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<header><span id="styleSwitch"></span>
   <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>

    <h1 id="big-title">HTML5</h1>
    <p class="no-num no-toc subline">A vocabulary and associated APIs for HTML and XHTML</p>
   <h2 class="no-num no-toc" id="w3c-recommendation-28-october-2014">W3C Recommendation 28 October 2014</h2>
   </header><dl><dt>This Version:</dt>
    <dd><a href="http://www.w3.org/TR/2014/REC-html5-20141028/">http://www.w3.org/TR/2014/REC-html5-20141028/</a></dd>
    <dt>Latest Published Version:</dt>
    <dd><a href="http://www.w3.org/TR/html5/">http://www.w3.org/TR/html5/</a></dd>
    <dt>Latest Version of HTML:</dt>
    <dd><a href="http://www.w3.org/TR/html/">http://www.w3.org/TR/html/</a></dd>
    <dt>Latest Editor's Draft of HTML:</dt>
    <dd><a class="latest-link" href="http://www.w3.org/html/wg/drafts/html/master/">http://www.w3.org/html/wg/drafts/html/master/</a></dd>

      <dt>Previous Version:</dt>
      <dd><a href="http://www.w3.org/TR/2014/PR-html5-20140916/">http://www.w3.org/TR/2014/PR-html5-20140916/</a></dd>
      <dt>Previous Recommendation:</dt>
      <dd><a href="http://www.w3.org/TR/1999/REC-html401-19991224/">http://www.w3.org/TR/1999/REC-html401-19991224/</a></dd>
      <dt id="specification-editors">Editors:</dt>
      <dd>WHATWG:</dd>
      <dd><a href="mailto:ian@hixie.ch">Ian Hickson</a>, Google, Inc.</dd>
      <dd>W3C:</dd>
      <dd><a href="http://berjon.com/">Robin Berjon</a>, W3C</dd>
      <dd><a href="mailto:sfaulkner@paciellogroup.com">Steve Faulkner</a>, The Paciello Group</dd>
      <dd><a href="mailto:travil@microsoft.com">Travis Leithead</a>, Microsoft Corporation</dd>
      <dd><a href="mailto:Erika.Doyle@microsoft.com">Erika Doyle Navara</a>, Microsoft Corporation</dd>
      <dd><a href="mailto:eoconnor@apple.com">Edward O'Connor</a>, Apple Inc.</dd>
      <dd><a href="mailto:silviapfeiffer1@gmail.com">Silvia Pfeiffer</a></dd>
   </dl><p>
     Please check the <a href="https://www.w3.org/html/wg/html5-errata"><strong>errata</strong></a>
     for any errors or issues reported since publication.
   </p> 
   <p>
     This specification is also available as a  <a href="single-page.html">single page HTML</a>
     document. See also
     <a href="http://www.w3.org/2003/03/Translations/byTechnology?technology=html5"><strong>translations</strong></a>.
   </p>

   <p class="copyright"><a href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a>
   © 2014 <a href="http://www.w3.org/"><abbr title="World Wide
   Web Consortium">W3C</abbr></a><sup>®</sup> (<a href="http://www.csail.mit.edu/"><abbr title="Massachusetts
   Institute of Technology">MIT</abbr></a>, <a href="http://www.ercim.eu/"><abbr title="European Research
   Consortium for Informatics and Mathematics">ERCIM</abbr></a>, <a href="http://www.keio.ac.jp/">Keio</a>, <a href="http://ev.buaa.edu.cn/">Beihang</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>

</div>
  

  <hr class="top"><h2 class="no-num no-toc" id="abstract">Abstract</h2>

  <p>
    This specification defines the 5th major revision of the core language of the World Wide Web:
    the Hypertext Markup Language (HTML). In this version, new features are introduced to help Web 
    application authors, new elements are introduced based on research into prevailing authoring 
    practices, and special attention has been given to defining clear conformance criteria for user 
    agents in an effort to improve interoperability.
  </p>

  <h2 class="no-num no-toc" id="status-of-this-document">Status of This document</h2>
  <p>
    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 W3C technical reports index at
    <a href="http://www.w3.org/TR/">http://www.w3.org/TR/</a>.
  </p>
  <p>
    The W3C <a href="http://www.w3.org/html/wg/">HTML Working Group</a> is the W3C working group
    responsible for this specification's progress. This specification is the 28 October
    2014 Recommendation.
  </p>
  <p>
    If you wish to make comments regarding this document in a manner that
    is tracked by the W3C, please submit them via our <a href="http://www.w3.org/Bugs/Public/enter_bug.cgi?product=HTML%20WG">our public bug
    database</a> (<a href="https://www.w3.org/Bugs/Public/buglist.cgi?bug_status=NEW&amp;bug_status=ASSIGNED&amp;bug_status=REOPENED&amp;component=HTML5%20spec&amp;keywords=CR%2C%20&amp;keywords_type=allwords&amp;known_name=CR&amp;list_id=43956&amp;product=HTML%20WG&amp;query_based_on=CR&amp;query_format=advanced">open bugs</a>).
    If you cannot do this then you can also e-mail feedback to
    <a href="mailto:public-html@w3.org">public-html@w3.org</a>
    (<a href="mailto:public-html-request@w3.org?Subject=subscribe">subscribe</a>,
    <a href="http://lists.w3.org/Archives/Public/public-html/">archives</a>), and arrangements will
    be made to transpose the comments to our public bug database. All
    feedback is welcome.
  </p>
  <p>
    A comprehensive test suite for this specification is maintained and kept up to date as part of
    the <a href="https://github.com/w3c/web-platform-tests">WebPlatform Tests</a> project.
    Please see the Working Group's <a href="http://w3c.github.io/test-results/html/details.html">implementation
    report</a>.
  </p>
  <p>
    Work on evolutions of this specification proceeds at
    <a href="http://www.w3.org/TR/html/">http://www.w3.org/TR/html/</a>. The HTML5 Recommendation
    represents a milestone in the development of HTML but far from being the end of the road and
    improvements are already well under way. It is possible that future versions will no longer be
    published as a monolithic specification but rather as a set of smaller modules. Irrespective of
    whether that is the case or not, <a href="http://www.w3.org/TR/html/">http://www.w3.org/TR/html/</a>
    will be maintained as the entry point to the entirety of HTML technology.
  </p>
  <p>
    Work on extending this specification typically proceeds through
    <a href="http://www.w3.org/html/wg/wiki/ExtensionSpecifications">extension specifications</a>
    which should be consulted to see what new features are being reviewed.
  </p>
  <p>
    The bulk of the text of this specification is also available in the WHATWG 
    <a href="http://www.whatwg.org/specs/web-apps/current-work/complete.html">HTML Living 
    Standard</a>, under a license that permits reuse of the specification text.
  </p>
  <p>
    This document has been reviewed by W3C Members, by software developers, and by other W3C groups
    and interested parties, and is endorsed by the Director as a W3C Recommendation. It is a stable
    document and may be used as reference material or cited 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>
    Work on this specification is also done at the <a href="http://www.whatwg.org/">WHATWG</a>. The
    W3C HTML working group actively pursues convergence of the HTML specification with the WHATWG
    living standard, within the bounds of the <a href="http://www.w3.org/2013/09/html-charter.html">W3C
    HTML working group charter</a>. There are various ways to follow this work at the WHATWG:
  </p>
  <ul><li>Commit-Watchers mailing list (complete source diffs): <a href="http://lists.whatwg.org/listinfo.cgi/commit-watchers-whatwg.org">http://lists.whatwg.org/listinfo.cgi/commit-watchers-whatwg.org</a></li>
    <li>Annotated summary with unified diffs: <a href="http://html5.org/tools/web-apps-tracker">http://html5.org/tools/web-apps-tracker</a></li>
    <li>Raw Subversion interface: <code>svn checkout http://svn.whatwg.org/webapps/</code></li>
  </ul><p>
    The following editorial changes were made since Proposed Recommendation:
  </p>
  <ul><li>The manner in which updates to this specification will be published was clarified.</li>
    <li>The IANA registration for <code><a href="iana.html#application/xhtml+xml">application/xhtml+xml</a></code> was accepted during PR, leading to a small update to the corresponding section.</li>
    <li>"Decoder error" was mistakenly listed as a URL-related definition when
    it is in fact Encoding-related</li>
    <li>"Parsed URL" has been given a proper mapping to the URL specification</li>
    <li>Improved the informative summary for several elements. (Mostly pointers to tag omission and ARIA rules.)</li>
    <li>Updated
 a few references to documents that have seen new revisions (RFC4281, 
RFC2313, RFC3490, MPEG-DASH) and provided a more stable link to BECSS.</li>
    <li>Added a note about and made some modifications to the URL reference.</li>
    <li>A number of small styling tweaks were made and typos were fixed.</li>
  </ul><!-- required patent boilerplate --><p>This document was produced by a group operating under the <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5
  February 2004 W3C Patent Policy</a>. W3C maintains a <a href="http://www.w3.org/2004/01/pp-impl/40318/status" rel="disclosure">public list of
  any patent disclosures</a> made in connection with the deliverables
  of the group; that page also includes instructions for disclosing a
  patent. An individual who has actual knowledge of a patent which the
  individual believes contains <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/#def-essential">Essential
  Claim(s)</a> must 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>
    This document is governed by the <a href="http://www.w3.org/2005/10/Process-20051014/" id="w3c_process_revision">14 October 2005 W3C Process Document</a>.
  </p>
  

  <h2 class="no-num no-toc" id="contents">Table of Contents</h2>

<!--begin-toc-->
<ul class="toc"><li><a href="introduction.html#introduction"><span class="secno">1 </span>Introduction</a>
  <ul class="toc"><li><a href="introduction.html#background"><span class="secno">1.1 </span>Background</a></li>
   <li><a href="introduction.html#audience"><span class="secno">1.2 </span>Audience</a></li>
   <li><a href="introduction.html#scope"><span class="secno">1.3 </span>Scope</a></li>
   <li><a href="introduction.html#history-0"><span class="secno">1.4 </span>History</a></li>
   <li><a href="introduction.html#design-notes"><span class="secno">1.5 </span>Design notes</a>
    <ul class="toc"><li><a href="introduction.html#serializability-of-script-execution"><span class="secno">1.5.1 </span>Serializability of script execution</a></li>
     <li><a href="introduction.html#compliance-with-other-specifications"><span class="secno">1.5.2 </span>Compliance with other specifications</a></li>
     <li><a href="introduction.html#extensibility"><span class="secno">1.5.3 </span>Extensibility</a></ul></li>
   <li><a href="introduction.html#html-vs-xhtml"><span class="secno">1.6 </span>HTML vs XHTML</a></li>
   <li><a href="introduction.html#structure-of-this-specification"><span class="secno">1.7 </span>Structure of this specification</a>
    <ul class="toc"><li><a href="introduction.html#how-to-read-this-specification"><span class="secno">1.7.1 </span>How to read this specification</a></li>
     <li><a href="introduction.html#typographic-conventions"><span class="secno">1.7.2 </span>Typographic conventions</a></ul></li>
   <li><a href="introduction.html#fingerprint"><span class="secno">1.8 </span>Privacy concerns</a></li>
   <li><a href="introduction.html#a-quick-introduction-to-html"><span class="secno">1.9 </span>A quick introduction to HTML</a>
    <ul class="toc"><li><a href="introduction.html#writing-secure-applications-with-html"><span class="secno">1.9.1 </span>Writing secure applications with HTML</a></li>
     <li><a href="introduction.html#common-pitfalls-to-avoid-when-using-the-scripting-apis"><span class="secno">1.9.2 </span>Common pitfalls to avoid when using the scripting APIs</a></li>
     <li><a href="introduction.html#how-to-catch-mistakes-when-writing-html:-validators-and-conformance-checkers"><span class="secno">1.9.3 </span>How to catch mistakes when writing HTML: validators and conformance checkers</a></ul></li>
   <li><a href="introduction.html#conformance-requirements-for-authors"><span class="secno">1.10 </span>Conformance requirements for authors</a>
    <ul class="toc"><li><a href="introduction.html#presentational-markup"><span class="secno">1.10.1 </span>Presentational markup</a></li>
     <li><a href="introduction.html#syntax-errors"><span class="secno">1.10.2 </span>Syntax errors</a></li>
     <li><a href="introduction.html#restrictions-on-content-models-and-on-attribute-values"><span class="secno">1.10.3 </span>Restrictions on content models and on attribute values</a></ul></li>
   <li><a href="introduction.html#suggested-reading"><span class="secno">1.11 </span>Suggested reading</a></ul></li>
 <li><a href="infrastructure.html#infrastructure"><span class="secno">2 </span>Common infrastructure</a>
  <ul class="toc"><li><a href="infrastructure.html#terminology"><span class="secno">2.1 </span>Terminology</a>
    <ul class="toc"><li><a href="infrastructure.html#resources"><span class="secno">2.1.1 </span>Resources</a></li>
     <li><a href="infrastructure.html#xml"><span class="secno">2.1.2 </span>XML</a></li>
     <li><a href="infrastructure.html#dom-trees"><span class="secno">2.1.3 </span>DOM trees</a></li>
     <li><a href="infrastructure.html#scripting-0"><span class="secno">2.1.4 </span>Scripting</a></li>
     <li><a href="infrastructure.html#plugins"><span class="secno">2.1.5 </span>Plugins</a></li>
     <li><a href="infrastructure.html#encoding-terminology"><span class="secno">2.1.6 </span>Character encodings</a></ul></li>
   <li><a href="infrastructure.html#conformance-requirements"><span class="secno">2.2 </span>Conformance requirements</a>
    <ul class="toc"><li><a href="infrastructure.html#conformance-classes"><span class="secno">2.2.1 </span>Conformance classes</a></li>
     <li><a href="infrastructure.html#dependencies"><span class="secno">2.2.2 </span>Dependencies</a></li>
     <li><a href="infrastructure.html#extensibility-0"><span class="secno">2.2.3 </span>Extensibility</a></li>
     <li><a href="infrastructure.html#interactions-with-xpath-and-xslt"><span class="secno">2.2.4 </span>Interactions with XPath and XSLT</a></ul></li>
   <li><a href="infrastructure.html#case-sensitivity-and-string-comparison"><span class="secno">2.3 </span>Case-sensitivity and string comparison</a></li>
   <li><a href="infrastructure.html#common-microsyntaxes"><span class="secno">2.4 </span>Common microsyntaxes</a>
    <ul class="toc"><li><a href="infrastructure.html#common-parser-idioms"><span class="secno">2.4.1 </span>Common parser idioms</a></li>
     <li><a href="infrastructure.html#boolean-attributes"><span class="secno">2.4.2 </span>Boolean attributes</a></li>
     <li><a href="infrastructure.html#keywords-and-enumerated-attributes"><span class="secno">2.4.3 </span>Keywords and enumerated attributes</a></li>
     <li><a href="infrastructure.html#numbers"><span class="secno">2.4.4 </span>Numbers</a>
      <ul class="toc"><li><a href="infrastructure.html#signed-integers"><span class="secno">2.4.4.1 </span>Signed integers</a></li>
       <li><a href="infrastructure.html#non-negative-integers"><span class="secno">2.4.4.2 </span>Non-negative integers</a></li>
       <li><a href="infrastructure.html#floating-point-numbers"><span class="secno">2.4.4.3 </span>Floating-point numbers</a></li>
       <li><a href="infrastructure.html#percentages-and-dimensions"><span class="secno">2.4.4.4 </span>Percentages and lengths</a></li>
       <li><a href="infrastructure.html#lists-of-integers"><span class="secno">2.4.4.5 </span>Lists of integers</a></li>
       <li><a href="infrastructure.html#lists-of-dimensions"><span class="secno">2.4.4.6 </span>Lists of dimensions</a></ul></li>
     <li><a href="infrastructure.html#dates-and-times"><span class="secno">2.4.5 </span>Dates and times</a>
      <ul class="toc"><li><a href="infrastructure.html#months"><span class="secno">2.4.5.1 </span>Months</a></li>
       <li><a href="infrastructure.html#dates"><span class="secno">2.4.5.2 </span>Dates</a></li>
       <li><a href="infrastructure.html#yearless-dates"><span class="secno">2.4.5.3 </span>Yearless dates</a></li>
       <li><a href="infrastructure.html#times"><span class="secno">2.4.5.4 </span>Times</a></li>
       <li><a href="infrastructure.html#floating-dates-and-times"><span class="secno">2.4.5.5 </span>Floating dates and times</a></li>
       <li><a href="infrastructure.html#time-zones"><span class="secno">2.4.5.6 </span>Time zones</a></li>
       <li><a href="infrastructure.html#global-dates-and-times"><span class="secno">2.4.5.7 </span>Global dates and times</a></li>
       <li><a href="infrastructure.html#weeks"><span class="secno">2.4.5.8 </span>Weeks</a></li>
       <li><a href="infrastructure.html#durations"><span class="secno">2.4.5.9 </span>Durations</a></li>
       <li><a href="infrastructure.html#vaguer-moments-in-time"><span class="secno">2.4.5.10 </span>Vaguer moments in time</a></ul></li>
     <li><a href="infrastructure.html#colors"><span class="secno">2.4.6 </span>Colors</a></li>
     <li><a href="infrastructure.html#space-separated-tokens"><span class="secno">2.4.7 </span>Space-separated tokens</a></li>
     <li><a href="infrastructure.html#comma-separated-tokens"><span class="secno">2.4.8 </span>Comma-separated tokens</a></li>
     <li><a href="infrastructure.html#syntax-references"><span class="secno">2.4.9 </span>References</a></li>
     <li><a href="infrastructure.html#mq"><span class="secno">2.4.10 </span>Media queries</a></ul></li>
   <li><a href="infrastructure.html#urls"><span class="secno">2.5 </span>URLs</a>
    <ul class="toc"><li><a href="infrastructure.html#terminology-0"><span class="secno">2.5.1 </span>Terminology</a></li>
     <li><a href="infrastructure.html#resolving-urls"><span class="secno">2.5.2 </span>Resolving URLs</a></li>
     <li><a href="infrastructure.html#dynamic-changes-to-base-urls"><span class="secno">2.5.3 </span>Dynamic changes to base URLs</a></ul></li>
   <li><a href="infrastructure.html#fetching-resources"><span class="secno">2.6 </span>Fetching resources</a>
    <ul class="toc"><li><a href="infrastructure.html#terminology-1"><span class="secno">2.6.1 </span>Terminology</a></li>
     <li><a href="infrastructure.html#processing-model"><span class="secno">2.6.2 </span>Processing model</a></li>
     <li><a href="infrastructure.html#encrypted-http-and-related-security-concerns"><span class="secno">2.6.3 </span>Encrypted HTTP and related security concerns</a></li>
     <li><a href="infrastructure.html#content-type-sniffing"><span class="secno">2.6.4 </span>Determining the type of a resource</a></li>
     <li><a href="infrastructure.html#extracting-character-encodings-from-meta-elements"><span class="secno">2.6.5 </span>Extracting character encodings from <code>meta</code> elements</a></li>
     <li><a href="infrastructure.html#cors-settings-attributes"><span class="secno">2.6.6 </span>CORS settings attributes</a></li>
     <li><a href="infrastructure.html#cors-enabled-fetch"><span class="secno">2.6.7 </span>CORS-enabled fetch</a></ul></li>
   <li><a href="infrastructure.html#common-dom-interfaces"><span class="secno">2.7 </span>Common DOM interfaces</a>
    <ul class="toc"><li><a href="infrastructure.html#reflecting-content-attributes-in-idl-attributes"><span class="secno">2.7.1 </span>Reflecting content attributes in IDL attributes</a></li>
     <li><a href="infrastructure.html#collections"><span class="secno">2.7.2 </span>Collections</a>
      <ul class="toc"><li><a href="infrastructure.html#htmlallcollection"><span class="secno">2.7.2.1 </span>HTMLAllCollection</a></li>
       <li><a href="infrastructure.html#htmlformcontrolscollection"><span class="secno">2.7.2.2 </span>HTMLFormControlsCollection</a></li>
       <li><a href="infrastructure.html#htmloptionscollection"><span class="secno">2.7.2.3 </span>HTMLOptionsCollection</a></ul></li>
     <li><a href="infrastructure.html#domstringmap"><span class="secno">2.7.3 </span>DOMStringMap</a></li>
     <li><a href="infrastructure.html#transferable-objects"><span class="secno">2.7.4 </span>Transferable objects</a></li>
     <li><a href="infrastructure.html#safe-passing-of-structured-data"><span class="secno">2.7.5 </span>Safe passing of structured data</a></li>
     <li><a href="infrastructure.html#callbacks"><span class="secno">2.7.6 </span>Callbacks</a></li>
     <li><a href="infrastructure.html#garbage-collection"><span class="secno">2.7.7 </span>Garbage collection</a></ul></li>
   <li><a href="infrastructure.html#namespaces"><span class="secno">2.8 </span>Namespaces</a></ul></li>
 <li><a href="dom.html#dom"><span class="secno">3 </span>Semantics, structure, and APIs of HTML documents</a>
  <ul class="toc"><li><a href="dom.html#documents"><span class="secno">3.1 </span>Documents</a>
    <ul class="toc"><li><a href="dom.html#the-document-object"><span class="secno">3.1.1 </span>The <code>Document</code> object</a></li>
     <li><a href="dom.html#resource-metadata-management"><span class="secno">3.1.2 </span>Resource metadata management</a></li>
     <li><a href="dom.html#dom-tree-accessors"><span class="secno">3.1.3 </span>DOM tree accessors</a></ul></li>
   <li><a href="dom.html#elements"><span class="secno">3.2 </span>Elements</a>
    <ul class="toc"><li><a href="dom.html#semantics-0"><span class="secno">3.2.1 </span>Semantics</a></li>
     <li><a href="dom.html#elements-in-the-dom"><span class="secno">3.2.2 </span>Elements in the DOM</a></li>
     <li><a href="dom.html#element-definitions"><span class="secno">3.2.3 </span>Element definitions</a>
      <ul class="toc"><li><a href="dom.html#attributes"><span class="secno">3.2.3.1 </span>Attributes</a></ul></li>
     <li><a href="dom.html#content-models"><span class="secno">3.2.4 </span>Content models</a>
      <ul class="toc"><li><a href="dom.html#kinds-of-content"><span class="secno">3.2.4.1 </span>Kinds of content</a>
        <ul class="toc"><li><a href="dom.html#metadata-content"><span class="secno">3.2.4.1.1 </span>Metadata content</a></li>
         <li><a href="dom.html#flow-content"><span class="secno">3.2.4.1.2 </span>Flow content</a></li>
         <li><a href="dom.html#sectioning-content"><span class="secno">3.2.4.1.3 </span>Sectioning content</a></li>
         <li><a href="dom.html#heading-content"><span class="secno">3.2.4.1.4 </span>Heading content</a></li>
         <li><a href="dom.html#phrasing-content"><span class="secno">3.2.4.1.5 </span>Phrasing content</a></li>
         <li><a href="dom.html#embedded-content"><span class="secno">3.2.4.1.6 </span>Embedded content</a></li>
         <li><a href="dom.html#interactive-content"><span class="secno">3.2.4.1.7 </span>Interactive content</a></li>
         <li><a href="dom.html#palpable-content"><span class="secno">3.2.4.1.8 </span>Palpable content</a></li>
         <li><a href="dom.html#script-supporting-elements"><span class="secno">3.2.4.1.9 </span>Script-supporting elements</a></ul></li>
       <li><a href="dom.html#transparent-content-models"><span class="secno">3.2.4.2 </span>Transparent content models</a></li>
       <li><a href="dom.html#paragraphs"><span class="secno">3.2.4.3 </span>Paragraphs</a></ul></li>
     <li><a href="dom.html#global-attributes"><span class="secno">3.2.5 </span>Global attributes</a>
      <ul class="toc"><li><a href="dom.html#the-id-attribute"><span class="secno">3.2.5.1 </span>The <code>id</code> attribute</a></li>
       <li><a href="dom.html#the-title-attribute"><span class="secno">3.2.5.2 </span>The <code data-anolis-xref="attr-title">title</code> attribute</a></li>
       <li><a href="dom.html#the-lang-and-xml:lang-attributes"><span class="secno">3.2.5.3 </span>The <code data-anolis-xref="attr-lang">lang</code> and <code data-anolis-xref="attr-xml-lang">xml:lang</code> attributes</a></li>
       <li><a href="dom.html#the-translate-attribute"><span class="secno">3.2.5.4 </span>The <code data-anolis-xref="attr-translate">translate</code> attribute</a></li>
       <li><a href="dom.html#the-xml:base-attribute-(xml-only)"><span class="secno">3.2.5.5 </span>The <code>xml:base</code> attribute (XML only)</a></li>
       <li><a href="dom.html#the-dir-attribute"><span class="secno">3.2.5.6 </span>The <code>dir</code> attribute</a></li>
       <li><a href="dom.html#classes"><span class="secno">3.2.5.7 </span>The <code>class</code> attribute</a></li>
       <li><a href="dom.html#the-style-attribute"><span class="secno">3.2.5.8 </span>The <code>style</code> attribute</a></li>
       <li><a href="dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes"><span class="secno">3.2.5.9 </span>Embedding custom non-visible data with the <code data-anolis-xref="attr-data-*">data-*</code> attributes</a></ul></li>
     <li><a href="dom.html#requirements-relating-to-the-bidirectional-algorithm"><span class="secno">3.2.6 </span>Requirements relating to the bidirectional algorithm</a>
      <ul class="toc"><li><a href="dom.html#authoring-conformance-criteria-for-bidirectional-algorithm-formatting-characters"><span class="secno">3.2.6.1 </span>Authoring conformance criteria for bidirectional-algorithm formatting characters</a></li>
       <li><a href="dom.html#user-agent-conformance-criteria"><span class="secno">3.2.6.2 </span>User agent conformance criteria</a></ul></li>
     <li><a href="dom.html#wai-aria"><span class="secno">3.2.7 </span>WAI-ARIA</a>
      <ul class="toc"><li><a href="dom.html#aria-role-attribute"><span class="secno">3.2.7.1 </span>ARIA Role Attribute</a></li>
       <li><a href="dom.html#state-and-property-attributes"><span class="secno">3.2.7.2 </span>State and Property Attributes</a></li>
       <li><a href="dom.html#sec-strong-native-semantics"><span class="secno">3.2.7.3 </span>Strong Native Semantics</a></li>
       <li><a href="dom.html#sec-implicit-aria-semantics"><span class="secno">3.2.7.4 </span>Implicit ARIA Semantics</a></li>
       <li><a href="dom.html#allowed-aria-roles,-states-and-properties"><span class="secno">3.2.7.5 </span>Allowed ARIA roles, states and properties</a></ul></ul></ul></li>
 <li><a href="semantics.html#semantics"><span class="secno">4 </span>The elements of HTML</a>
  <ul class="toc"><li><a href="semantics.html#the-root-element"><span class="secno">4.1 </span>The root element</a>
    <ul class="toc"><li><a href="semantics.html#the-html-element"><span class="secno">4.1.1 </span>The <code>html</code> element</a></ul></li>
   <li><a href="document-metadata.html#document-metadata"><span class="secno">4.2 </span>Document metadata</a>
    <ul class="toc"><li><a href="document-metadata.html#the-head-element"><span class="secno">4.2.1 </span>The <code>head</code> element</a></li>
     <li><a href="document-metadata.html#the-title-element"><span class="secno">4.2.2 </span>The <code>title</code> element</a></li>
     <li><a href="document-metadata.html#the-base-element"><span class="secno">4.2.3 </span>The <code>base</code> element</a></li>
     <li><a href="document-metadata.html#the-link-element"><span class="secno">4.2.4 </span>The <code>link</code> element</a></li>
     <li><a href="document-metadata.html#the-meta-element"><span class="secno">4.2.5 </span>The <code>meta</code> element</a>
      <ul class="toc"><li><a href="document-metadata.html#standard-metadata-names"><span class="secno">4.2.5.1 </span>Standard metadata names</a></li>
       <li><a href="document-metadata.html#other-metadata-names"><span class="secno">4.2.5.2 </span>Other metadata names</a></li>
       <li><a href="document-metadata.html#pragma-directives"><span class="secno">4.2.5.3 </span>Pragma directives</a></li>
       <li><a href="document-metadata.html#other-pragma-directives"><span class="secno">4.2.5.4 </span>Other pragma directives</a></li>
       <li><a href="document-metadata.html#charset"><span class="secno">4.2.5.5 </span>Specifying the document's character encoding</a></ul></li>
     <li><a href="document-metadata.html#the-style-element"><span class="secno">4.2.6 </span>The <code>style</code> element</a></li>
     <li><a href="document-metadata.html#styling"><span class="secno">4.2.7 </span>Styling</a></ul></li>
   <li><a href="sections.html#sections"><span class="secno">4.3 </span>Sections</a>
    <ul class="toc"><li><a href="sections.html#the-body-element"><span class="secno">4.3.1 </span>The <code>body</code> element</a></li>
     <li><a href="sections.html#the-article-element"><span class="secno">4.3.2 </span>The <code>article</code> element</a></li>
     <li><a href="sections.html#the-section-element"><span class="secno">4.3.3 </span>The <code>section</code> element</a></li>
     <li><a href="sections.html#the-nav-element"><span class="secno">4.3.4 </span>The <code>nav</code> element</a></li>
     <li><a href="sections.html#the-aside-element"><span class="secno">4.3.5 </span>The <code>aside</code> element</a></li>
     <li><a href="sections.html#the-h1,-h2,-h3,-h4,-h5,-and-h6-elements"><span class="secno">4.3.6 </span>The <code>h1</code>, <code>h2</code>, <code>h3</code>, <code>h4</code>, <code>h5</code>, and
  <code>h6</code> elements</a></li>
     <li><a href="sections.html#the-header-element"><span class="secno">4.3.7 </span>The <code>header</code> element</a></li>
     <li><a href="sections.html#the-footer-element"><span class="secno">4.3.8 </span>The <code>footer</code> element</a></li>
     <li><a href="sections.html#the-address-element"><span class="secno">4.3.9 </span>The <code>address</code> element</a></li>
     <li><a href="sections.html#headings-and-sections"><span class="secno">4.3.10 </span>Headings and sections</a>
      <ul class="toc"><li><a href="sections.html#outlines"><span class="secno">4.3.10.1 </span>Creating an outline</a></li>
       <li><a href="sections.html#sample-outlines"><span class="secno">4.3.10.2 </span>Sample outlines</a></ul></li>
     <li><a href="sections.html#usage-summary-0"><span class="secno">4.3.11 </span>Usage summary</a>
      <ul class="toc"><li><a href="sections.html#article-or-section?"><span class="secno">4.3.11.1 </span>Article or section?</a></ul></ul></li>
   <li><a href="grouping-content.html#grouping-content"><span class="secno">4.4 </span>Grouping content</a>
    <ul class="toc"><li><a href="grouping-content.html#the-p-element"><span class="secno">4.4.1 </span>The <code>p</code> element</a></li>
     <li><a href="grouping-content.html#the-hr-element"><span class="secno">4.4.2 </span>The <code>hr</code> element</a></li>
     <li><a href="grouping-content.html#the-pre-element"><span class="secno">4.4.3 </span>The <code>pre</code> element</a></li>
     <li><a href="grouping-content.html#the-blockquote-element"><span class="secno">4.4.4 </span>The <code>blockquote</code> element</a></li>
     <li><a href="grouping-content.html#the-ol-element"><span class="secno">4.4.5 </span>The <code>ol</code> element</a></li>
     <li><a href="grouping-content.html#the-ul-element"><span class="secno">4.4.6 </span>The <code>ul</code> element</a></li>
     <li><a href="grouping-content.html#the-li-element"><span class="secno">4.4.7 </span>The <code>li</code> element</a></li>
     <li><a href="grouping-content.html#the-dl-element"><span class="secno">4.4.8 </span>The <code>dl</code> element</a></li>
     <li><a href="grouping-content.html#the-dt-element"><span class="secno">4.4.9 </span>The <code>dt</code> element</a></li>
     <li><a href="grouping-content.html#the-dd-element"><span class="secno">4.4.10 </span>The <code>dd</code> element</a></li>
     <li><a href="grouping-content.html#the-figure-element"><span class="secno">4.4.11 </span>The <code>figure</code> element</a></li>
     <li><a href="grouping-content.html#the-figcaption-element"><span class="secno">4.4.12 </span>The <code>figcaption</code> element</a></li>
     <li><a href="grouping-content.html#the-div-element"><span class="secno">4.4.13 </span>The <code>div</code> element</a></li>
     <li><a href="grouping-content.html#the-main-element"><span class="secno">4.4.14 </span>The <code>main</code> element</a></ul></li>
   <li><a href="text-level-semantics.html#text-level-semantics"><span class="secno">4.5 </span>Text-level semantics</a>
    <ul class="toc"><li><a href="text-level-semantics.html#the-a-element"><span class="secno">4.5.1 </span>The <code>a</code> element</a></li>
     <li><a href="text-level-semantics.html#the-em-element"><span class="secno">4.5.2 </span>The <code>em</code> element</a></li>
     <li><a href="text-level-semantics.html#the-strong-element"><span class="secno">4.5.3 </span>The <code>strong</code> element</a></li>
     <li><a href="text-level-semantics.html#the-small-element"><span class="secno">4.5.4 </span>The <code>small</code> element</a></li>
     <li><a href="text-level-semantics.html#the-s-element"><span class="secno">4.5.5 </span>The <code>s</code> element</a></li>
     <li><a href="text-level-semantics.html#the-cite-element"><span class="secno">4.5.6 </span>The <code>cite</code> element</a></li>
     <li><a href="text-level-semantics.html#the-q-element"><span class="secno">4.5.7 </span>The <code>q</code> element</a></li>
     <li><a href="text-level-semantics.html#the-dfn-element"><span class="secno">4.5.8 </span>The <code>dfn</code> element</a></li>
     <li><a href="text-level-semantics.html#the-abbr-element"><span class="secno">4.5.9 </span>The <code>abbr</code> element</a></li>
     <li><a href="text-level-semantics.html#the-data-element"><span class="secno">4.5.10 </span>The <code>data</code> element</a></li>
     <li><a href="text-level-semantics.html#the-time-element"><span class="secno">4.5.11 </span>The <code>time</code> element</a></li>
     <li><a href="text-level-semantics.html#the-code-element"><span class="secno">4.5.12 </span>The <code>code</code> element</a></li>
     <li><a href="text-level-semantics.html#the-var-element"><span class="secno">4.5.13 </span>The <code>var</code> element</a></li>
     <li><a href="text-level-semantics.html#the-samp-element"><span class="secno">4.5.14 </span>The <code>samp</code> element</a></li>
     <li><a href="text-level-semantics.html#the-kbd-element"><span class="secno">4.5.15 </span>The <code>kbd</code> element</a></li>
     <li><a href="text-level-semantics.html#the-sub-and-sup-elements"><span class="secno">4.5.16 </span>The <code>sub</code> and <code>sup</code> elements</a></li>
     <li><a href="text-level-semantics.html#the-i-element"><span class="secno">4.5.17 </span>The <code>i</code> element</a></li>
     <li><a href="text-level-semantics.html#the-b-element"><span class="secno">4.5.18 </span>The <code>b</code> element</a></li>
     <li><a href="text-level-semantics.html#the-u-element"><span class="secno">4.5.19 </span>The <code>u</code> element</a></li>
     <li><a href="text-level-semantics.html#the-mark-element"><span class="secno">4.5.20 </span>The <code>mark</code> element</a></li>
     <li><a href="text-level-semantics.html#the-ruby-element"><span class="secno">4.5.21 </span>The <code>ruby</code> element</a></li>
     <li><a href="text-level-semantics.html#the-rb-element"><span class="secno">4.5.22 </span>The <code>rb</code> element</a></li>
     <li><a href="text-level-semantics.html#the-rt-element"><span class="secno">4.5.23 </span>The <code>rt</code> element</a></li>
     <li><a href="text-level-semantics.html#the-rtc-element"><span class="secno">4.5.24 </span>The <code>rtc</code> element</a></li>
     <li><a href="text-level-semantics.html#the-rp-element"><span class="secno">4.5.25 </span>The <code>rp</code> element</a></li>
     <li><a href="text-level-semantics.html#the-bdi-element"><span class="secno">4.5.26 </span>The <code>bdi</code> element</a></li>
     <li><a href="text-level-semantics.html#the-bdo-element"><span class="secno">4.5.27 </span>The <code>bdo</code> element</a></li>
     <li><a href="text-level-semantics.html#the-span-element"><span class="secno">4.5.28 </span>The <code>span</code> element</a></li>
     <li><a href="text-level-semantics.html#the-br-element"><span class="secno">4.5.29 </span>The <code>br</code> element</a></li>
     <li><a href="text-level-semantics.html#the-wbr-element"><span class="secno">4.5.30 </span>The <code>wbr</code> element</a></li>
     <li><a href="text-level-semantics.html#usage-summary"><span class="secno">4.5.31 </span>Usage summary</a></ul></li>
   <li><a href="edits.html#edits"><span class="secno">4.6 </span>Edits</a>
    <ul class="toc"><li><a href="edits.html#the-ins-element"><span class="secno">4.6.1 </span>The <code>ins</code> element</a></li>
     <li><a href="edits.html#the-del-element"><span class="secno">4.6.2 </span>The <code>del</code> element</a></li>
     <li><a href="edits.html#attributes-common-to-ins-and-del-elements"><span class="secno">4.6.3 </span>Attributes common to <code>ins</code> and <code>del</code> elements</a></li>
     <li><a href="edits.html#edits-and-paragraphs"><span class="secno">4.6.4 </span>Edits and paragraphs</a></li>
     <li><a href="edits.html#edits-and-lists"><span class="secno">4.6.5 </span>Edits and lists</a></li>
     <li><a href="edits.html#edits-and-tables"><span class="secno">4.6.6 </span>Edits and tables</a></ul></li>
   <li><a href="embedded-content-0.html#embedded-content-0"><span class="secno">4.7 </span>Embedded content</a>
    <ul class="toc"><li><a href="embedded-content-0.html#the-img-element"><span class="secno">4.7.1 </span>The <code>img</code> element</a>
      <ul class="toc"><li><a href="embedded-content-0.html#alt"><span class="secno">4.7.1.1 </span>Requirements for providing text to act as an alternative for images</a>
        <ul class="toc"><li><a href="embedded-content-0.html#examples-of-scenarios-where-users-benefit-from-text-alternatives-for-images"><span class="secno">4.7.1.1.1 </span>Examples of scenarios where users benefit from text alternatives for images</a></li>
         <li><a href="embedded-content-0.html#general-guidelines"><span class="secno">4.7.1.1.2 </span>General guidelines</a></li>
         <li><a href="embedded-content-0.html#a-link-or-button-containing-nothing-but-an-image"><span class="secno">4.7.1.1.3 </span>A link or button containing nothing but an image</a></li>
         <li><a href="embedded-content-0.html#graphical-representations:-charts,-diagrams,-graphs,-maps,-illustrations"><span class="secno">4.7.1.1.4 </span>Graphical Representations: Charts, diagrams, graphs, maps, illustrations</a></li>
         <li><a href="embedded-content-0.html#images-of-text"><span class="secno">4.7.1.1.5 </span>Images of text</a></li>
         <li><a href="embedded-content-0.html#images-that-include-text"><span class="secno">4.7.1.1.6 </span>Images that include text</a></li>
         <li><a href="embedded-content-0.html#images-that-enhance-the-themes-or-subject-matter-of-the-page-content"><span class="secno">4.7.1.1.7 </span>Images that enhance the themes or subject matter of the page content</a></li>
         <li><a href="embedded-content-0.html#a-graphical-representation-of-some-of-the-surrounding-text"><span class="secno">4.7.1.1.8 </span>A graphical representation of some of the surrounding text</a></li>
         <li><a href="embedded-content-0.html#a-purely-decorative-image-that-doesn't-add-any-information"><span class="secno">4.7.1.1.9 </span>A purely decorative image that doesn't add any information</a></li>
         <li><a href="embedded-content-0.html#inline"><span class="secno">4.7.1.1.10 </span>Inline images</a></li>
         <li><a href="embedded-content-0.html#a-group-of-images-that-form-a-single-larger-picture-with-no-links"><span class="secno">4.7.1.1.11 </span>A group of images that form a single larger picture with no links</a></li>
         <li><a href="embedded-content-0.html#image-maps-0"><span class="secno">4.7.1.1.12 </span>Image maps</a></li>
         <li><a href="embedded-content-0.html#a-group-of-images-that-form-a-single-larger-picture-with-links"><span class="secno">4.7.1.1.13 </span>A group of images that form a single larger picture with links</a></li>
         <li><a href="embedded-content-0.html#images-of-pictures"><span class="secno">4.7.1.1.14 </span>Images of Pictures</a></li>
         <li><a href="embedded-content-0.html#webcam-images"><span class="secno">4.7.1.1.15 </span>Webcam images</a></li>
         <li><a href="embedded-content-0.html#when-a-text-alternative-is-not-available-at-the-time-of-publication"><span class="secno">4.7.1.1.16 </span>When a text alternative is not available at the time of publication</a></li>
         <li><a href="embedded-content-0.html#an-image-not-intended-for-the-user"><span class="secno">4.7.1.1.17 </span>An image not intended for the user</a></li>
         <li><a href="embedded-content-0.html#icon-images"><span class="secno">4.7.1.1.18 </span>Icon Images</a></li>
         <li><a href="embedded-content-0.html#logos,-insignia,-flags,-or-emblems"><span class="secno">4.7.1.1.19 </span>Logos, insignia, flags, or emblems</a></li>
         <li><a href="embedded-content-0.html#captcha-images"><span class="secno">4.7.1.1.20 </span>CAPTCHA Images</a></li>
         <li><a href="embedded-content-0.html#guidance-for-markup-generators"><span class="secno">4.7.1.1.21 </span>Guidance for markup generators</a></li>
         <li><a href="embedded-content-0.html#guidance-for-conformance-checkers"><span class="secno">4.7.1.1.22 </span>Guidance for conformance checkers</a></ul></ul></li>
     <li><a href="embedded-content-0.html#the-iframe-element"><span class="secno">4.7.2 </span>The <code>iframe</code> element</a></li>
     <li><a href="embedded-content-0.html#the-embed-element"><span class="secno">4.7.3 </span>The <code>embed</code> element</a></li>
     <li><a href="embedded-content-0.html#the-object-element"><span class="secno">4.7.4 </span>The <code>object</code> element</a></li>
     <li><a href="embedded-content-0.html#the-param-element"><span class="secno">4.7.5 </span>The <code>param</code> element</a></li>
     <li><a href="embedded-content-0.html#the-video-element"><span class="secno">4.7.6 </span>The <code>video</code> element</a></li>
     <li><a href="embedded-content-0.html#the-audio-element"><span class="secno">4.7.7 </span>The <code>audio</code> element</a></li>
     <li><a href="embedded-content-0.html#the-source-element"><span class="secno">4.7.8 </span>The <code>source</code> element</a></li>
     <li><a href="embedded-content-0.html#the-track-element"><span class="secno">4.7.9 </span>The <code>track</code> element</a></li>
     <li><a href="embedded-content-0.html#media-elements"><span class="secno">4.7.10 </span>Media elements</a>
      <ul class="toc"><li><a href="embedded-content-0.html#error-codes"><span class="secno">4.7.10.1 </span>Error codes</a></li>
       <li><a href="embedded-content-0.html#location-of-the-media-resource"><span class="secno">4.7.10.2 </span>Location of the media resource</a></li>
       <li><a href="embedded-content-0.html#mime-types"><span class="secno">4.7.10.3 </span>MIME types</a></li>
       <li><a href="embedded-content-0.html#network-states"><span class="secno">4.7.10.4 </span>Network states</a></li>
       <li><a href="embedded-content-0.html#loading-the-media-resource"><span class="secno">4.7.10.5 </span>Loading the media resource</a></li>
       <li><a href="embedded-content-0.html#offsets-into-the-media-resource"><span class="secno">4.7.10.6 </span>Offsets into the media resource</a></li>
       <li><a href="embedded-content-0.html#ready-states"><span class="secno">4.7.10.7 </span>Ready states</a></li>
       <li><a href="embedded-content-0.html#playing-the-media-resource"><span class="secno">4.7.10.8 </span>Playing the media resource</a></li>
       <li><a href="embedded-content-0.html#seeking"><span class="secno">4.7.10.9 </span>Seeking</a></li>
       <li><a href="embedded-content-0.html#media-resources-with-multiple-media-tracks"><span class="secno">4.7.10.10 </span>Media resources with multiple media tracks</a>
        <ul class="toc"><li><a href="embedded-content-0.html#audiotracklist-and-videotracklist-objects"><span class="secno">4.7.10.10.1 </span><code>AudioTrackList</code> and <code>VideoTrackList</code> objects</a></li>
         <li><a href="embedded-content-0.html#selecting-specific-audio-and-video-tracks-declaratively"><span class="secno">4.7.10.10.2 </span>Selecting specific audio and video tracks declaratively</a></ul></li>
       <li><a href="embedded-content-0.html#synchronising-multiple-media-elements"><span class="secno">4.7.10.11 </span>Synchronising multiple media elements</a>
        <ul class="toc"><li><a href="embedded-content-0.html#introduction-0"><span class="secno">4.7.10.11.1 </span>Introduction</a></li>
         <li><a href="embedded-content-0.html#media-controllers"><span class="secno">4.7.10.11.2 </span>Media controllers</a></li>
         <li><a href="embedded-content-0.html#assigning-a-media-controller-declaratively"><span class="secno">4.7.10.11.3 </span>Assigning a media controller declaratively</a></ul></li>
       <li><a href="embedded-content-0.html#timed-text-tracks"><span class="secno">4.7.10.12 </span>Timed text tracks</a>
        <ul class="toc"><li><a href="embedded-content-0.html#text-track-model"><span class="secno">4.7.10.12.1 </span>Text track model</a></li>
         <li><a href="embedded-content-0.html#sourcing-in-band-text-tracks"><span class="secno">4.7.10.12.2 </span>Sourcing in-band text tracks</a></li>
         <li><a href="embedded-content-0.html#sourcing-out-of-band-text-tracks"><span class="secno">4.7.10.12.3 </span>Sourcing out-of-band text tracks</a></li>
         <li><a href="embedded-content-0.html#guidelines-for-exposing-cues-in-various-formats-as-text-track-cues"><span class="secno">4.7.10.12.4 </span>Guidelines for exposing cues in various formats as <span data-anolis-xref="text track
  cue">text track cues</span></a></li>
         <li><a href="embedded-content-0.html#text-track-api"><span class="secno">4.7.10.12.5 </span>Text track API</a></li>
         <li><a href="embedded-content-0.html#text-tracks-describing-chapters"><span class="secno">4.7.10.12.6 </span>Text tracks describing chapters</a></li>
         <li><a href="embedded-content-0.html#cue-events"><span class="secno">4.7.10.12.7 </span>Event definitions</a></ul></li>
       <li><a href="embedded-content-0.html#user-interface"><span class="secno">4.7.10.13 </span>User interface</a></li>
       <li><a href="embedded-content-0.html#time-ranges"><span class="secno">4.7.10.14 </span>Time ranges</a></li>
       <li><a href="embedded-content-0.html#event-definitions"><span class="secno">4.7.10.15 </span>Event definitions</a></li>
       <li><a href="embedded-content-0.html#mediaevents"><span class="secno">4.7.10.16 </span>Event summary</a></li>
       <li><a href="embedded-content-0.html#security-and-privacy-considerations"><span class="secno">4.7.10.17 </span>Security and privacy considerations</a></li>
       <li><a href="embedded-content-0.html#best-practices-for-authors-using-media-elements"><span class="secno">4.7.10.18 </span>Best practices for authors using media elements</a></li>
       <li><a href="embedded-content-0.html#best-practices-for-implementors-of-media-elements"><span class="secno">4.7.10.19 </span>Best practices for implementors of media elements</a></ul></li>
     <li><a href="embedded-content-0.html#the-map-element"><span class="secno">4.7.11 </span>The <code>map</code> element</a></li>
     <li><a href="embedded-content-0.html#the-area-element"><span class="secno">4.7.12 </span>The <code>area</code> element</a></li>
     <li><a href="embedded-content-0.html#image-maps"><span class="secno">4.7.13 </span>Image maps</a>
      <ul class="toc"><li><a href="embedded-content-0.html#authoring"><span class="secno">4.7.13.1 </span>Authoring</a></li>
       <li><a href="embedded-content-0.html#processing-model-0"><span class="secno">4.7.13.2 </span>Processing model</a></ul></li>
     <li><a href="embedded-content-0.html#mathml"><span class="secno">4.7.14 </span>MathML</a></li>
     <li><a href="embedded-content-0.html#svg"><span class="secno">4.7.15 </span>SVG</a></li>
     <li><a href="embedded-content-0.html#dimension-attributes"><span class="secno">4.7.16 </span>Dimension attributes</a></ul></li>
   <li><a href="links.html#links"><span class="secno">4.8 </span>Links</a>
    <ul class="toc"><li><a href="links.html#links-created-by-a-and-area-elements"><span class="secno">4.8.1 </span>Links created by <code>a</code> and <code>area</code> elements</a></li>
     <li><a href="links.html#following-hyperlinks-0"><span class="secno">4.8.2 </span>Following hyperlinks</a></li>
     <li><a href="links.html#downloading-resources"><span class="secno">4.8.3 </span>Downloading resources</a></li>
     <li><a href="links.html#linkTypes"><span class="secno">4.8.4 </span>Link types</a>
      <ul class="toc"><li><a href="links.html#rel-alternate"><span class="secno">4.8.4.1 </span>Link type "<code>alternate</code>"</a></li>
       <li><a href="links.html#link-type-author"><span class="secno">4.8.4.2 </span>Link type "<code>author</code>"</a></li>
       <li><a href="links.html#link-type-bookmark"><span class="secno">4.8.4.3 </span>Link type "<code>bookmark</code>"</a></li>
       <li><a href="links.html#link-type-help"><span class="secno">4.8.4.4 </span>Link type "<code>help</code>"</a></li>
       <li><a href="links.html#rel-icon"><span class="secno">4.8.4.5 </span>Link type "<code>icon</code>"</a></li>
       <li><a href="links.html#link-type-license"><span class="secno">4.8.4.6 </span>Link type "<code>license</code>"</a></li>
       <li><a href="links.html#link-type-nofollow"><span class="secno">4.8.4.7 </span>Link type "<code>nofollow</code>"</a></li>
       <li><a href="links.html#link-type-noreferrer"><span class="secno">4.8.4.8 </span>Link type "<code>noreferrer</code>"</a></li>
       <li><a href="links.html#link-type-prefetch"><span class="secno">4.8.4.9 </span>Link type "<code>prefetch</code>"</a></li>
       <li><a href="links.html#link-type-search"><span class="secno">4.8.4.10 </span>Link type "<code>search</code>"</a></li>
       <li><a href="links.html#link-type-stylesheet"><span class="secno">4.8.4.11 </span>Link type "<code>stylesheet</code>"</a></li>
       <li><a href="links.html#link-type-tag"><span class="secno">4.8.4.12 </span>Link type "<code>tag</code>"</a></li>
       <li><a href="links.html#sequential-link-types"><span class="secno">4.8.4.13 </span>Sequential link types</a>
        <ul class="toc"><li><a href="links.html#link-type-next"><span class="secno">4.8.4.13.1 </span>Link type "<code>next</code>"</a></li>
         <li><a href="links.html#link-type-prev"><span class="secno">4.8.4.13.2 </span>Link type "<code>prev</code>"</a></ul></li>
       <li><a href="links.html#other-link-types"><span class="secno">4.8.4.14 </span>Other link types</a></ul></ul></li>
   <li><a href="tabular-data.html#tabular-data"><span class="secno">4.9 </span>Tabular data</a>
    <ul class="toc"><li><a href="tabular-data.html#the-table-element"><span class="secno">4.9.1 </span>The <code>table</code> element</a>
      <ul class="toc"><li><a href="tabular-data.html#table-descriptions-techniques"><span class="secno">4.9.1.1 </span>Techniques for describing tables</a></li>
       <li><a href="tabular-data.html#table-layout-techniques"><span class="secno">4.9.1.2 </span>Techniques for table design</a></ul></li>
     <li><a href="tabular-data.html#the-caption-element"><span class="secno">4.9.2 </span>The <code>caption</code> element</a></li>
     <li><a href="tabular-data.html#the-colgroup-element"><span class="secno">4.9.3 </span>The <code>colgroup</code> element</a></li>
     <li><a href="tabular-data.html#the-col-element"><span class="secno">4.9.4 </span>The <code>col</code> element</a></li>
     <li><a href="tabular-data.html#the-tbody-element"><span class="secno">4.9.5 </span>The <code>tbody</code> element</a></li>
     <li><a href="tabular-data.html#the-thead-element"><span class="secno">4.9.6 </span>The <code>thead</code> element</a></li>
     <li><a href="tabular-data.html#the-tfoot-element"><span class="secno">4.9.7 </span>The <code>tfoot</code> element</a></li>
     <li><a href="tabular-data.html#the-tr-element"><span class="secno">4.9.8 </span>The <code>tr</code> element</a></li>
     <li><a href="tabular-data.html#the-td-element"><span class="secno">4.9.9 </span>The <code>td</code> element</a></li>
     <li><a href="tabular-data.html#the-th-element"><span class="secno">4.9.10 </span>The <code>th</code> element</a></li>
     <li><a href="tabular-data.html#attributes-common-to-td-and-th-elements"><span class="secno">4.9.11 </span>Attributes common to <code>td</code> and <code>th</code> elements</a></li>
     <li><a href="tabular-data.html#processing-model-1"><span class="secno">4.9.12 </span>Processing model</a>
      <ul class="toc"><li><a href="tabular-data.html#forming-a-table"><span class="secno">4.9.12.1 </span>Forming a table</a></li>
       <li><a href="tabular-data.html#header-and-data-cell-semantics"><span class="secno">4.9.12.2 </span>Forming relationships between data cells and header cells</a></ul></ul></li>
   <li><a href="forms.html#forms"><span class="secno">4.10 </span>Forms</a>
    <ul class="toc"><li><a href="forms.html#introduction-1"><span class="secno">4.10.1 </span>Introduction</a>
      <ul class="toc"><li><a href="forms.html#writing-a-form's-user-interface"><span class="secno">4.10.1.1 </span>Writing a form's user interface</a></li>
       <li><a href="forms.html#implementing-the-server-side-processing-for-a-form"><span class="secno">4.10.1.2 </span>Implementing the server-side processing for a form</a></li>
       <li><a href="forms.html#configuring-a-form-to-communicate-with-a-server"><span class="secno">4.10.1.3 </span>Configuring a form to communicate with a server</a></li>
       <li><a href="forms.html#client-side-form-validation"><span class="secno">4.10.1.4 </span>Client-side form validation</a></li>
       <li><a href="forms.html#input-author-notes"><span class="secno">4.10.1.5 </span>Date, time, and number formats</a></ul></li>
     <li><a href="forms.html#categories"><span class="secno">4.10.2 </span>Categories</a></li>
     <li><a href="forms.html#the-form-element"><span class="secno">4.10.3 </span>The <code>form</code> element</a></li>
     <li><a href="forms.html#the-label-element"><span class="secno">4.10.4 </span>The <code>label</code> element</a></li>
     <li><a href="forms.html#the-input-element"><span class="secno">4.10.5 </span>The <code>input</code> element</a>
      <ul class="toc"><li><a href="forms.html#states-of-the-type-attribute"><span class="secno">4.10.5.1 </span>States of the <code data-anolis-xref="attr-input-type">type</code> attribute</a>
        <ul class="toc"><li><a href="forms.html#hidden-state-(type=hidden)"><span class="secno">4.10.5.1.1 </span>Hidden state (<code data-anolis-xref="">type=hidden</code>)</a></li>
         <li><a href="forms.html#text-(type=text)-state-and-search-state-(type=search)"><span class="secno">4.10.5.1.2 </span>Text (<code data-anolis-xref="">type=text</code>) state and Search state (<code data-anolis-xref="">type=search</code>)</a></li>
         <li><a href="forms.html#telephone-state-(type=tel)"><span class="secno">4.10.5.1.3 </span>Telephone state (<code data-anolis-xref="">type=tel</code>)</a></li>
         <li><a href="forms.html#url-state-(type=url)"><span class="secno">4.10.5.1.4 </span>URL state (<code data-anolis-xref="">type=url</code>)</a></li>
         <li><a href="forms.html#e-mail-state-(type=email)"><span class="secno">4.10.5.1.5 </span>E-mail state (<code data-anolis-xref="">type=email</code>)</a></li>
         <li><a href="forms.html#password-state-(type=password)"><span class="secno">4.10.5.1.6 </span>Password state (<code data-anolis-xref="">type=password</code>)</a></li>
         <li><a href="forms.html#date-state-(type=date)"><span class="secno">4.10.5.1.7 </span>Date state (<code data-anolis-xref="">type=date</code>)</a></li>
         <li><a href="forms.html#time-state-(type=time)"><span class="secno">4.10.5.1.8 </span>Time state (<code data-anolis-xref="">type=time</code>)</a></li>
         <li><a href="forms.html#number-state-(type=number)"><span class="secno">4.10.5.1.9 </span>Number state (<code data-anolis-xref="">type=number</code>)</a></li>
         <li><a href="forms.html#range-state-(type=range)"><span class="secno">4.10.5.1.10 </span>Range state (<code data-anolis-xref="">type=range</code>)</a></li>
         <li><a href="forms.html#color-state-(type=color)"><span class="secno">4.10.5.1.11 </span>Color state (<code data-anolis-xref="">type=color</code>)</a></li>
         <li><a href="forms.html#checkbox-state-(type=checkbox)"><span class="secno">4.10.5.1.12 </span>Checkbox state (<code data-anolis-xref="">type=checkbox</code>)</a></li>
         <li><a href="forms.html#radio-button-state-(type=radio)"><span class="secno">4.10.5.1.13 </span>Radio Button state (<code data-anolis-xref="">type=radio</code>)</a></li>
         <li><a href="forms.html#file-upload-state-(type=file)"><span class="secno">4.10.5.1.14 </span>File Upload state (<code data-anolis-xref="">type=file</code>)</a></li>
         <li><a href="forms.html#submit-button-state-(type=submit)"><span class="secno">4.10.5.1.15 </span>Submit Button state (<code data-anolis-xref="">type=submit</code>)</a></li>
         <li><a href="forms.html#image-button-state-(type=image)"><span class="secno">4.10.5.1.16 </span>Image Button state (<code data-anolis-xref="">type=image</code>)</a></li>
         <li><a href="forms.html#reset-button-state-(type=reset)"><span class="secno">4.10.5.1.17 </span>Reset Button state (<code data-anolis-xref="">type=reset</code>)</a></li>
         <li><a href="forms.html#button-state-(type=button)"><span class="secno">4.10.5.1.18 </span>Button state (<code data-anolis-xref="">type=button</code>)</a></ul></li>
       <li><a href="forms.html#input-impl-notes"><span class="secno">4.10.5.2 </span>Implemention notes regarding localization of form controls</a></li>
       <li><a href="forms.html#common-input-element-attributes"><span class="secno">4.10.5.3 </span>Common <code>input</code> element attributes</a>
        <ul class="toc"><li><a href="forms.html#the-maxlength-and-minlength-attributes"><span class="secno">4.10.5.3.1 </span>The <code data-anolis-xref="attr-input-maxlength">maxlength</code> and <code data-anolis-xref="attr-input-minlength">minlength</code> attributes</a></li>
         <li><a href="forms.html#the-size-attribute"><span class="secno">4.10.5.3.2 </span>The <code data-anolis-xref="attr-input-size">size</code> attribute</a></li>
         <li><a href="forms.html#the-readonly-attribute"><span class="secno">4.10.5.3.3 </span>The <code data-anolis-xref="attr-input-readonly">readonly</code> attribute</a></li>
         <li><a href="forms.html#the-required-attribute"><span class="secno">4.10.5.3.4 </span>The <code data-anolis-xref="attr-input-required">required</code> attribute</a></li>
         <li><a href="forms.html#the-multiple-attribute"><span class="secno">4.10.5.3.5 </span>The <code data-anolis-xref="attr-input-multiple">multiple</code> attribute</a></li>
         <li><a href="forms.html#the-pattern-attribute"><span class="secno">4.10.5.3.6 </span>The <code data-anolis-xref="attr-input-pattern">pattern</code> attribute</a></li>
         <li><a href="forms.html#the-min-and-max-attributes"><span class="secno">4.10.5.3.7 </span>The <code data-anolis-xref="attr-input-min">min</code> and <code data-anolis-xref="attr-input-max">max</code> attributes</a></li>
         <li><a href="forms.html#the-step-attribute"><span class="secno">4.10.5.3.8 </span>The <code data-anolis-xref="attr-input-step">step</code> attribute</a></li>
         <li><a href="forms.html#the-list-attribute"><span class="secno">4.10.5.3.9 </span>The <code data-anolis-xref="attr-input-list">list</code> attribute</a></li>
         <li><a href="forms.html#the-placeholder-attribute"><span class="secno">4.10.5.3.10 </span>The <code data-anolis-xref="attr-input-placeholder">placeholder</code> attribute</a></ul></li>
       <li><a href="forms.html#common-input-element-apis"><span class="secno">4.10.5.4 </span>Common <code>input</code> element APIs</a></li>
       <li><a href="forms.html#common-input-element-events"><span class="secno">4.10.5.5 </span>Common event behaviors</a></ul></li>
     <li><a href="forms.html#the-button-element"><span class="secno">4.10.6 </span>The <code>button</code> element</a></li>
     <li><a href="forms.html#the-select-element"><span class="secno">4.10.7 </span>The <code>select</code> element</a></li>
     <li><a href="forms.html#the-datalist-element"><span class="secno">4.10.8 </span>The <code>datalist</code> element</a></li>
     <li><a href="forms.html#the-optgroup-element"><span class="secno">4.10.9 </span>The <code>optgroup</code> element</a></li>
     <li><a href="forms.html#the-option-element"><span class="secno">4.10.10 </span>The <code>option</code> element</a></li>
     <li><a href="forms.html#the-textarea-element"><span class="secno">4.10.11 </span>The <code>textarea</code> element</a></li>
     <li><a href="forms.html#the-keygen-element"><span class="secno">4.10.12 </span>The <code>keygen</code> element</a></li>
     <li><a href="forms.html#the-output-element"><span class="secno">4.10.13 </span>The <code>output</code> element</a></li>
     <li><a href="forms.html#the-progress-element"><span class="secno">4.10.14 </span>The <code>progress</code> element</a></li>
     <li><a href="forms.html#the-meter-element"><span class="secno">4.10.15 </span>The <code>meter</code> element</a></li>
     <li><a href="forms.html#the-fieldset-element"><span class="secno">4.10.16 </span>The <code>fieldset</code> element</a></li>
     <li><a href="forms.html#the-legend-element"><span class="secno">4.10.17 </span>The <code>legend</code> element</a></li>
     <li><a href="forms.html#form-control-infrastructure"><span class="secno">4.10.18 </span>Form control infrastructure</a>
      <ul class="toc"><li><a href="forms.html#a-form-control's-value"><span class="secno">4.10.18.1 </span>A form control's value</a></li>
       <li><a href="forms.html#mutability"><span class="secno">4.10.18.2 </span>Mutability</a></li>
       <li><a href="forms.html#association-of-controls-and-forms"><span class="secno">4.10.18.3 </span>Association of controls and forms</a></ul></li>
     <li><a href="forms.html#attributes-common-to-form-controls"><span class="secno">4.10.19 </span>Attributes common to form controls</a>
      <ul class="toc"><li><a href="forms.html#naming-form-controls:-the-name-attribute"><span class="secno">4.10.19.1 </span>Naming form controls: the <code data-anolis-xref="attr-fe-name">name</code> attribute</a></li>
       <li><a href="forms.html#submitting-element-directionality:-the-dirname-attribute"><span class="secno">4.10.19.2 </span>Submitting element directionality: the <code data-anolis-xref="attr-fe-dirname">dirname</code> attribute</a></li>
       <li><a href="forms.html#limiting-user-input-length:-the-maxlength-attribute"><span class="secno">4.10.19.3 </span>Limiting user input length: the <code data-anolis-xref="attr-fe-maxlength">maxlength</code> attribute</a></li>
       <li><a href="forms.html#setting-minimum-input-length-requirements:-the-minlength-attribute"><span class="secno">4.10.19.4 </span>Setting minimum input length requirements: the <code data-anolis-xref="attr-fe-minlength">minlength</code> attribute</a></li>
       <li><a href="forms.html#enabling-and-disabling-form-controls:-the-disabled-attribute"><span class="secno">4.10.19.5 </span>Enabling and disabling form controls: the <code data-anolis-xref="attr-fe-disabled">disabled</code> attribute</a></li>
       <li><a href="forms.html#form-submission"><span class="secno">4.10.19.6 </span>Form submission</a></li>
       <li><a href="forms.html#autofocusing-a-form-control:-the-autofocus-attribute"><span class="secno">4.10.19.7 </span>Autofocusing a form control: the <code data-anolis-xref="attr-fe-autofocus">autofocus</code> attribute</a></li>
       <li><a href="forms.html#autofilling-form-controls:-the-autocomplete-attribute"><span class="secno">4.10.19.8 </span>Autofilling form controls: the <code data-anolis-xref="attr-fe-autocomplete">autocomplete</code> attribute</a></ul></li>
     <li><a href="forms.html#textFieldSelection"><span class="secno">4.10.20 </span>APIs for the text field selections</a></li>
     <li><a href="forms.html#constraints"><span class="secno">4.10.21 </span>Constraints</a>
      <ul class="toc"><li><a href="forms.html#definitions"><span class="secno">4.10.21.1 </span>Definitions</a></li>
       <li><a href="forms.html#constraint-validation"><span class="secno">4.10.21.2 </span>Constraint validation</a></li>
       <li><a href="forms.html#the-constraint-validation-api"><span class="secno">4.10.21.3 </span>The constraint validation API</a></li>
       <li><a href="forms.html#security-forms"><span class="secno">4.10.21.4 </span>Security</a></ul></li>
     <li><a href="forms.html#form-submission-0"><span class="secno">4.10.22 </span>Form submission</a>
      <ul class="toc"><li><a href="forms.html#introduction-2"><span class="secno">4.10.22.1 </span>Introduction</a></li>
       <li><a href="forms.html#implicit-submission"><span class="secno">4.10.22.2 </span>Implicit submission</a></li>
       <li><a href="forms.html#form-submission-algorithm"><span class="secno">4.10.22.3 </span>Form submission algorithm</a></li>
       <li><a href="forms.html#constructing-form-data-set"><span class="secno">4.10.22.4 </span>Constructing the form data set</a></li>
       <li><a href="forms.html#selecting-a-form-submission-encoding"><span class="secno">4.10.22.5 </span>Selecting a form submission encoding</a></li>
       <li><a href="forms.html#url-encoded-form-data"><span class="secno">4.10.22.6 </span>URL-encoded form data</a></li>
       <li><a href="forms.html#multipart-form-data"><span class="secno">4.10.22.7 </span>Multipart form data</a></li>
       <li><a href="forms.html#plain-text-form-data"><span class="secno">4.10.22.8 </span>Plain text form data</a></ul></li>
     <li><a href="forms.html#resetting-a-form"><span class="secno">4.10.23 </span>Resetting a form</a></ul></li>
   <li><a href="scripting-1.html#scripting-1"><span class="secno">4.11 </span>Scripting</a>
    <ul class="toc"><li><a href="scripting-1.html#the-script-element"><span class="secno">4.11.1 </span>The <code>script</code> element</a>
      <ul class="toc"><li><a href="scripting-1.html#scriptingLanguages"><span class="secno">4.11.1.1 </span>Scripting languages</a></li>
       <li><a href="scripting-1.html#restrictions-for-contents-of-script-elements"><span class="secno">4.11.1.2 </span>Restrictions for contents of <code>script</code> elements</a></li>
       <li><a href="scripting-1.html#inline-documentation-for-external-scripts"><span class="secno">4.11.1.3 </span>Inline documentation for external scripts</a></li>
       <li><a href="scripting-1.html#scriptTagXSLT"><span class="secno">4.11.1.4 </span>Interaction of <code>script</code> elements and XSLT</a></ul></li>
     <li><a href="scripting-1.html#the-noscript-element"><span class="secno">4.11.2 </span>The <code>noscript</code> element</a></li>
     <li><a href="scripting-1.html#the-template-element"><span class="secno">4.11.3 </span>The <code>template</code> element</a>
      <ul class="toc"><li><a href="scripting-1.html#template-XSLT-XPath"><span class="secno">4.11.3.1 </span>Interaction of <code>template</code> elements with XSLT and XPath</a></ul></li>
     <li><a href="scripting-1.html#the-canvas-element"><span class="secno">4.11.4 </span>The <code>canvas</code> element</a>
      <ul class="toc"><li><a href="scripting-1.html#color-spaces-and-color-correction"><span class="secno">4.11.4.1 </span>Color spaces and color correction</a></li>
       <li><a href="scripting-1.html#serializing-bitmaps-to-a-file"><span class="secno">4.11.4.2 </span>Serializing bitmaps to a file</a></li>
       <li><a href="scripting-1.html#security-with-canvas-elements"><span class="secno">4.11.4.3 </span>Security with <code>canvas</code> elements</a></ul></ul></li>
   <li><a href="common-idioms.html#common-idioms"><span class="secno">4.12 </span>Common idioms without dedicated elements</a>
    <ul class="toc"><li><a href="common-idioms.html#sub-head"><span class="secno">4.12.1 </span>Subheadings, subtitles, alternative titles and taglines</a></li>
     <li><a href="common-idioms.html#rel-up"><span class="secno">4.12.2 </span>Bread crumb navigation</a></li>
     <li><a href="common-idioms.html#tag-clouds"><span class="secno">4.12.3 </span>Tag clouds</a></li>
     <li><a href="common-idioms.html#conversations"><span class="secno">4.12.4 </span>Conversations</a></li>
     <li><a href="common-idioms.html#footnotes"><span class="secno">4.12.5 </span>Footnotes</a></ul></li>
   <li><a href="disabled-elements.html#disabled-elements"><span class="secno">4.13 </span>Disabled elements</a></li>
   <li><a href="disabled-elements.html#selectors"><span class="secno">4.14 </span>Matching HTML elements using selectors</a>
    <ul class="toc"><li><a href="disabled-elements.html#case-sensitivity"><span class="secno">4.14.1 </span>Case-sensitivity</a></li>
     <li><a href="disabled-elements.html#pseudo-classes"><span class="secno">4.14.2 </span>Pseudo-classes</a></ul></ul></li>
 <li><a href="browsers.html#browsers"><span class="secno">5 </span>Loading Web pages</a>
  <ul class="toc"><li><a href="browsers.html#windows"><span class="secno">5.1 </span>Browsing contexts</a>
    <ul class="toc"><li><a href="browsers.html#nested-browsing-contexts"><span class="secno">5.1.1 </span>Nested browsing contexts</a>
      <ul class="toc"><li><a href="browsers.html#navigating-nested-browsing-contexts-in-the-dom"><span class="secno">5.1.1.1 </span>Navigating nested browsing contexts in the DOM</a></ul></li>
     <li><a href="browsers.html#auxiliary-browsing-contexts"><span class="secno">5.1.2 </span>Auxiliary browsing contexts</a>
      <ul class="toc"><li><a href="browsers.html#navigating-auxiliary-browsing-contexts-in-the-dom"><span class="secno">5.1.2.1 </span>Navigating auxiliary browsing contexts in the DOM</a></ul></li>
     <li><a href="browsers.html#secondary-browsing-contexts"><span class="secno">5.1.3 </span>Secondary browsing contexts</a></li>
     <li><a href="browsers.html#security-nav"><span class="secno">5.1.4 </span>Security</a></li>
     <li><a href="browsers.html#groupings-of-browsing-contexts"><span class="secno">5.1.5 </span>Groupings of browsing contexts</a></li>
     <li><a href="browsers.html#browsing-context-names"><span class="secno">5.1.6 </span>Browsing context names</a></ul></li>
   <li><a href="browsers.html#the-window-object"><span class="secno">5.2 </span>The <code>Window</code> object</a>
    <ul class="toc"><li><a href="browsers.html#security-window"><span class="secno">5.2.1 </span>Security</a></li>
     <li><a href="browsers.html#apis-for-creating-and-navigating-browsing-contexts-by-name"><span class="secno">5.2.2 </span>APIs for creating and navigating browsing contexts by name</a></li>
     <li><a href="browsers.html#accessing-other-browsing-contexts"><span class="secno">5.2.3 </span>Accessing other browsing contexts</a></li>
     <li><a href="browsers.html#named-access-on-the-window-object"><span class="secno">5.2.4 </span>Named access on the <code>Window</code> object</a></li>
     <li><a href="browsers.html#garbage-collection-and-browsing-contexts"><span class="secno">5.2.5 </span>Garbage collection and browsing contexts</a></li>
     <li><a href="browsers.html#closing-browsing-contexts"><span class="secno">5.2.6 </span>Closing browsing contexts</a></li>
     <li><a href="browsers.html#browser-interface-elements"><span class="secno">5.2.7 </span>Browser interface elements</a></li>
     <li><a href="browsers.html#the-windowproxy-object"><span class="secno">5.2.8 </span>The <code>WindowProxy</code> object</a></ul></li>
   <li><a href="browsers.html#origin"><span class="secno">5.3 </span>Origin</a>
    <ul class="toc"><li><a href="browsers.html#relaxing-the-same-origin-restriction"><span class="secno">5.3.1 </span>Relaxing the same-origin restriction</a></ul></li>
   <li><a href="browsers.html#sandboxing"><span class="secno">5.4 </span>Sandboxing</a></li>
   <li><a href="browsers.html#history"><span class="secno">5.5 </span>Session history and navigation</a>
    <ul class="toc"><li><a href="browsers.html#the-session-history-of-browsing-contexts"><span class="secno">5.5.1 </span>The session history of browsing contexts</a></li>
     <li><a href="browsers.html#the-history-interface"><span class="secno">5.5.2 </span>The <code>History</code> interface</a></li>
     <li><a href="browsers.html#the-location-interface"><span class="secno">5.5.3 </span>The <code>Location</code> interface</a>
      <ul class="toc"><li><a href="browsers.html#security-location"><span class="secno">5.5.3.1 </span>Security</a></ul></li>
     <li><a href="browsers.html#history-notes"><span class="secno">5.5.4 </span>Implementation notes for session history</a></ul></li>
   <li><a href="browsers.html#browsing-the-web"><span class="secno">5.6 </span>Browsing the Web</a>
    <ul class="toc"><li><a href="browsers.html#navigating-across-documents"><span class="secno">5.6.1 </span>Navigating across documents</a></li>
     <li><a href="browsers.html#read-html"><span class="secno">5.6.2 </span>Page load processing model for HTML files</a></li>
     <li><a href="browsers.html#read-xml"><span class="secno">5.6.3 </span>Page load processing model for XML files</a></li>
     <li><a href="browsers.html#read-text"><span class="secno">5.6.4 </span>Page load processing model for text files</a></li>
     <li><a href="browsers.html#read-multipart-x-mixed-replace"><span class="secno">5.6.5 </span>Page load processing model for <code>multipart/x-mixed-replace</code> resources</a></li>
     <li><a href="browsers.html#read-media"><span class="secno">5.6.6 </span>Page load processing model for media</a></li>
     <li><a href="browsers.html#read-plugin"><span class="secno">5.6.7 </span>Page load processing model for content that uses plugins</a></li>
     <li><a href="browsers.html#read-ua-inline"><span class="secno">5.6.8 </span>Page load processing model for inline
  content that doesn't have a DOM</a></li>
     <li><a href="browsers.html#scroll-to-fragid"><span class="secno">5.6.9 </span>Navigating to a fragment identifier</a></li>
     <li><a href="browsers.html#history-traversal"><span class="secno">5.6.10 </span>History traversal</a>
      <ul class="toc"><li><a href="browsers.html#event-definitions-0"><span class="secno">5.6.10.1 </span>Event definitions</a></ul></li>
     <li><a href="browsers.html#unloading-documents"><span class="secno">5.6.11 </span>Unloading documents</a>
      <ul class="toc"><li><a href="browsers.html#event-definition"><span class="secno">5.6.11.1 </span>Event definition</a></ul></li>
     <li><a href="browsers.html#aborting-a-document-load"><span class="secno">5.6.12 </span>Aborting a document load</a></ul></li>
   <li><a href="browsers.html#offline"><span class="secno">5.7 </span>Offline Web applications</a>
    <ul class="toc"><li><a href="browsers.html#introduction-3"><span class="secno">5.7.1 </span>Introduction</a>
      <ul class="toc"><li><a href="browsers.html#supporting-offline-caching-for-legacy-applications"><span class="secno">5.7.1.1 </span>Supporting offline caching for legacy applications</a></li>
       <li><a href="browsers.html#appcacheevents"><span class="secno">5.7.1.2 </span>Event summary</a></ul></li>
     <li><a href="browsers.html#appcache"><span class="secno">5.7.2 </span>Application caches</a></li>
     <li><a href="browsers.html#manifests"><span class="secno">5.7.3 </span>The cache manifest syntax</a>
      <ul class="toc"><li><a href="browsers.html#some-sample-manifests"><span class="secno">5.7.3.1 </span>Some sample manifests</a></li>
       <li><a href="browsers.html#writing-cache-manifests"><span class="secno">5.7.3.2 </span>Writing cache manifests</a></li>
       <li><a href="browsers.html#parsing-cache-manifests"><span class="secno">5.7.3.3 </span>Parsing cache manifests</a></ul></li>
     <li><a href="browsers.html#downloading-or-updating-an-application-cache"><span class="secno">5.7.4 </span>Downloading or updating an application cache</a></li>
     <li><a href="browsers.html#the-application-cache-selection-algorithm"><span class="secno">5.7.5 </span>The application cache selection algorithm</a></li>
     <li><a href="browsers.html#changesToNetworkingModel"><span class="secno">5.7.6 </span>Changes to the networking model</a></li>
     <li><a href="browsers.html#expiring-application-caches"><span class="secno">5.7.7 </span>Expiring application caches</a></li>
     <li><a href="browsers.html#disk-space"><span class="secno">5.7.8 </span>Disk space</a></li>
     <li><a href="browsers.html#application-cache-api"><span class="secno">5.7.9 </span>Application cache API</a></li>
     <li><a href="browsers.html#browser-state"><span class="secno">5.7.10 </span>Browser state</a></ul></ul></li>
 <li><a href="webappapis.html#webappapis"><span class="secno">6 </span>Web application APIs</a>
  <ul class="toc"><li><a href="webappapis.html#scripting"><span class="secno">6.1 </span>Scripting</a>
    <ul class="toc"><li><a href="webappapis.html#introduction-4"><span class="secno">6.1.1 </span>Introduction</a></li>
     <li><a href="webappapis.html#enabling-and-disabling-scripting"><span class="secno">6.1.2 </span>Enabling and disabling scripting</a></li>
     <li><a href="webappapis.html#processing-model-2"><span class="secno">6.1.3 </span>Processing model</a>
      <ul class="toc"><li><a href="webappapis.html#definitions-0"><span class="secno">6.1.3.1 </span>Definitions</a></li>
       <li><a href="webappapis.html#script-settings-for-browsing-contexts"><span class="secno">6.1.3.2 </span>Script settings for browsing contexts</a></li>
       <li><a href="webappapis.html#calling-scripts"><span class="secno">6.1.3.3 </span>Calling scripts</a></li>
       <li><a href="webappapis.html#creating-scripts"><span class="secno">6.1.3.4 </span>Creating scripts</a></li>
       <li><a href="webappapis.html#killing-scripts"><span class="secno">6.1.3.5 </span>Killing scripts</a></li>
       <li><a href="webappapis.html#runtime-script-errors"><span class="secno">6.1.3.6 </span>Runtime script errors</a>
        <ul class="toc"><li><a href="webappapis.html#runtime-script-errors-in-documents"><span class="secno">6.1.3.6.1 </span>Runtime script errors in documents</a></li>
         <li><a href="webappapis.html#the-errorevent-interface"><span class="secno">6.1.3.6.2 </span>The <code>ErrorEvent</code> interface</a></ul></ul></li>
     <li><a href="webappapis.html#event-loops"><span class="secno">6.1.4 </span>Event loops</a>
      <ul class="toc"><li><a href="webappapis.html#definitions-1"><span class="secno">6.1.4.1 </span>Definitions</a></li>
       <li><a href="webappapis.html#processing-model-3"><span class="secno">6.1.4.2 </span>Processing model</a></li>
       <li><a href="webappapis.html#generic-task-sources"><span class="secno">6.1.4.3 </span>Generic task sources</a></ul></li>
     <li><a href="webappapis.html#events"><span class="secno">6.1.5 </span>Events</a>
      <ul class="toc"><li><a href="webappapis.html#event-handler-attributes"><span class="secno">6.1.5.1 </span>Event handlers</a></li>
       <li><a href="webappapis.html#event-handlers-on-elements,-document-objects,-and-window-objects"><span class="secno">6.1.5.2 </span>Event handlers on elements, <code>Document</code> objects, and <code>Window</code> objects</a>
        <ul class="toc"><li><a href="webappapis.html#idl-definitions"><span class="secno">6.1.5.2.1 </span>IDL definitions</a></ul></li>
       <li><a href="webappapis.html#event-firing"><span class="secno">6.1.5.3 </span>Event firing</a></li>
       <li><a href="webappapis.html#events-and-the-window-object"><span class="secno">6.1.5.4 </span>Events and the <code>Window</code> object</a></ul></ul></li>
   <li><a href="webappapis.html#atob"><span class="secno">6.2 </span>Base64 utility methods</a></li>
   <li><a href="webappapis.html#dynamic-markup-insertion"><span class="secno">6.3 </span>Dynamic markup insertion</a>
    <ul class="toc"><li><a href="webappapis.html#opening-the-input-stream"><span class="secno">6.3.1 </span>Opening the input stream</a></li>
     <li><a href="webappapis.html#closing-the-input-stream"><span class="secno">6.3.2 </span>Closing the input stream</a></li>
     <li><a href="webappapis.html#document.write()"><span class="secno">6.3.3 </span><code data-anolis-xref="dom-document-write">document.write()</code></a></li>
     <li><a href="webappapis.html#document.writeln()"><span class="secno">6.3.4 </span><code data-anolis-xref="dom-document-writeln">document.writeln()</code></a></ul></li>
   <li><a href="webappapis.html#timers"><span class="secno">6.4 </span>Timers</a></li>
   <li><a href="webappapis.html#user-prompts"><span class="secno">6.5 </span>User prompts</a>
    <ul class="toc"><li><a href="webappapis.html#simple-dialogs"><span class="secno">6.5.1 </span>Simple dialogs</a></li>
     <li><a href="webappapis.html#printing"><span class="secno">6.5.2 </span>Printing</a></ul></li>
   <li><a href="webappapis.html#system-state-and-capabilities"><span class="secno">6.6 </span>System state and capabilities</a>
    <ul class="toc"><li><a href="webappapis.html#the-navigator-object"><span class="secno">6.6.1 </span>The <code>Navigator</code> object</a>
      <ul class="toc"><li><a href="webappapis.html#client-identification"><span class="secno">6.6.1.1 </span>Client identification</a></li>
       <li><a href="webappapis.html#language-preferences"><span class="secno">6.6.1.2 </span>Language preferences</a></li>
       <li><a href="webappapis.html#custom-handlers"><span class="secno">6.6.1.3 </span>Custom scheme and content handlers</a>
        <ul class="toc"><li><a href="webappapis.html#security-and-privacy"><span class="secno">6.6.1.3.1 </span>Security and privacy</a></li>
         <li><a href="webappapis.html#sample-handler-impl"><span class="secno">6.6.1.3.2 </span>Sample user interface</a></ul></li>
       <li><a href="webappapis.html#manually-releasing-the-storage-mutex"><span class="secno">6.6.1.4 </span>Manually releasing the storage mutex</a></li>
       <li><a href="webappapis.html#plugins-0"><span class="secno">6.6.1.5 </span>Plugins</a></ul></li>
     <li><a href="webappapis.html#the-external-interface"><span class="secno">6.6.2 </span>The <code>External</code> interface</a></ul></ul></li>
 <li><a href="editing.html#editing"><span class="secno">7 </span>User interaction</a>
  <ul class="toc"><li><a href="editing.html#the-hidden-attribute"><span class="secno">7.1 </span>The <code>hidden</code> attribute</a></li>
   <li><a href="editing.html#inert-subtrees"><span class="secno">7.2 </span>Inert subtrees</a></li>
   <li><a href="editing.html#activation"><span class="secno">7.3 </span>Activation</a></li>
   <li><a href="editing.html#focus"><span class="secno">7.4 </span>Focus</a>
    <ul class="toc"><li><a href="editing.html#sequential-focus-navigation-and-the-tabindex-attribute"><span class="secno">7.4.1 </span>Sequential focus navigation and the <code data-anolis-xref="attr-tabindex">tabindex</code> attribute</a></li>
     <li><a href="editing.html#focus-management"><span class="secno">7.4.2 </span>Focus management</a></li>
     <li><a href="editing.html#document-level-focus-apis"><span class="secno">7.4.3 </span>Document-level focus APIs</a></li>
     <li><a href="editing.html#element-level-focus-apis"><span class="secno">7.4.4 </span>Element-level focus APIs</a></ul></li>
   <li><a href="editing.html#assigning-keyboard-shortcuts"><span class="secno">7.5 </span>Assigning keyboard shortcuts</a>
    <ul class="toc"><li><a href="editing.html#introduction-5"><span class="secno">7.5.1 </span>Introduction</a></li>
     <li><a href="editing.html#the-accesskey-attribute"><span class="secno">7.5.2 </span>The <code>accesskey</code> attribute</a></li>
     <li><a href="editing.html#processing-model-4"><span class="secno">7.5.3 </span>Processing model</a></ul></li>
   <li><a href="editing.html#editing-0"><span class="secno">7.6 </span>Editing</a>
    <ul class="toc"><li><a href="editing.html#contenteditable"><span class="secno">7.6.1 </span>Making document regions editable: The <code data-anolis-xref="attr-contenteditable">contenteditable</code> content attribute</a></li>
     <li><a href="editing.html#making-entire-documents-editable:-the-designmode-idl-attribute"><span class="secno">7.6.2 </span>Making entire documents editable: The <code data-anolis-xref="dom-document-designMode">designMode</code> IDL attribute</a></li>
     <li><a href="editing.html#best-practices-for-in-page-editors"><span class="secno">7.6.3 </span>Best practices for in-page editors</a></li>
     <li><a href="editing.html#editing-apis"><span class="secno">7.6.4 </span>Editing APIs</a></li>
     <li><a href="editing.html#spelling-and-grammar-checking"><span class="secno">7.6.5 </span>Spelling and grammar checking</a></ul></ul></li>
 <li><a href="syntax.html#syntax"><span class="secno">8 </span>The HTML syntax</a>
  <ul class="toc"><li><a href="syntax.html#writing"><span class="secno">8.1 </span>Writing HTML documents</a>
    <ul class="toc"><li><a href="syntax.html#the-doctype"><span class="secno">8.1.1 </span>The DOCTYPE</a></li>
     <li><a href="syntax.html#elements-0"><span class="secno">8.1.2 </span>Elements</a>
      <ul class="toc"><li><a href="syntax.html#start-tags"><span class="secno">8.1.2.1 </span>Start tags</a></li>
       <li><a href="syntax.html#end-tags"><span class="secno">8.1.2.2 </span>End tags</a></li>
       <li><a href="syntax.html#attributes-0"><span class="secno">8.1.2.3 </span>Attributes</a></li>
       <li><a href="syntax.html#optional-tags"><span class="secno">8.1.2.4 </span>Optional tags</a></li>
       <li><a href="syntax.html#element-restrictions"><span class="secno">8.1.2.5 </span>Restrictions on content models</a></li>
       <li><a href="syntax.html#cdata-rcdata-restrictions"><span class="secno">8.1.2.6 </span>Restrictions on the contents of raw text and escapable raw text elements</a></ul></li>
     <li><a href="syntax.html#text"><span class="secno">8.1.3 </span>Text</a>
      <ul class="toc"><li><a href="syntax.html#newlines"><span class="secno">8.1.3.1 </span>Newlines</a></ul></li>
     <li><a href="syntax.html#character-references"><span class="secno">8.1.4 </span>Character references</a></li>
     <li><a href="syntax.html#cdata-sections"><span class="secno">8.1.5 </span>CDATA sections</a></li>
     <li><a href="syntax.html#comments"><span class="secno">8.1.6 </span>Comments</a></ul></li>
   <li><a href="syntax.html#parsing"><span class="secno">8.2 </span>Parsing HTML documents</a>
    <ul class="toc"><li><a href="syntax.html#overview-of-the-parsing-model"><span class="secno">8.2.1 </span>Overview of the parsing model</a></li>
     <li><a href="syntax.html#the-input-byte-stream"><span class="secno">8.2.2 </span>The input byte stream</a>
      <ul class="toc"><li><a href="syntax.html#parsing-with-a-known-character-encoding"><span class="secno">8.2.2.1 </span>Parsing with a known character encoding</a></li>
       <li><a href="syntax.html#determining-the-character-encoding"><span class="secno">8.2.2.2 </span>Determining the character encoding</a></li>
       <li><a href="syntax.html#character-encodings"><span class="secno">8.2.2.3 </span>Character encodings</a></li>
       <li><a href="syntax.html#changing-the-encoding-while-parsing"><span class="secno">8.2.2.4 </span>Changing the encoding while parsing</a></li>
       <li><a href="syntax.html#preprocessing-the-input-stream"><span class="secno">8.2.2.5 </span>Preprocessing the input stream</a></ul></li>
     <li><a href="syntax.html#parse-state"><span class="secno">8.2.3 </span>Parse state</a>
      <ul class="toc"><li><a href="syntax.html#the-insertion-mode"><span class="secno">8.2.3.1 </span>The insertion mode</a></li>
       <li><a href="syntax.html#the-stack-of-open-elements"><span class="secno">8.2.3.2 </span>The stack of open elements</a></li>
       <li><a href="syntax.html#the-list-of-active-formatting-elements"><span class="secno">8.2.3.3 </span>The list of active formatting elements</a></li>
       <li><a href="syntax.html#the-element-pointers"><span class="secno">8.2.3.4 </span>The element pointers</a></li>
       <li><a href="syntax.html#other-parsing-state-flags"><span class="secno">8.2.3.5 </span>Other parsing state flags</a></ul></li>
     <li><a href="syntax.html#tokenization"><span class="secno">8.2.4 </span>Tokenization</a>
      <ul class="toc"><li><a href="syntax.html#data-state"><span class="secno">8.2.4.1 </span>Data state</a></li>
       <li><a href="syntax.html#character-reference-in-data-state"><span class="secno">8.2.4.2 </span>Character reference in data state</a></li>
       <li><a href="syntax.html#rcdata-state"><span class="secno">8.2.4.3 </span>RCDATA state</a></li>
       <li><a href="syntax.html#character-reference-in-rcdata-state"><span class="secno">8.2.4.4 </span>Character reference in RCDATA state</a></li>
       <li><a href="syntax.html#rawtext-state"><span class="secno">8.2.4.5 </span>RAWTEXT state</a></li>
       <li><a href="syntax.html#script-data-state"><span class="secno">8.2.4.6 </span>Script data state</a></li>
       <li><a href="syntax.html#plaintext-state"><span class="secno">8.2.4.7 </span>PLAINTEXT state</a></li>
       <li><a href="syntax.html#tag-open-state"><span class="secno">8.2.4.8 </span>Tag open state</a></li>
       <li><a href="syntax.html#end-tag-open-state"><span class="secno">8.2.4.9 </span>End tag open state</a></li>
       <li><a href="syntax.html#tag-name-state"><span class="secno">8.2.4.10 </span>Tag name state</a></li>
       <li><a href="syntax.html#rcdata-less-than-sign-state"><span class="secno">8.2.4.11 </span>RCDATA less-than sign state</a></li>
       <li><a href="syntax.html#rcdata-end-tag-open-state"><span class="secno">8.2.4.12 </span>RCDATA end tag open state</a></li>
       <li><a href="syntax.html#rcdata-end-tag-name-state"><span class="secno">8.2.4.13 </span>RCDATA end tag name state</a></li>
       <li><a href="syntax.html#rawtext-less-than-sign-state"><span class="secno">8.2.4.14 </span>RAWTEXT less-than sign state</a></li>
       <li><a href="syntax.html#rawtext-end-tag-open-state"><span class="secno">8.2.4.15 </span>RAWTEXT end tag open state</a></li>
       <li><a href="syntax.html#rawtext-end-tag-name-state"><span class="secno">8.2.4.16 </span>RAWTEXT end tag name state</a></li>
       <li><a href="syntax.html#script-data-less-than-sign-state"><span class="secno">8.2.4.17 </span>Script data less-than sign state</a></li>
       <li><a href="syntax.html#script-data-end-tag-open-state"><span class="secno">8.2.4.18 </span>Script data end tag open state</a></li>
       <li><a href="syntax.html#script-data-end-tag-name-state"><span class="secno">8.2.4.19 </span>Script data end tag name state</a></li>
       <li><a href="syntax.html#script-data-escape-start-state"><span class="secno">8.2.4.20 </span>Script data escape start state</a></li>
       <li><a href="syntax.html#script-data-escape-start-dash-state"><span class="secno">8.2.4.21 </span>Script data escape start dash state</a></li>
       <li><a href="syntax.html#script-data-escaped-state"><span class="secno">8.2.4.22 </span>Script data escaped state</a></li>
       <li><a href="syntax.html#script-data-escaped-dash-state"><span class="secno">8.2.4.23 </span>Script data escaped dash state</a></li>
       <li><a href="syntax.html#script-data-escaped-dash-dash-state"><span class="secno">8.2.4.24 </span>Script data escaped dash dash state</a></li>
       <li><a href="syntax.html#script-data-escaped-less-than-sign-state"><span class="secno">8.2.4.25 </span>Script data escaped less-than sign state</a></li>
       <li><a href="syntax.html#script-data-escaped-end-tag-open-state"><span class="secno">8.2.4.26 </span>Script data escaped end tag open state</a></li>
       <li><a href="syntax.html#script-data-escaped-end-tag-name-state"><span class="secno">8.2.4.27 </span>Script data escaped end tag name state</a></li>
       <li><a href="syntax.html#script-data-double-escape-start-state"><span class="secno">8.2.4.28 </span>Script data double escape start state</a></li>
       <li><a href="syntax.html#script-data-double-escaped-state"><span class="secno">8.2.4.29 </span>Script data double escaped state</a></li>
       <li><a href="syntax.html#script-data-double-escaped-dash-state"><span class="secno">8.2.4.30 </span>Script data double escaped dash state</a></li>
       <li><a href="syntax.html#script-data-double-escaped-dash-dash-state"><span class="secno">8.2.4.31 </span>Script data double escaped dash dash state</a></li>
       <li><a href="syntax.html#script-data-double-escaped-less-than-sign-state"><span class="secno">8.2.4.32 </span>Script data double escaped less-than sign state</a></li>
       <li><a href="syntax.html#script-data-double-escape-end-state"><span class="secno">8.2.4.33 </span>Script data double escape end state</a></li>
       <li><a href="syntax.html#before-attribute-name-state"><span class="secno">8.2.4.34 </span>Before attribute name state</a></li>
       <li><a href="syntax.html#attribute-name-state"><span class="secno">8.2.4.35 </span>Attribute name state</a></li>
       <li><a href="syntax.html#after-attribute-name-state"><span class="secno">8.2.4.36 </span>After attribute name state</a></li>
       <li><a href="syntax.html#before-attribute-value-state"><span class="secno">8.2.4.37 </span>Before attribute value state</a></li>
       <li><a href="syntax.html#attribute-value-(double-quoted)-state"><span class="secno">8.2.4.38 </span>Attribute value (double-quoted) state</a></li>
       <li><a href="syntax.html#attribute-value-(single-quoted)-state"><span class="secno">8.2.4.39 </span>Attribute value (single-quoted) state</a></li>
       <li><a href="syntax.html#attribute-value-(unquoted)-state"><span class="secno">8.2.4.40 </span>Attribute value (unquoted) state</a></li>
       <li><a href="syntax.html#character-reference-in-attribute-value-state"><span class="secno">8.2.4.41 </span>Character reference in attribute value state</a></li>
       <li><a href="syntax.html#after-attribute-value-(quoted)-state"><span class="secno">8.2.4.42 </span>After attribute value (quoted) state</a></li>
       <li><a href="syntax.html#self-closing-start-tag-state"><span class="secno">8.2.4.43 </span>Self-closing start tag state</a></li>
       <li><a href="syntax.html#bogus-comment-state"><span class="secno">8.2.4.44 </span>Bogus comment state</a></li>
       <li><a href="syntax.html#markup-declaration-open-state"><span class="secno">8.2.4.45 </span>Markup declaration open state</a></li>
       <li><a href="syntax.html#comment-start-state"><span class="secno">8.2.4.46 </span>Comment start state</a></li>
       <li><a href="syntax.html#comment-start-dash-state"><span class="secno">8.2.4.47 </span>Comment start dash state</a></li>
       <li><a href="syntax.html#comment-state"><span class="secno">8.2.4.48 </span>Comment state</a></li>
       <li><a href="syntax.html#comment-end-dash-state"><span class="secno">8.2.4.49 </span>Comment end dash state</a></li>
       <li><a href="syntax.html#comment-end-state"><span class="secno">8.2.4.50 </span>Comment end state</a></li>
       <li><a href="syntax.html#comment-end-bang-state"><span class="secno">8.2.4.51 </span>Comment end bang state</a></li>
       <li><a href="syntax.html#doctype-state"><span class="secno">8.2.4.52 </span>DOCTYPE state</a></li>
       <li><a href="syntax.html#before-doctype-name-state"><span class="secno">8.2.4.53 </span>Before DOCTYPE name state</a></li>
       <li><a href="syntax.html#doctype-name-state"><span class="secno">8.2.4.54 </span>DOCTYPE name state</a></li>
       <li><a href="syntax.html#after-doctype-name-state"><span class="secno">8.2.4.55 </span>After DOCTYPE name state</a></li>
       <li><a href="syntax.html#after-doctype-public-keyword-state"><span class="secno">8.2.4.56 </span>After DOCTYPE public keyword state</a></li>
       <li><a href="syntax.html#before-doctype-public-identifier-state"><span class="secno">8.2.4.57 </span>Before DOCTYPE public identifier state</a></li>
       <li><a href="syntax.html#doctype-public-identifier-(double-quoted)-state"><span class="secno">8.2.4.58 </span>DOCTYPE public identifier (double-quoted) state</a></li>
       <li><a href="syntax.html#doctype-public-identifier-(single-quoted)-state"><span class="secno">8.2.4.59 </span>DOCTYPE public identifier (single-quoted) state</a></li>
       <li><a href="syntax.html#after-doctype-public-identifier-state"><span class="secno">8.2.4.60 </span>After DOCTYPE public identifier state</a></li>
       <li><a href="syntax.html#between-doctype-public-and-system-identifiers-state"><span class="secno">8.2.4.61 </span>Between DOCTYPE public and system identifiers state</a></li>
       <li><a href="syntax.html#after-doctype-system-keyword-state"><span class="secno">8.2.4.62 </span>After DOCTYPE system keyword state</a></li>
       <li><a href="syntax.html#before-doctype-system-identifier-state"><span class="secno">8.2.4.63 </span>Before DOCTYPE system identifier state</a></li>
       <li><a href="syntax.html#doctype-system-identifier-(double-quoted)-state"><span class="secno">8.2.4.64 </span>DOCTYPE system identifier (double-quoted) state</a></li>
       <li><a href="syntax.html#doctype-system-identifier-(single-quoted)-state"><span class="secno">8.2.4.65 </span>DOCTYPE system identifier (single-quoted) state</a></li>
       <li><a href="syntax.html#after-doctype-system-identifier-state"><span class="secno">8.2.4.66 </span>After DOCTYPE system identifier state</a></li>
       <li><a href="syntax.html#bogus-doctype-state"><span class="secno">8.2.4.67 </span>Bogus DOCTYPE state</a></li>
       <li><a href="syntax.html#cdata-section-state"><span class="secno">8.2.4.68 </span>CDATA section state</a></li>
       <li><a href="syntax.html#tokenizing-character-references"><span class="secno">8.2.4.69 </span>Tokenizing character references</a></ul></li>
     <li><a href="syntax.html#tree-construction"><span class="secno">8.2.5 </span>Tree construction</a>
      <ul class="toc"><li><a href="syntax.html#creating-and-inserting-nodes"><span class="secno">8.2.5.1 </span>Creating and inserting nodes</a></li>
       <li><a href="syntax.html#parsing-elements-that-contain-only-text"><span class="secno">8.2.5.2 </span>Parsing elements that contain only text</a></li>
       <li><a href="syntax.html#closing-elements-that-have-implied-end-tags"><span class="secno">8.2.5.3 </span>Closing elements that have implied end tags</a></li>
       <li><a href="syntax.html#parsing-main-inhtml"><span class="secno">8.2.5.4 </span>The rules for parsing tokens in HTML content</a>
        <ul class="toc"><li><a href="syntax.html#the-initial-insertion-mode"><span class="secno">8.2.5.4.1 </span>The "initial" insertion mode</a></li>
         <li><a href="syntax.html#the-before-html-insertion-mode"><span class="secno">8.2.5.4.2 </span>The "before html" insertion mode</a></li>
         <li><a href="syntax.html#the-before-head-insertion-mode"><span class="secno">8.2.5.4.3 </span>The "before head" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-inhead"><span class="secno">8.2.5.4.4 </span>The "in head" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-inheadnoscript"><span class="secno">8.2.5.4.5 </span>The "in head noscript" insertion mode</a></li>
         <li><a href="syntax.html#the-after-head-insertion-mode"><span class="secno">8.2.5.4.6 </span>The "after head" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-inbody"><span class="secno">8.2.5.4.7 </span>The "in body" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-incdata"><span class="secno">8.2.5.4.8 </span>The "text" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-intable"><span class="secno">8.2.5.4.9 </span>The "in table" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-intabletext"><span class="secno">8.2.5.4.10 </span>The "in table text" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-incaption"><span class="secno">8.2.5.4.11 </span>The "in caption" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-incolgroup"><span class="secno">8.2.5.4.12 </span>The "in column group" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-intbody"><span class="secno">8.2.5.4.13 </span>The "in table body" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-intr"><span class="secno">8.2.5.4.14 </span>The "in row" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-intd"><span class="secno">8.2.5.4.15 </span>The "in cell" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-inselect"><span class="secno">8.2.5.4.16 </span>The "in select" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-inselectintable"><span class="secno">8.2.5.4.17 </span>The "in select in table" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-intemplate"><span class="secno">8.2.5.4.18 </span>The "in template" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-afterbody"><span class="secno">8.2.5.4.19 </span>The "after body" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-inframeset"><span class="secno">8.2.5.4.20 </span>The "in frameset" insertion mode</a></li>
         <li><a href="syntax.html#parsing-main-afterframeset"><span class="secno">8.2.5.4.21 </span>The "after frameset" insertion mode</a></li>
         <li><a href="syntax.html#the-after-after-body-insertion-mode"><span class="secno">8.2.5.4.22 </span>The "after after body" insertion mode</a></li>
         <li><a href="syntax.html#the-after-after-frameset-insertion-mode"><span class="secno">8.2.5.4.23 </span>The "after after frameset" insertion mode</a></ul></li>
       <li><a href="syntax.html#parsing-main-inforeign"><span class="secno">8.2.5.5 </span>The rules for parsing tokens in foreign content</a></ul></li>
     <li><a href="syntax.html#the-end"><span class="secno">8.2.6 </span>The end</a></li>
     <li><a href="syntax.html#coercing-an-html-dom-into-an-infoset"><span class="secno">8.2.7 </span>Coercing an HTML DOM into an infoset</a></li>
     <li><a href="syntax.html#an-introduction-to-error-handling-and-strange-cases-in-the-parser"><span class="secno">8.2.8 </span>An introduction to error handling and strange cases in the parser</a>
      <ul class="toc"><li><a href="syntax.html#misnested-tags:-b-i-/b-/i"><span class="secno">8.2.8.1 </span>Misnested tags: &lt;b&gt;&lt;i&gt;&lt;/b&gt;&lt;/i&gt;</a></li>
       <li><a href="syntax.html#misnested-tags:-b-p-/b-/p"><span class="secno">8.2.8.2 </span>Misnested tags: &lt;b&gt;&lt;p&gt;&lt;/b&gt;&lt;/p&gt;</a></li>
       <li><a href="syntax.html#unexpected-markup-in-tables"><span class="secno">8.2.8.3 </span>Unexpected markup in tables</a></li>
       <li><a href="syntax.html#scripts-that-modify-the-page-as-it-is-being-parsed"><span class="secno">8.2.8.4 </span>Scripts that modify the page as it is being parsed</a></li>
       <li><a href="syntax.html#the-execution-of-scripts-that-are-moving-across-multiple-documents"><span class="secno">8.2.8.5 </span>The execution of scripts that are moving across multiple documents</a></li>
       <li><a href="syntax.html#unclosed-formatting-elements"><span class="secno">8.2.8.6 </span>Unclosed formatting elements</a></ul></ul></li>
   <li><a href="syntax.html#serializing-html-fragments"><span class="secno">8.3 </span>Serializing HTML fragments</a></li>
   <li><a href="syntax.html#parsing-html-fragments"><span class="secno">8.4 </span>Parsing HTML fragments</a></li>
   <li><a href="syntax.html#named-character-references"><span class="secno">8.5 </span>Named character references</a></ul></li>
 <li><a href="the-xhtml-syntax.html#the-xhtml-syntax"><span class="secno">9 </span>The XHTML syntax</a>
  <ul class="toc"><li><a href="the-xhtml-syntax.html#writing-xhtml-documents"><span class="secno">9.1 </span>Writing XHTML documents</a></li>
   <li><a href="the-xhtml-syntax.html#parsing-xhtml-documents"><span class="secno">9.2 </span>Parsing XHTML documents</a></li>
   <li><a href="the-xhtml-syntax.html#serializing-xhtml-fragments"><span class="secno">9.3 </span>Serializing XHTML fragments</a></li>
   <li><a href="the-xhtml-syntax.html#parsing-xhtml-fragments"><span class="secno">9.4 </span>Parsing XHTML fragments</a></ul></li>
 <li><a href="rendering.html#rendering"><span class="secno">10 </span>Rendering</a>
  <ul class="toc"><li><a href="rendering.html#introduction-6"><span class="secno">10.1 </span>Introduction</a></li>
   <li><a href="rendering.html#the-css-user-agent-style-sheet-and-presentational-hints"><span class="secno">10.2 </span>The CSS user agent style sheet and presentational hints</a></li>
   <li><a href="rendering.html#non-replaced-elements"><span class="secno">10.3 </span>Non-replaced elements</a>
    <ul class="toc"><li><a href="rendering.html#hidden-elements"><span class="secno">10.3.1 </span>Hidden elements</a></li>
     <li><a href="rendering.html#the-page"><span class="secno">10.3.2 </span>The page</a></li>
     <li><a href="rendering.html#flow-content-0"><span class="secno">10.3.3 </span>Flow content</a></li>
     <li><a href="rendering.html#phrasing-content-0"><span class="secno">10.3.4 </span>Phrasing content</a></li>
     <li><a href="rendering.html#bidi-rendering"><span class="secno">10.3.5 </span>Bidirectional text</a></li>
     <li><a href="rendering.html#quotes"><span class="secno">10.3.6 </span>Quotes</a></li>
     <li><a href="rendering.html#sections-and-headings"><span class="secno">10.3.7 </span>Sections and headings</a></li>
     <li><a href="rendering.html#lists"><span class="secno">10.3.8 </span>Lists</a></li>
     <li><a href="rendering.html#tables"><span class="secno">10.3.9 </span>Tables</a></li>
     <li><a href="rendering.html#margin-collapsing-quirks"><span class="secno">10.3.10 </span>Margin collapsing quirks</a></li>
     <li><a href="rendering.html#form-controls"><span class="secno">10.3.11 </span>Form controls</a></li>
     <li><a href="rendering.html#the-hr-element-0"><span class="secno">10.3.12 </span>The <code>hr</code> element</a></li>
     <li><a href="rendering.html#the-fieldset-and-legend-elements"><span class="secno">10.3.13 </span>The <code>fieldset</code> and <code>legend</code> elements</a></ul></li>
   <li><a href="rendering.html#replaced-elements"><span class="secno">10.4 </span>Replaced elements</a>
    <ul class="toc"><li><a href="rendering.html#embedded-content-1"><span class="secno">10.4.1 </span>Embedded content</a></li>
     <li><a href="rendering.html#images"><span class="secno">10.4.2 </span>Images</a></li>
     <li><a href="rendering.html#attributes-for-embedded-content-and-images"><span class="secno">10.4.3 </span>Attributes for embedded content and images</a></li>
     <li><a href="rendering.html#image-maps-1"><span class="secno">10.4.4 </span>Image maps</a></ul></li>
   <li><a href="rendering.html#bindings"><span class="secno">10.5 </span>Bindings</a>
    <ul class="toc"><li><a href="rendering.html#introduction-7"><span class="secno">10.5.1 </span>Introduction</a></li>
     <li><a href="rendering.html#the-button-element-0"><span class="secno">10.5.2 </span>The <code>button</code> element</a></li>
     <li><a href="rendering.html#the-input-element-as-a-text-entry-widget"><span class="secno">10.5.3 </span>The <code>input</code> element as a text entry widget</a></li>
     <li><a href="rendering.html#the-input-element-as-domain-specific-widgets"><span class="secno">10.5.4 </span>The <code>input</code> element as domain-specific widgets</a></li>
     <li><a href="rendering.html#the-input-element-as-a-range-control"><span class="secno">10.5.5 </span>The <code>input</code> element as a range control</a></li>
     <li><a href="rendering.html#the-input-element-as-a-color-well"><span class="secno">10.5.6 </span>The <code>input</code> element as a color well</a></li>
     <li><a href="rendering.html#the-input-element-as-a-checkbox-and-radio-button-widgets"><span class="secno">10.5.7 </span>The <code>input</code> element as a checkbox and radio button widgets</a></li>
     <li><a href="rendering.html#the-input-element-as-a-file-upload-control"><span class="secno">10.5.8 </span>The <code>input</code> element as a file upload control</a></li>
     <li><a href="rendering.html#the-input-element-as-a-button"><span class="secno">10.5.9 </span>The <code>input</code> element as a button</a></li>
     <li><a href="rendering.html#the-marquee-element"><span class="secno">10.5.10 </span>The <code>marquee</code> element</a></li>
     <li><a href="rendering.html#the-meter-element-0"><span class="secno">10.5.11 </span>The <code>meter</code> element</a></li>
     <li><a href="rendering.html#the-progress-element-0"><span class="secno">10.5.12 </span>The <code>progress</code> element</a></li>
     <li><a href="rendering.html#the-select-element-0"><span class="secno">10.5.13 </span>The <code>select</code> element</a></li>
     <li><a href="rendering.html#the-textarea-element-0"><span class="secno">10.5.14 </span>The <code>textarea</code> element</a></li>
     <li><a href="rendering.html#the-keygen-element-0"><span class="secno">10.5.15 </span>The <code>keygen</code> element</a></ul></li>
   <li><a href="rendering.html#frames-and-framesets"><span class="secno">10.6 </span>Frames and framesets</a></li>
   <li><a href="rendering.html#interactive-media"><span class="secno">10.7 </span>Interactive media</a>
    <ul class="toc"><li><a href="rendering.html#links,-forms,-and-navigation"><span class="secno">10.7.1 </span>Links, forms, and navigation</a></li>
     <li><a href="rendering.html#the-title-attribute-0"><span class="secno">10.7.2 </span>The <code data-anolis-xref="attr-title">title</code> attribute</a></li>
     <li><a href="rendering.html#editing-hosts"><span class="secno">10.7.3 </span>Editing hosts</a></li>
     <li><a href="rendering.html#text-rendered-in-native-user-interfaces"><span class="secno">10.7.4 </span>Text rendered in native user interfaces</a></ul></li>
   <li><a href="rendering.html#print-media"><span class="secno">10.8 </span>Print media</a></li>
   <li><a href="rendering.html#unstyled-xml-documents"><span class="secno">10.9 </span>Unstyled XML documents</a></ul></li>
 <li><a href="obsolete.html#obsolete"><span class="secno">11 </span>Obsolete features</a>
  <ul class="toc"><li><a href="obsolete.html#obsolete-but-conforming-features"><span class="secno">11.1 </span>Obsolete but conforming features</a>
    <ul class="toc"><li><a href="obsolete.html#warnings-for-obsolete-but-conforming-features"><span class="secno">11.1.1 </span>Warnings for obsolete but conforming features</a></ul></li>
   <li><a href="obsolete.html#non-conforming-features"><span class="secno">11.2 </span>Non-conforming features</a></li>
   <li><a href="obsolete.html#requirements-for-implementations"><span class="secno">11.3 </span>Requirements for implementations</a>
    <ul class="toc"><li><a href="obsolete.html#the-applet-element"><span class="secno">11.3.1 </span>The <code>applet</code> element</a></li>
     <li><a href="obsolete.html#the-marquee-element-0"><span class="secno">11.3.2 </span>The <code>marquee</code> element</a></li>
     <li><a href="obsolete.html#frames"><span class="secno">11.3.3 </span>Frames</a></li>
     <li><a href="obsolete.html#other-elements,-attributes-and-apis"><span class="secno">11.3.4 </span>Other elements, attributes and APIs</a></ul></ul></li>
 <li><a href="iana.html#iana"><span class="secno">12 </span>IANA considerations</a>
  <ul class="toc"><li><a href="iana.html#text/html"><span class="secno">12.1 </span><code>text/html</code></a></li>
   <li><a href="iana.html#multipart/x-mixed-replace"><span class="secno">12.2 </span><code>multipart/x-mixed-replace</code></a></li>
   <li><a href="iana.html#application/xhtml+xml"><span class="secno">12.3 </span><code>application/xhtml+xml</code></a></li>
   <li><a href="iana.html#application/x-www-form-urlencoded"><span class="secno">12.4 </span><code>application/x-www-form-urlencoded</code></a></li>
   <li><a href="iana.html#text/cache-manifest"><span class="secno">12.5 </span><code>text/cache-manifest</code></a></li>
   <li><a href="iana.html#web+-scheme-prefix"><span class="secno">12.6 </span><code>web+</code> scheme prefix</a></ul></li>
 <li><a class="no-num" href="index.html#index">Index</a>
  <ul class="toc"><li><a class="no-num" href="index.html#elements-1">Elements</a></li>
   <li><a class="no-num" href="index.html#element-content-categories">Element content categories</a></li>
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 <li><a class="no-num" href="references.html#references">References</a></li>
 <li><a class="no-num" href="acknowledgments.html#acknowledgments">Acknowledgments</a></ul><!--end-toc-->