil21-mobile-profile.html#q14" class="tocxref">14.3.7 Media Object Modules</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil21-mobile-profile.html#q15" class="tocxref"> Widely Supported Content Types</a>
        <li class="tocline4"><a href="smil21-mobile-profile.html#q16" class="tocxref"> Media Object Integration Requirements</a>
      </ul>
      <li class="tocline3"><a href="smil21-mobile-profile.html#q17" class="tocxref">14.3.8 Metainformation Module</a>
      <li class="tocline3"><a href="smil21-mobile-profile.html#q18" class="tocxref">14.3.9 Structure Module</a>
      <li class="tocline3"><a href="smil21-mobile-profile.html#q19" class="tocxref">14.3.10 Timing and Synchronization Modules</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil21-mobile-profile.html#q20" class="tocxref"> Supported Event Symbols</a>
        <li class="tocline4"><a href="smil21-mobile-profile.html#q21" class="tocxref"> Event semantics</a>
        <li class="tocline4"><a href="smil21-mobile-profile.html#q22" class="tocxref"> Order of raising of simultaneous events:</a>
        <li class="tocline4"><a href="smil21-mobile-profile.html#q23" class="tocxref"> Extending the set of supported events</a>
        <li class="tocline4"><a href="smil21-mobile-profile.html#q24" class="tocxref"> <strong>Integration definitions</strong></a>
      </ul>
      <li class="tocline3"><a href="smil21-mobile-profile.html#q25" class="tocxref">14.3.11 Transition Effects Modules</a>
    </ul>
    <li class="tocline2"><a href="smil21-mobile-profile.html#q26" class="tocxref">14.4 Appendix A: SMIL 2.1 Document Type Definition</a>
  </ul>
  <li class="tocline1"><a href="smil21-extended-mobile-profile.html" class="tocxref">15. SMIL 2.1 Extended Mobile Profile</a>
  <ul class="toc">
    <li class="tocline2"><a href="smil21-extended-mobile-profile.html#smilExtMobileNS-abstract" class="tocxref">15.1 Abstract</a>
    <li class="tocline2"><a href="smil21-extended-mobile-profile.html#q2" class="tocxref">15.2 SMIL 2.1 Extended Mobile Profile</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil21-extended-mobile-profile.html#q3" class="tocxref">15.2.1 Relationship with the 3GPP2 SMIL Language Profile</a>
    </ul>
    <li class="tocline2"><a href="smil21-extended-mobile-profile.html#q4" class="tocxref">15.3 Normative Definition of the Extended Mobile Profile</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil21-extended-mobile-profile.html#q5" class="tocxref">15.3.1 Document Conformance</a>
      <li class="tocline3"><a href="smil21-extended-mobile-profile.html#q6" class="tocxref">15.3.2 Extended Mobile Profile Conformance</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil21-extended-mobile-profile.html#q7" class="tocxref"> Extended Mobile Profile Namespace</a>
        <li class="tocline4"><a href="smil21-extended-mobile-profile.html#q8" class="tocxref"> Conforming SMIL 2.1 Extended Mobile Profile User Agents</a>
      </ul>
      <li class="tocline3"><a href="smil21-extended-mobile-profile.html#q9" class="tocxref">15.3.3 The SMIL 2.1 Extended Mobile Profile</a>
      <li class="tocline3"><a href="smil21-extended-mobile-profile.html#q10" class="tocxref">15.3.4 Animation Module</a>
      <li class="tocline3"><a href="smil21-extended-mobile-profile.html#q11" class="tocxref">15.3.5 Content Control Modules</a>
      <li class="tocline3"><a href="smil21-extended-mobile-profile.html#q12" class="tocxref">15.3.6 Layout Modules</a>
      <li class="tocline3"><a href="smil21-extended-mobile-profile.html#q13" class="tocxref">15.3.7 Linking Modules</a>
      <li class="tocline3"><a href="smil21-extended-mobile-profile.html#q14" class="tocxref">15.3.8 Media Object Modules</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil21-extended-mobile-profile.html#q15" class="tocxref"> Widely Supported Content Types</a>
        <li class="tocline4"><a href="smil21-extended-mobile-profile.html#q16" class="tocxref"> Media Object Integration Requirements</a>
      </ul>
      <li class="tocline3"><a href="smil21-extended-mobile-profile.html#q17" class="tocxref">15.3.9 Metainformation Module</a>
      <li class="tocline3"><a href="smil21-extended-mobile-profile.html#q18" class="tocxref">15.3.10 Structure Module</a>
      <li class="tocline3"><a href="smil21-extended-mobile-profile.html#q19" class="tocxref">15.3.11 Timing and Synchronization Modules</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil21-extended-mobile-profile.html#q20" class="tocxref"> Supported Event Symbols</a>
        <li class="tocline4"><a href="smil21-extended-mobile-profile.html#q21" class="tocxref"> Event semantics</a>
        <li class="tocline4"><a href="smil21-extended-mobile-profile.html#q22" class="tocxref"> Order of raising of simultaneous events:</a>
        <li class="tocline4"><a href="smil21-extended-mobile-profile.html#q23" class="tocxref"> Extending the set of supported events</a>
        <li class="tocline4"><a href="smil21-extended-mobile-profile.html#q24" class="tocxref"> <strong>Integration definitions</strong></a>
      </ul>
      <li class="tocline3"><a href="smil21-extended-mobile-profile.html#q25" class="tocxref">15.3.12 Transition Effects Modules</a>
    </ul>
    <li class="tocline2"><a href="smil21-extended-mobile-profile.html#q26" class="tocxref">15.4 Appendix A: SMIL 2.1 Document Type Definition</a>
  </ul>
  <li class="tocline1"><a href="smil-basic.html" class="tocxref">16. SMIL 2.1 Basic Profile and Scalability Framework</a>
  <ul class="toc">
    <li class="tocline2"><a href="smil-basic.html#smilBasicNS-Abstract" class="tocxref">16.1 Abstract</a>
    <li class="tocline2"><a href="smil-basic.html#smilBasicNS-Intro" class="tocxref">16.2 Introduction</a>
    <li class="tocline2"><a href="smil-basic.html#smilBasicNS-Basic" class="tocxref">16.3 SMIL 2.1 Basic Profile</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-basic.html#smilBasicNS-BasicDef" class="tocxref">16.3.1 Definition</a>
      <ul class="toc">
        <li class="tocline4"><a href="smil-basic.html#BaseGuideNS-BasicDefXML" class="tocxref"> XML Namespace Declarations and Internationalization</a>
      </ul>
      <li class="tocline3"><a href="smil-basic.html#BaseGuideNS-BasicDoc" class="tocxref">16.3.2 Conformance of SMIL 2.1 Basic Documents</a>
      <li class="tocline3"><a href="smil-basic.html#BaseGuideNS-BasicUserAgent" class="tocxref">16.3.3 Conformance of SMIL 2.1 Basic User Agents</a>
    </ul>
    <li class="tocline2"><a href="smil-basic.html#smilBasicNS-Guide" class="tocxref">16.4 Scalable Profiles</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-basic.html#smilBasicNS-GuideDef" class="tocxref">16.4.1 Definition</a>
      <li class="tocline3"><a href="smil-basic.html#smilBasicNS-GuideDoc" class="tocxref">16.4.2 SMIL 2.1 Document Scalability Guidelines</a>
      <li class="tocline3"><a href="smil-basic.html#smilBasicNS-conformance" class="tocxref">16.4.3 Conformance of Scalable SMIL 2.1 Documents</a>
      <li class="tocline3"><a href="smil-basic.html#smilBasicNS-GuidePlayer" class="tocxref">16.4.4 Conformance of Scalable User Agents</a>
    </ul>
  </ul>
  <li class="tocline1"><a href="smil-DTD.html" class="tocxref">Appendix A. Appendix A. SMIL 2.1 DTDs</a>
  <ul class="toc">
    <li class="tocline2"><a href="smil-DTD.html#q1" class="tocxref">A.1 A.1 SMIL 2.1 Module DTDs:</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-DTD.html#SMIL-anim" class="tocxref">A.1.1 A.1.1 The SMIL Animation Module</a>
      <li class="tocline3"><a href="smil-DTD.html#SMIL-control" class="tocxref">A.1.2 A.1.2 The SMIL Content Control Module</a>
      <li class="tocline3"><a href="smil-DTD.html#SMIL-layout" class="tocxref">A.1.3 A.1.3 The SMIL Layout Module</a>
      <li class="tocline3"><a href="smil-DTD.html#SMIL-link" class="tocxref">A.1.4 A.1.4 The SMIL Linking Module</a>
      <li class="tocline3"><a href="smil-DTD.html#SMIL-media" class="tocxref">A.1.5 A.1.5 The SMIL Media Object Module</a>
      <li class="tocline3"><a href="smil-DTD.html#SMIL-metainformation" class="tocxref">A.1.6 A.1.6 The SMIL Metainformation Module</a>
      <li class="tocline3"><a href="smil-DTD.html#SMIL-struct" class="tocxref">A.1.7 A.1.7 The SMIL Structure Module</a>
      <li class="tocline3"><a href="smil-DTD.html#SMIL-timing" class="tocxref">A.1.8 A.1.8 The SMIL Timing Module</a>
      <li class="tocline3"><a href="smil-DTD.html#SMIL-transition" class="tocxref">A.1.9 A.1.9 The SMIL Transition Module</a>
    </ul>
    <li class="tocline2"><a href="smil-DTD.html#q11" class="tocxref">A.2 A.2 SMIL 2.1 Profiles:</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-DTD.html#smil-language-profile-model-1.mod" class="tocxref">A.2.1 A.2.1 SMIL 2.1 Language Profile model</a>
      <li class="tocline3"><a href="smil-DTD.html#smil-mobile-profile-model-1.mod" class="tocxref">A.2.2 A.2.2 SMIL 2.1 Mobile Profile model</a>
      <li class="tocline3"><a href="smil-DTD.html#smil-extended-mobile-profile-model-1.mod" class="tocxref">A.2.3 A.2.3 SMIL 2.1 Extended Mobile Profile model</a>
      <li class="tocline3"><a href="smil-DTD.html#SMIL21.dtd" class="tocxref">A.2.4 A.2.4 SMIL 2.1 Language Profile DTD driver</a>
      <li class="tocline3"><a href="smil-DTD.html#SMIL21Mobile.dtd" class="tocxref">A.2.5 A.2.5 SMIL 2.1 Mobile Profile DTD driver</a>
      <li class="tocline3"><a href="smil-DTD.html#SMIL21ExtendedMobile.dtd" class="tocxref">A.2.6 A.2.6 SMIL 2.1 Extended Mobile Profile DTD driver</a>
    </ul>
    <li class="tocline2"><a href="smil-DTD.html#q18" class="tocxref">A.3 A.3 General modularization framework:</a>
    <ul class="toc">
      <li class="tocline3"><a href="smil-DTD.html#smil-datatypes-1" class="tocxref">A.3.1 A.3.1 SMIL 2.1 common datatypes</a>
      <li class="tocline3"><a href="smil-DTD.html#smil-attribs-1" class="tocxref">A.3.2 A.3.2 SMIL 2.1 common attributes</a>
      <li class="tocline3"><a href="smil-DTD.html#smil-qname-1" class="tocxref">A.3.3 A.3.3 SMIL 2.1 qualified names module</a>
      <li class="tocline3"><a href="smil-DTD.html#smil-framework-1" class="tocxref">A.3.4 A.3.4 SMIL 2.1 framework module</a>
    </ul>
  </ul>
  <li class="tocline1"><a href="modules.html" class="tocxref">Appendix B. Index of SMIL 2.1 Modules</a>
  <li class="tocline1"><a href="elements.html" class="tocxref">Appendix C. Index of SMIL 2.1 Elements</a>
  <li class="tocline1"><a href="attributes.html" class="tocxref">Appendix D. Index of SMIL 2.1 Attributes</a>
  <li class="tocline1"><a href="refs.html" class="tocxref">Appendix E. SMIL 2.1 References</a>
  <ul class="toc">
    <li class="tocline2"><a href="refs.html#refsNSnormative" class="tocxref">E.1 Normative References</a>
    <li class="tocline2"><a href="refs.html#q2" class="tocxref">E.2 Informative References</a>
  </ul>
</ul>
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