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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html lang="en-US-x-Hixie"><head><title>HTML 5</title><style type="text/css">
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<link href="http://www.w3.org/StyleSheets/TR/W3C-WD" rel="stylesheet"  type="text/css">
<!-- ZZZ ED vs WD --></head><body><div class="head">
   <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>HTML 5</h1>
   <h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2>
   <h2 class="no-num no-toc" id="w3c-working-draft-12-february-year"><!--ZZZ:--> W3C Working Draft 12 February 2009<!-- fix date ZZZ --><!-- Editor's Draft 12 February 2009 --><!--:ZZZ--></h2>
   <dl><!-- ZZZ: update the month/day (twice), uncomment out --><dt>This Version:</dt>
    <dd><a href="http://www.w3.org/TR/2009/WD-html5-20090212/">http://www.w3.org/TR/2009/WD-html5-20090212/</a></dd>
<!-- :ZZZ -->
    <dt>Latest Published Version:</dt>
    <dd><a href="http://www.w3.org/TR/html5/">http://www.w3.org/TR/html5/</a></dd>
    <dt>Latest Editor's Draft:</dt>
    <dd><a href="http://www.w3.org/html/wg/html5/">http://www.w3.org/html/wg/html5/</a></dd>
<!-- ZZZ: add the new version after it has shipped -->
    <dt>Previous Versions:</dt>
    <dd><a href="http://www.w3.org/TR/2008/WD-html5-20080610/">http://www.w3.org/TR/2008/WD-html5-20080610/</a>
    <dd><a href="http://www.w3.org/TR/2008/WD-html5-20080122/">http://www.w3.org/TR/2008/WD-html5-20080122/</a>
<!-- :ZZZ -->
    </dd><dt>Editors:</dt>
    <dd><a href="mailto:ian@hixie.ch">Ian Hickson</a>, Google, Inc.</dd>
    <dd>David Hyatt, Apple, Inc.</dd>
   </dl>

   <p>The content of this document is also available as a <a href="single-page/">single HTML file</a>.</p>
   
   <p class="copyright"><a href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a>
   &#169; 2009 <a href="http://www.w3.org/"><abbr title="World Wide
   Web Consortium">W3C</abbr></a><sup>&#174;</sup> (<a href="http://www.csail.mit.edu/"><abbr title="Massachusetts
   Institute of Technology">MIT</abbr></a>, <a href="http://www.ercim.org/"><abbr title="European Research
   Consortium for Informatics and Mathematics">ERCIM</abbr></a>, <a href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. W3C
   <a href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a>,
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   and <a href="http://www.w3.org/Consortium/Legal/copyright-documents">document
   use</a> rules apply.</p>
  </div><hr><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><!-- intro boilerplate (required) --><p><em>This section describes the status of this document at the
  time of its publication. Other documents may supersede this
  document. A list of current W3C publications and the most recently
  formally published revision of this technical report can be found in
  the <a href="http://www.w3.org/TR/">W3C technical reports index</a>
  at http://www.w3.org/TR/.</em></p><!-- UNDER NO CIRCUMSTANCES IS THE FOLLOWING PARAGRAPH TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><!-- XXX this section will be moved back to just below the copyright
  notice in the header by October 2009 unless the spec as a whole has
  been transitioned to a more permissive license by that time. --><!-- XXX when moving this text, add: class="alt copyright" --><p>The <a href="http://www.whatwg.org/specs/web-apps/current-work/">WHATWG
  version</a> of this specification is available under a license that
  permits reuse of the specification text.</p><!-- UNDER NO CIRCUMSTANCES IS THE PRECEDING PARAGRAPH TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><!-- where to send feedback (required) --><p>If you wish to make comments regarding this document, please send
  them to <a href="mailto:public-html-comments@w3.org">public-html-comments@w3.org</a>
  (<a href="mailto:public-html-comments-request@w3.org?subject=subscribe">subscribe</a>,
  <a href="http://lists.w3.org/Archives/Public/public-html-comments/">archives</a>)

  <!-- UNDER NO CIRCUMSTANCES IS THE FOLLOWING SENTENCE TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST -->  
  or <a href="mailto:whatwg@whatwg.org">whatwg@whatwg.org</a> (<a href="http://lists.whatwg.org/listinfo.cgi/whatwg-whatwg.org">subscribe</a>,
  <a href="http://lists.whatwg.org/pipermail/whatwg-whatwg.org/">archives</a>),
  <!-- UNDER NO CIRCUMSTANCES IS THE PRECEDING SENTENCE TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST -->

  or submit them using <a href="http://www.w3.org/Bugs/Public/enter_bug.cgi?product=HTML%20WG">our
  public bug database</a>.

  All feedback is welcome.</p><!-- UNDER NO CIRCUMSTANCES IS THE FOLLOWING PARAGRAPH TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><p>We maintain <a href="http://www.whatwg.org/issues/">a list of all
  e-mails that have not yet been considered</a> and <a href="http://www.w3.org/Bugs/Public/buglist.cgi?component=Spec%20bugs&amp;component=Spec%20proposals&amp;product=HTML%20WG&amp;resolution=NEEDSINFO&amp;resolution=LATER&amp;resolution=REMIND&amp;resolution=---&amp;order=bugs.resolution%2Cbugs.priority%2C%20bugs.bug_severity">a
  list of all bug reports that have not yet been resolved</a>.</p><!-- UNDER NO CIRCUMSTANCES IS THE PRECEDING PARAGRAPH TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><!-- stability (required) --><p>Implementors should be aware that this specification is not
  stable. <strong>Implementors who are not taking part in the
  discussions are likely to find the specification changing out from
  under them in incompatible ways.</strong> Vendors interested in
  implementing this specification before it eventually reaches the
  Candidate Recommendation stage should join the aforementioned
  mailing lists and take part in the discussions.</p><!-- not everyone agrees with html5 (requested before fpwd) --><p>The publication of this document by the W3C as a W3C Working
  Draft does not imply that all of the participants in the W3C HTML
  working group endorse the contents of the specification. Indeed, for
  any section of the specification, one can usually find many members
  of the working group or of the W3C as a whole who object strongly to
  the current text, the existence of the section at all, or the idea
  that the working group should even spend time discussing the concept
  of that section.</p><!-- UNDER NO CIRCUMSTANCES IS THE FOLLOWING PARAGRAPH TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><!-- version history or list of changes (required) --><p>The latest stable version of the editor's draft of this
  specification is always available on <a href="http://dev.w3.org/html5/spec/Overview.html">the
  W3C CVS server</a> and in the <a href="http://svn.whatwg.org/webapps/">WHATWG Subversion
  repository</a>. The <a href="http://www.whatwg.org/specs/web-apps/current-work/">latest
  editor's working copy</a> (which may contain unfinished text in
  the process of being prepared) is also available.</p><!-- UNDER NO CIRCUMSTANCES IS THE PRECEDING PARAGRAPH TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><!-- UNDER NO CIRCUMSTANCES IS THE FOLLOWING LIST TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><p>There are various ways to follow the change history for the
  specification:</p><dl><dt>E-mail notifications of changes</dt>
   <dd>HTML-Diffs mailing list (diff-marked HTML versions for each change): <a href="http://lists.w3.org/Archives/Public/public-html-diffs/latest">http://lists.w3.org/Archives/Public/public-html-diffs/latest</a></dd>
   <dd>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></dd>
   <dt>Real-time notifications of changes:</dt>
   <dd>Generated diff-marked HTML versions for each change: <a href="http://twitter.com/HTML5">http://twitter.com/HTML5</a></dd>
   <dd>All (non-editorial) changes to the spec source: <a href="http://twitter.com/WHATWG">http://twitter.com/WHATWG</a></dd>
   <dt>Browsable version-control record of all changes:</dt>
   <dd>CVSWeb interface with side-by-side diffs: <a href="http://dev.w3.org/cvsweb/html5/spec/Overview.html">http://dev.w3.org/cvsweb/html5/spec/Overview.html</a></dd>
   <dd>Annotated summary with unified diffs: <a href="http://html5.org/tools/web-apps-tracker">http://html5.org/tools/web-apps-tracker</a></dd>
   <dd>Raw Subversion interface: <code>svn checkout http://svn.whatwg.org/webapps/</code></dd>
  </dl><!-- UNDER NO CIRCUMSTANCES IS THE PRECEDING LIST TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><!-- status of document, group responsible (required) --><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 along the W3C Recommendation
  track.
  <!--ZZZ:-->
  This specification is the 12 February 2009 Working Draft.
  <!-- This specification is the 12 February 2009 Editor's Draft. -->
  <!--:ZZZ-->
  </p><!-- UNDER NO CIRCUMSTANCES IS THE PRECEDING PARAGRAPH TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><!-- relationship to other work (required) --><p>This specification is also being produced by the <a href="http://www.whatwg.org/">WHATWG</a>. The two specifications are
  identical from the table of contents onwards.</p><!-- UNDER NO CIRCUMSTANCES IS THE FOLLOWING PARAGRAPH TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><!-- UNDER NO CIRCUMSTANCES IS THE PRECEDING PARAGRAPH TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><!-- context and rationale (required) --><p>This specification is intended to replace (be a new version of)
  what was previously the HTML4, XHTML 1.0, and DOM2 HTML
  specifications.</p><!-- UNDER NO CIRCUMSTANCES IS THE FOLLOWING PARAGRAPH TO BE REMOVED OR EDITED WITHOUT TALKING TO IAN FIRST --><!-- 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><h3 class="no-num no-toc" id="stability-0">Stability</h3><p>Different parts of this specification are at different levels of
  maturity.</p><div id="stability"></div><p class="XXX">Some of the more major known issues are marked
  like this. There are many other issues that have been raised as
  well; the issues given in this document are not the only known
  issues! Also, firing of events needs to be unified (right now some
  bubble, some don't, they all use different text to fire events,
  etc).</p><h2 class="no-num no-toc" id="contents">Table of contents</h2>
<!--begin-toc-->
<ol class="toc"><li><a href="introduction.html#introduction"><span class="secno">1 </span>Introduction</a>
  <ol><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#relationships-to-other-specifications"><span class="secno">1.5 </span>Relationships to other specifications</a>
    <ol><li><a href="introduction.html#relationship-to-html-4.01-and-dom2-html"><span class="secno">1.5.1 </span>Relationship to HTML 4.01 and DOM2 HTML</a></li>
     <li><a href="introduction.html#relationship-to-xhtml-1.x"><span class="secno">1.5.2 </span>Relationship to XHTML 1.x</a></li>
     <li><a href="introduction.html#relationship-to-xhtml2-and-xforms"><span class="secno">1.5.3 </span>Relationship to XHTML2 and XForms</a></li>
     <li><a href="introduction.html#relationship-to-flash-silverlight-xul-and-similar-proprietary-languages"><span class="secno">1.5.4 </span>Relationship to Flash, Silverlight, XUL <!-- alphabetical -->
  and similar proprietary languages</a></li></ol></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>
    <ol><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></li></ol></li></ol></li>
 <li><a href="infrastructure.html#infrastructure"><span class="secno">2 </span>Common infrastructure</a>
  <ol><li><a href="infrastructure.html#terminology"><span class="secno">2.1 </span>Terminology</a>
    <ol><li><a href="infrastructure.html#xml"><span class="secno">2.1.1 </span>XML</a></li>
     <li><a href="infrastructure.html#dom-trees"><span class="secno">2.1.2 </span>DOM trees</a></li>
     <li><a href="infrastructure.html#scripting-0"><span class="secno">2.1.3 </span>Scripting</a></li>
     <li><a href="infrastructure.html#plugins"><span class="secno">2.1.4 </span>Plugins</a></li>
     <li><a href="infrastructure.html#character-encodings"><span class="secno">2.1.5 </span>Character encodings</a></li></ol></li>
   <li><a href="infrastructure.html#conformance-requirements"><span class="secno">2.2 </span>Conformance requirements</a>
    <ol><li><a href="infrastructure.html#dependencies"><span class="secno">2.2.1 </span>Dependencies</a></li>
     <li><a href="infrastructure.html#features-defined-in-other-specifications"><span class="secno">2.2.2 </span>Features defined in other specifications</a></li>
     <li><a href="infrastructure.html#common-conformance-requirements-for-apis-exposed-to-javascript"><span class="secno">2.2.3 </span>Common conformance requirements for APIs exposed to
  JavaScript</a></li></ol></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>
    <ol><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#numbers"><span class="secno">2.4.3 </span>Numbers</a>
      <ol><li><a href="infrastructure.html#non-negative-integers"><span class="secno">2.4.3.1 </span>Non-negative integers</a></li>
       <li><a href="infrastructure.html#signed-integers"><span class="secno">2.4.3.2 </span>Signed integers</a></li>
       <li><a href="infrastructure.html#real-numbers"><span class="secno">2.4.3.3 </span>Real numbers</a></li>
       <li><a href="infrastructure.html#ratios"><span class="secno">2.4.3.4 </span>Ratios</a></li>
       <li><a href="infrastructure.html#percentages-and-dimensions"><span class="secno">2.4.3.5 </span>Percentages and lengths</a></li>
       <li><a href="infrastructure.html#lists-of-integers"><span class="secno">2.4.3.6 </span>Lists of integers</a></li>
       <li><a href="infrastructure.html#lists-of-dimensions"><span class="secno">2.4.3.7 </span>Lists of dimensions</a></li></ol></li>
     <li><a href="infrastructure.html#dates-and-times"><span class="secno">2.4.4 </span>Dates and times</a>
      <ol><li><a href="infrastructure.html#months"><span class="secno">2.4.4.1 </span>Months</a></li>
       <li><a href="infrastructure.html#dates"><span class="secno">2.4.4.2 </span>Dates</a></li>
       <li><a href="infrastructure.html#times"><span class="secno">2.4.4.3 </span>Times</a></li>
       <li><a href="infrastructure.html#local-dates-and-times"><span class="secno">2.4.4.4 </span>Local dates and times</a></li>
       <li><a href="infrastructure.html#global-dates-and-times"><span class="secno">2.4.4.5 </span>Global dates and times</a></li>
       <li><a href="infrastructure.html#weeks"><span class="secno">2.4.4.6 </span>Weeks</a></li>
       <li><a href="infrastructure.html#vaguer-moments-in-time"><span class="secno">2.4.4.7 </span>Vaguer moments in time</a></li></ol></li>
     <li><a href="infrastructure.html#colors"><span class="secno">2.4.5 </span>Colors</a></li>
     <li><a href="infrastructure.html#space-separated-tokens"><span class="secno">2.4.6 </span>Space-separated tokens</a></li>
     <li><a href="infrastructure.html#comma-separated-tokens"><span class="secno">2.4.7 </span>Comma-separated tokens</a></li>
     <li><a href="infrastructure.html#keywords-and-enumerated-attributes"><span class="secno">2.4.8 </span>Keywords and enumerated attributes</a></li>
     <li><a href="infrastructure.html#syntax-references"><span class="secno">2.4.9 </span>References</a></li></ol></li>
   <li><a href="infrastructure.html#urls"><span class="secno">2.5 </span>URLs</a>
    <ol><li><a href="infrastructure.html#terminology-0"><span class="secno">2.5.1 </span>Terminology</a></li>
     <li><a href="infrastructure.html#parsing-urls"><span class="secno">2.5.2 </span>Parsing URLs</a></li>
     <li><a href="infrastructure.html#resolving-urls"><span class="secno">2.5.3 </span>Resolving URLs</a></li>
     <li><a href="infrastructure.html#dynamic-changes-to-base-urls"><span class="secno">2.5.4 </span>Dynamic changes to base URLs</a></li>
     <li><a href="infrastructure.html#interfaces-for-url-manipulation"><span class="secno">2.5.5 </span>Interfaces for URL manipulation</a></li></ol></li>
   <li><a href="infrastructure.html#fetching-resources"><span class="secno">2.6 </span>Fetching resources</a>
    <ol><li><a href="infrastructure.html#concept-http-equivalent"><span class="secno">2.6.1 </span>Protocol concepts</a></li>
     <li><a href="infrastructure.html#encrypted-http-and-related-security-concerns"><span class="secno">2.6.2 </span>Encrypted HTTP and related security concerns</a></li></ol></li>
   <li><a href="infrastructure.html#content-type-sniffing"><span class="secno">2.7 </span>Determining the type of a resource</a>
    <ol><li><a href="infrastructure.html#content-type"><span class="secno">2.7.1 </span>Content-Type metadata</a></li>
     <li><a href="infrastructure.html#content-type-sniffing:-web-pages"><span class="secno">2.7.2 </span>Content-Type sniffing: Web pages</a></li>
     <li><a href="infrastructure.html#content-type-sniffing:-text-or-binary"><span class="secno">2.7.3 </span>Content-Type sniffing: text or binary</a></li>
     <li><a href="infrastructure.html#content-type-sniffing:-unknown-type"><span class="secno">2.7.4 </span>Content-Type sniffing: unknown type</a></li>
     <li><a href="infrastructure.html#content-type-sniffing:-image"><span class="secno">2.7.5 </span>Content-Type sniffing: image</a></li>
     <li><a href="infrastructure.html#content-type-sniffing:-feed-or-html"><span class="secno">2.7.6 </span>Content-Type sniffing: feed or HTML</a></li></ol></li>
   <li><a href="infrastructure.html#common-dom-interfaces"><span class="secno">2.8 </span>Common DOM interfaces</a>
    <ol><li><a href="infrastructure.html#reflecting-content-attributes-in-dom-attributes"><span class="secno">2.8.1 </span>Reflecting content attributes in DOM attributes</a></li>
     <li><a href="infrastructure.html#collections"><span class="secno">2.8.2 </span>Collections</a>
      <ol><li><a href="infrastructure.html#htmlcollection"><span class="secno">2.8.2.1 </span>HTMLCollection</a></li>
       <li><a href="infrastructure.html#htmlformcontrolscollection"><span class="secno">2.8.2.2 </span>HTMLFormControlsCollection</a></li>
       <li><a href="infrastructure.html#htmloptionscollection"><span class="secno">2.8.2.3 </span>HTMLOptionsCollection</a></li></ol></li>
     <li><a href="infrastructure.html#domtokenlist"><span class="secno">2.8.3 </span>DOMTokenList</a></li>
     <li><a href="infrastructure.html#safe-passing-of-structured-data"><span class="secno">2.8.4 </span>Safe passing of structured data</a></li>
     <li><a href="infrastructure.html#domstringmap"><span class="secno">2.8.5 </span>DOMStringMap</a></li>
     <li><a href="infrastructure.html#dom-feature-strings"><span class="secno">2.8.6 </span>DOM feature strings</a></li>
     <li><a href="infrastructure.html#exceptions"><span class="secno">2.8.7 </span>Exceptions</a></li>
     <li><a href="infrastructure.html#garbage-collection"><span class="secno">2.8.8 </span>Garbage collection</a></li></ol></li></ol></li>
 <li><a href="dom.html#dom"><span class="secno">3 </span>Semantics and structure of HTML documents</a>
  <ol><li><a href="dom.html#semantics-intro"><span class="secno">3.1 </span>Introduction</a></li>
   <li><a href="dom.html#documents"><span class="secno">3.2 </span>Documents</a>
    <ol><li><a href="dom.html#documents-in-the-dom"><span class="secno">3.2.1 </span>Documents in the DOM</a></li>
     <li><a href="dom.html#security"><span class="secno">3.2.2 </span>Security</a></li>
     <li><a href="dom.html#resource-metadata-management"><span class="secno">3.2.3 </span>Resource metadata management</a></li>
     <li><a href="dom.html#dom-tree-accessors"><span class="secno">3.2.4 </span>DOM tree accessors</a></li></ol></li>
   <li><a href="dom.html#elements"><span class="secno">3.3 </span>Elements</a>
    <ol><li><a href="dom.html#semantics-0"><span class="secno">3.3.1 </span>Semantics</a></li>
     <li><a href="dom.html#elements-in-the-dom"><span class="secno">3.3.2 </span>Elements in the DOM</a></li>
     <li><a href="dom.html#global-attributes"><span class="secno">3.3.3 </span>Global attributes</a>
      <ol><li><a href="dom.html#the-id-attribute"><span class="secno">3.3.3.1 </span>The <code>id</code> attribute</a></li>
       <li><a href="dom.html#the-title-attribute"><span class="secno">3.3.3.2 </span>The <code>title</code> attribute</a></li>
       <li><a href="dom.html#the-lang-and-xml:lang-attributes"><span class="secno">3.3.3.3 </span>The <code>lang</code> and <code>xml:lang</code>
  attributes</a></li>
       <li><a href="dom.html#the-xml:base-attribute-xml-only"><span class="secno">3.3.3.4 </span>The <code>xml:base</code>
  attribute (XML only)</a></li>
       <li><a href="dom.html#the-dir-attribute"><span class="secno">3.3.3.5 </span>The <code>dir</code> attribute</a></li>
       <li><a href="dom.html#classes"><span class="secno">3.3.3.6 </span>The <code>class</code> attribute</a></li>
       <li><a href="dom.html#the-style-attribute"><span class="secno">3.3.3.7 </span>The <code>style</code> attribute</a></li>
       <li><a href="dom.html#embedding-custom-non-visible-data"><span class="secno">3.3.3.8 </span>Embedding custom non-visible data</a></li></ol></li></ol></li>
   <li><a href="dom.html#content-models"><span class="secno">3.4 </span>Content models</a>
    <ol><li><a href="dom.html#kinds-of-content"><span class="secno">3.4.1 </span>Kinds of content</a>
      <ol><li><a href="dom.html#metadata-content"><span class="secno">3.4.1.1 </span>Metadata content</a></li>
       <li><a href="dom.html#flow-content"><span class="secno">3.4.1.2 </span>Flow content</a></li>
       <li><a href="dom.html#sectioning-content"><span class="secno">3.4.1.3 </span>Sectioning content</a></li>
       <li><a href="dom.html#heading-content"><span class="secno">3.4.1.4 </span>Heading content</a></li>
       <li><a href="dom.html#phrasing-content"><span class="secno">3.4.1.5 </span>Phrasing content</a></li>
       <li><a href="dom.html#embedded-content"><span class="secno">3.4.1.6 </span>Embedded content</a></li>
       <li><a href="dom.html#interactive-content"><span class="secno">3.4.1.7 </span>Interactive content</a></li></ol></li>
     <li><a href="dom.html#transparent-content-models"><span class="secno">3.4.2 </span>Transparent content models</a></li></ol></li>
   <li><a href="dom.html#paragraphs"><span class="secno">3.5 </span>Paragraphs</a></li>
   <li><a href="dom.html#apis-in-html-documents"><span class="secno">3.6 </span>APIs in HTML documents</a></li>
   <li><a href="dom.html#dynamic-markup-insertion"><span class="secno">3.7 </span>Dynamic markup insertion</a>
    <ol><li><a href="dom.html#controlling-the-input-stream"><span class="secno">3.7.1 </span>Controlling the input stream</a></li>
     <li><a href="dom.html#document.write"><span class="secno">3.7.2 </span><code title="dom-document-write">document.write()</code></a></li>
     <li><a href="dom.html#document.writeln"><span class="secno">3.7.3 </span><code title="dom-document-writeln">document.writeln()</code></a></li>
     <li><a href="dom.html#innerhtml"><span class="secno">3.7.4 </span><code title="dom-innerHTML">innerHTML</code></a></li>
     <li><a href="dom.html#outerhtml"><span class="secno">3.7.5 </span><code title="dom-outerHTML">outerHTML</code></a></li>
     <li><a href="dom.html#insertadjacenthtml"><span class="secno">3.7.6 </span><code title="dom-insertAdjacentHTML">insertAdjacentHTML()</code></a></li></ol></li></ol></li>
 <li><a href="semantics.html#semantics"><span class="secno">4 </span>The elements of HTML</a>
  <ol><li><a href="semantics.html#the-root-element"><span class="secno">4.1 </span>The root element</a>
    <ol><li><a href="semantics.html#the-html-element"><span class="secno">4.1.1 </span>The <code>html</code> element</a></li></ol></li>
   <li><a href="semantics.html#document-metadata"><span class="secno">4.2 </span>Document metadata</a>
    <ol><li><a href="semantics.html#the-head-element"><span class="secno">4.2.1 </span>The <code>head</code> element</a></li>
     <li><a href="semantics.html#the-title-element"><span class="secno">4.2.2 </span>The <code>title</code> element</a></li>
     <li><a href="semantics.html#the-base-element"><span class="secno">4.2.3 </span>The <code>base</code> element</a></li>
     <li><a href="semantics.html#the-link-element"><span class="secno">4.2.4 </span>The <code>link</code> element</a></li>
     <li><a href="semantics.html#meta"><span class="secno">4.2.5 </span>The <code>meta</code> element</a>
      <ol><li><a href="semantics.html#standard-metadata-names"><span class="secno">4.2.5.1 </span>Standard metadata names</a></li>
       <li><a href="semantics.html#other-metadata-names"><span class="secno">4.2.5.2 </span>Other metadata names</a></li>
       <li><a href="semantics.html#pragma-directives"><span class="secno">4.2.5.3 </span>Pragma directives</a></li>
       <li><a href="semantics.html#other-pragma-directives"><span class="secno">4.2.5.4 </span>Other pragma directives</a></li>
       <li><a href="semantics.html#charset"><span class="secno">4.2.5.5 </span>Specifying the document's character encoding</a></li></ol></li>
     <li><a href="semantics.html#the-style-element"><span class="secno">4.2.6 </span>The <code>style</code> element</a></li>
     <li><a href="semantics.html#styling"><span class="secno">4.2.7 </span>Styling</a></li></ol></li>
   <li><a href="semantics.html#scripting-1"><span class="secno">4.3 </span>Scripting</a>
    <ol><li><a href="semantics.html#script"><span class="secno">4.3.1 </span>The <code>script</code> element</a>
      <ol><li><a href="semantics.html#scriptingLanguages"><span class="secno">4.3.1.1 </span>Scripting languages</a></li>
       <li><a href="semantics.html#inline-documentation-for-external-scripts"><span class="secno">4.3.1.2 </span>Inline documentation for external scripts</a></li></ol></li>
     <li><a href="semantics.html#the-noscript-element"><span class="secno">4.3.2 </span>The <code>noscript</code> element</a></li>
     <li><a href="semantics.html#the-eventsource-element"><span class="secno">4.3.3 </span>The <code>eventsource</code> element</a></li></ol></li>
   <li><a href="semantics.html#sections"><span class="secno">4.4 </span>Sections</a>
    <ol><li><a href="semantics.html#the-body-element"><span class="secno">4.4.1 </span>The <code>body</code> element</a></li>
     <li><a href="semantics.html#the-section-element"><span class="secno">4.4.2 </span>The <code>section</code> element</a></li>
     <li><a href="semantics.html#the-nav-element"><span class="secno">4.4.3 </span>The <code>nav</code> element</a></li>
     <li><a href="semantics.html#the-article-element"><span class="secno">4.4.4 </span>The <code>article</code> element</a></li>
     <li><a href="semantics.html#the-aside-element"><span class="secno">4.4.5 </span>The <code>aside</code> element</a></li>
     <li><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements"><span class="secno">4.4.6 </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="semantics.html#the-header-element"><span class="secno">4.4.7 </span>The <code>header</code> element</a></li>
     <li><a href="semantics.html#the-footer-element"><span class="secno">4.4.8 </span>The <code>footer</code> element</a></li>
     <li><a href="semantics.html#the-address-element"><span class="secno">4.4.9 </span>The <code>address</code> element</a></li>
     <li><a href="semantics.html#headings-and-sections"><span class="secno">4.4.10 </span>Headings and sections</a>
      <ol><li><a href="semantics.html#outlines"><span class="secno">4.4.10.1 </span>Creating an outline</a></li>
       <li><a href="semantics.html#distinguishing-site-wide-headings-from-page-headings"><span class="secno">4.4.10.2 </span>Distinguishing site-wide headings from page headings</a></li></ol></li></ol></li>
   <li><a href="semantics.html#grouping-content"><span class="secno">4.5 </span>Grouping content</a>
    <ol><li><a href="semantics.html#the-p-element"><span class="secno">4.5.1 </span>The <code>p</code> element</a></li>
     <li><a href="semantics.html#the-hr-element"><span class="secno">4.5.2 </span>The <code>hr</code> element</a></li>
     <li><a href="semantics.html#the-br-element"><span class="secno">4.5.3 </span>The <code>br</code> element</a></li>
     <li><a href="semantics.html#the-pre-element"><span class="secno">4.5.4 </span>The <code>pre</code> element</a></li>
     <li><a href="semantics.html#the-dialog-element"><span class="secno">4.5.5 </span>The <code>dialog</code> element</a></li>
     <li><a href="semantics.html#the-blockquote-element"><span class="secno">4.5.6 </span>The <code>blockquote</code> element</a></li>
     <li><a href="semantics.html#the-ol-element"><span class="secno">4.5.7 </span>The <code>ol</code> element</a></li>
     <li><a href="semantics.html#the-ul-element"><span class="secno">4.5.8 </span>The <code>ul</code> element</a></li>
     <li><a href="semantics.html#the-li-element"><span class="secno">4.5.9 </span>The <code>li</code> element</a></li>
     <li><a href="semantics.html#the-dl-element"><span class="secno">4.5.10 </span>The <code>dl</code> element</a></li>
     <li><a href="semantics.html#the-dt-element"><span class="secno">4.5.11 </span>The <code>dt</code> element</a></li>
     <li><a href="semantics.html#the-dd-element"><span class="secno">4.5.12 </span>The <code>dd</code> element</a></li>
     <li><a href="semantics.html#common-grouping-idioms"><span class="secno">4.5.13 </span>Common grouping idioms</a>
      <ol><li><a href="semantics.html#tag-clouds"><span class="secno">4.5.13.1 </span>Tag clouds</a></li></ol></li></ol></li>
   <li><a href="text-level-semantics.html#text-level-semantics"><span class="secno">4.6 </span>Text-level semantics</a>
    <ol><li><a href="text-level-semantics.html#the-a-element"><span class="secno">4.6.1 </span>The <code>a</code> element</a></li>
     <li><a href="text-level-semantics.html#the-q-element"><span class="secno">4.6.2 </span>The <code>q</code> element</a></li>
     <li><a href="text-level-semantics.html#the-cite-element"><span class="secno">4.6.3 </span>The <code>cite</code> element</a></li>
     <li><a href="text-level-semantics.html#the-em-element"><span class="secno">4.6.4 </span>The <code>em</code> element</a></li>
     <li><a href="text-level-semantics.html#the-strong-element"><span class="secno">4.6.5 </span>The <code>strong</code> element</a></li>
     <li><a href="text-level-semantics.html#the-small-element"><span class="secno">4.6.6 </span>The <code>small</code> element</a></li>
     <li><a href="text-level-semantics.html#the-mark-element"><span class="secno">4.6.7 </span>The <code>mark</code> element</a></li>
     <li><a href="text-level-semantics.html#the-dfn-element"><span class="secno">4.6.8 </span>The <code>dfn</code> element</a></li>
     <li><a href="text-level-semantics.html#the-abbr-element"><span class="secno">4.6.9 </span>The <code>abbr</code> element</a></li>
     <li><a href="text-level-semantics.html#the-time-element"><span class="secno">4.6.10 </span>The <code>time</code> element</a></li>
     <li><a href="text-level-semantics.html#the-progress-element"><span class="secno">4.6.11 </span>The <code>progress</code> element</a></li>
     <li><a href="text-level-semantics.html#the-meter-element"><span class="secno">4.6.12 </span>The <code>meter</code> element</a></li>
     <li><a href="text-level-semantics.html#the-code-element"><span class="secno">4.6.13 </span>The <code>code</code> element</a></li>
     <li><a href="text-level-semantics.html#the-var-element"><span class="secno">4.6.14 </span>The <code>var</code> element</a></li>
     <li><a href="text-level-semantics.html#the-samp-element"><span class="secno">4.6.15 </span>The <code>samp</code> element</a></li>
     <li><a href="text-level-semantics.html#the-kbd-element"><span class="secno">4.6.16 </span>The <code>kbd</code> element</a></li>
     <li><a href="text-level-semantics.html#the-sub-and-sup-elements"><span class="secno">4.6.17 </span>The <code>sub</code> and <code>sup</code> elements</a></li>
     <li><a href="text-level-semantics.html#the-span-element"><span class="secno">4.6.18 </span>The <code>span</code> element</a></li>
     <li><a href="text-level-semantics.html#the-i-element"><span class="secno">4.6.19 </span>The <code>i</code> element</a></li>
     <li><a href="text-level-semantics.html#the-b-element"><span class="secno">4.6.20 </span>The <code>b</code> element</a></li>
     <li><a href="text-level-semantics.html#the-bdo-element"><span class="secno">4.6.21 </span>The <code>bdo</code> element</a></li>
     <li><a href="text-level-semantics.html#the-ruby-element"><span class="secno">4.6.22 </span>The <code>ruby</code> element</a></li>
     <li><a href="text-level-semantics.html#the-rt-element"><span class="secno">4.6.23 </span>The <code>rt</code> element</a></li>
     <li><a href="text-level-semantics.html#the-rp-element"><span class="secno">4.6.24 </span>The <code>rp</code> element</a></li>
     <li><a href="text-level-semantics.html#usage-summary"><span class="secno">4.6.25 </span>Usage summary</a></li>
     <li><a href="text-level-semantics.html#footnotes"><span class="secno">4.6.26 </span>Footnotes</a></li></ol></li>
   <li><a href="text-level-semantics.html#edits"><span class="secno">4.7 </span>Edits</a>
    <ol><li><a href="text-level-semantics.html#the-ins-element"><span class="secno">4.7.1 </span>The <code>ins</code> element</a></li>
     <li><a href="text-level-semantics.html#the-del-element"><span class="secno">4.7.2 </span>The <code>del</code> element</a></li>
     <li><a href="text-level-semantics.html#attributes-common-to-ins-and-del-elements"><span class="secno">4.7.3 </span>Attributes common to <code>ins</code> and <code>del</code> elements</a></li>
     <li><a href="text-level-semantics.html#edits-and-paragraphs"><span class="secno">4.7.4 </span>Edits and paragraphs</a></li>
     <li><a href="text-level-semantics.html#edits-and-lists"><span class="secno">4.7.5 </span>Edits and lists</a></li></ol></li>
   <li><a href="embedded-content-0.html#embedded-content-0"><span class="secno">4.8 </span>Embedded content</a>
    <ol><li><a href="embedded-content-0.html#the-figure-element"><span class="secno">4.8.1 </span>The <code>figure</code> element</a></li>
     <li><a href="embedded-content-0.html#the-img-element"><span class="secno">4.8.2 </span>The <code>img</code> element</a>
      <ol><li><a href="embedded-content-0.html#alt"><span class="secno">4.8.2.1 </span>Requirements for providing text to act as an alternative for images</a>
        <ol><li><a href="embedded-content-0.html#a-link-or-button-containing-nothing-but-the-image"><span class="secno">4.8.2.1.1 </span>A link or button containing nothing but the image</a></li>
         <li><a href="embedded-content-0.html#a-phrase-or-paragraph-with-an-alternative-graphical-representation:-charts-diagrams-graphs-maps-illustrations"><span class="secno">4.8.2.1.2 </span>A phrase or paragraph with an alternative graphical representation: charts, diagrams, graphs, maps, illustrations</a></li>
         <li><a href="embedded-content-0.html#a-short-phrase-or-label-with-an-alternative-graphical-representation:-icons-logos"><span class="secno">4.8.2.1.3 </span>A short phrase or label with an alternative graphical representation: icons, logos</a></li>
         <li><a href="embedded-content-0.html#text-that-has-been-rendered-to-a-graphic-for-typographical-effect"><span class="secno">4.8.2.1.4 </span>Text that has been rendered to a graphic for typographical effect</a></li>
         <li><a href="embedded-content-0.html#a-graphical-representation-of-some-of-the-surrounding-text"><span class="secno">4.8.2.1.5 </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">4.8.2.1.6 </span>A purely decorative image that doesn't add any information</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">4.8.2.1.7 </span>A group of images that form a single larger picture with no links</a></li>
         <li><a href="embedded-content-0.html#a-group-of-images-that-form-a-single-larger-picture-with-links"><span class="secno">4.8.2.1.8 </span>A group of images that form a single larger picture with links</a></li>
         <li><a href="embedded-content-0.html#a-key-part-of-the-content"><span class="secno">4.8.2.1.9 </span>A key part of the content</a></li>
         <li><a href="embedded-content-0.html#an-image-not-intended-for-the-user"><span class="secno">4.8.2.1.10 </span>An image not intended for the user</a></li>
         <li><a href="embedded-content-0.html#an-image-in-an-e-mail-or-document-intended-for-a-specific-person-who-is-known-to-be-able-to-view-images"><span class="secno">4.8.2.1.11 </span>An image in an e-mail or document intended for a specific person who is known to be able to view images</a></li>
         <li><a href="embedded-content-0.html#general-guidelines"><span class="secno">4.8.2.1.12 </span>General guidelines</a></li>
         <li><a href="embedded-content-0.html#guidance-for-markup-generators"><span class="secno">4.8.2.1.13 </span>Guidance for markup generators</a></li></ol></li></ol></li>
     <li><a href="embedded-content-0.html#the-iframe-element"><span class="secno">4.8.3 </span>The <code>iframe</code> element</a></li>
     <li><a href="embedded-content-0.html#the-embed-element"><span class="secno">4.8.4 </span>The <code>embed</code> element</a></li>
     <li><a href="embedded-content-0.html#the-object-element"><span class="secno">4.8.5 </span>The <code>object</code> element</a></li>
     <li><a href="embedded-content-0.html#the-param-element"><span class="secno">4.8.6 </span>The <code>param</code> element</a></li>
     <li><a href="video.html#video"><span class="secno">4.8.7 </span>The <code>video</code> element</a>
      <ol><li><a href="video.html#video-and-audio-codecs-for-video-elements"><span class="secno">4.8.7.1 </span>Video and audio codecs for <code>video</code> elements</a></li></ol></li>
     <li><a href="video.html#audio"><span class="secno">4.8.8 </span>The <code>audio</code> element</a>
      <ol><li><a href="video.html#audio-codecs-for-audio-elements"><span class="secno">4.8.8.1 </span>Audio codecs for <code>audio</code> elements</a></li></ol></li>
     <li><a href="video.html#the-source-element"><span class="secno">4.8.9 </span>The <code>source</code> element</a></li>
     <li><a href="video.html#media-elements"><span class="secno">4.8.10 </span>Media elements</a>
      <ol><li><a href="video.html#error-codes"><span class="secno">4.8.10.1 </span>Error codes</a></li>
       <li><a href="video.html#location-of-the-media-resource"><span class="secno">4.8.10.2 </span>Location of the media resource</a></li>
       <li><a href="video.html#media-types"><span class="secno">4.8.10.3 </span>Media types</a></li>
       <li><a href="video.html#network-states"><span class="secno">4.8.10.4 </span>Network states</a></li>
       <li><a href="video.html#loading-the-media-resource"><span class="secno">4.8.10.5 </span>Loading the media resource</a></li>
       <li><a href="video.html#offsets-into-the-media-resource"><span class="secno">4.8.10.6 </span>Offsets into the media resource</a></li>
       <li><a href="video.html#the-ready-states"><span class="secno">4.8.10.7 </span>The ready states</a></li>
       <li><a href="video.html#cue-ranges"><span class="secno">4.8.10.8 </span>Cue ranges</a></li>
       <li><a href="video.html#playing-the-media-resource"><span class="secno">4.8.10.9 </span>Playing the media resource</a></li>
       <li><a href="video.html#seeking"><span class="secno">4.8.10.10 </span>Seeking</a></li>
       <li><a href="video.html#user-interface"><span class="secno">4.8.10.11 </span>User interface</a></li>
       <li><a href="video.html#time-ranges"><span class="secno">4.8.10.12 </span>Time ranges</a></li>
       <li><a href="video.html#mediaevents"><span class="secno">4.8.10.13 </span>Event summary</a></li>
       <li><a href="video.html#security-and-privacy-considerations"><span class="secno">4.8.10.14 </span>Security and privacy considerations</a></li></ol></li>
     <li><a href="the-canvas-element.html#the-canvas-element"><span class="secno">4.8.11 </span>The <code>canvas</code> element</a>
      <ol><li><a href="the-canvas-element.html#the-2d-context"><span class="secno">4.8.11.1 </span>The 2D context</a>
        <ol><li><a href="the-canvas-element.html#the-canvas-state"><span class="secno">4.8.11.1.1 </span>The canvas state</a></li>
         <li><a href="the-canvas-element.html#transformations"><span class="secno">4.8.11.1.2 </span>Transformations</a></li>
         <li><a href="the-canvas-element.html#compositing"><span class="secno">4.8.11.1.3 </span>Compositing</a></li>
         <li><a href="the-canvas-element.html#colors-and-styles"><span class="secno">4.8.11.1.4 </span>Colors and styles</a></li>
         <li><a href="the-canvas-element.html#line-styles"><span class="secno">4.8.11.1.5 </span>Line styles</a></li>
         <li><a href="the-canvas-element.html#shadows"><span class="secno">4.8.11.1.6 </span>Shadows</a></li>
         <li><a href="the-canvas-element.html#simple-shapes-rectangles"><span class="secno">4.8.11.1.7 </span>Simple shapes (rectangles)</a></li>
         <li><a href="the-canvas-element.html#complex-shapes-paths"><span class="secno">4.8.11.1.8 </span>Complex shapes (paths)</a></li>
         <li><a href="the-canvas-element.html#text"><span class="secno">4.8.11.1.9 </span>Text</a></li>
         <li><a href="the-canvas-element.html#images"><span class="secno">4.8.11.1.10 </span>Images</a></li>
         <li><a href="the-canvas-element.html#pixel-manipulation"><span class="secno">4.8.11.1.11 </span>Pixel manipulation</a></li>
         <li><a href="the-canvas-element.html#drawing-model"><span class="secno">4.8.11.1.12 </span>Drawing model</a></li></ol></li>
       <li><a href="the-canvas-element.html#color-spaces-and-color-correction"><span class="secno">4.8.11.2 </span>Color spaces and color correction</a></li>
       <li><a href="the-canvas-element.html#security-with-canvas-elements"><span class="secno">4.8.11.3 </span>Security with <code>canvas</code> elements</a></li></ol></li>
     <li><a href="the-canvas-element.html#the-map-element"><span class="secno">4.8.12 </span>The <code>map</code> element</a></li>
     <li><a href="the-canvas-element.html#the-area-element"><span class="secno">4.8.13 </span>The <code>area</code> element</a></li>
     <li><a href="the-canvas-element.html#image-maps"><span class="secno">4.8.14 </span>Image maps</a>
      <ol><li><a href="the-canvas-element.html#authoring"><span class="secno">4.8.14.1 </span>Authoring</a></li>
       <li><a href="the-canvas-element.html#processing-model"><span class="secno">4.8.14.2 </span>Processing model</a></li></ol></li>
     <li><a href="the-canvas-element.html#mathml"><span class="secno">4.8.15 </span>MathML</a></li>
     <li><a href="the-canvas-element.html#svg"><span class="secno">4.8.16 </span>SVG</a></li>
     <li><a href="the-canvas-element.html#dimension-attributes"><span class="secno">4.8.17 </span>Dimension attributes</a></li></ol></li>
   <li><a href="tabular-data.html#tabular-data"><span class="secno">4.9 </span>Tabular data</a>
    <ol><li><a href="tabular-data.html#table-intro"><span class="secno">4.9.1 </span>Introduction</a></li>
     <li><a href="tabular-data.html#the-table-element"><span class="secno">4.9.2 </span>The <code>table</code> element</a></li>
     <li><a href="tabular-data.html#the-caption-element"><span class="secno">4.9.3 </span>The <code>caption</code> element</a></li>
     <li><a href="tabular-data.html#the-colgroup-element"><span class="secno">4.9.4 </span>The <code>colgroup</code> element</a></li>
     <li><a href="tabular-data.html#the-col-element"><span class="secno">4.9.5 </span>The <code>col</code> element</a></li>
     <li><a href="tabular-data.html#the-tbody-element"><span class="secno">4.9.6 </span>The <code>tbody</code> element</a></li>
     <li><a href="tabular-data.html#the-thead-element"><span class="secno">4.9.7 </span>The <code>thead</code> element</a></li>
     <li><a href="tabular-data.html#the-tfoot-element"><span class="secno">4.9.8 </span>The <code>tfoot</code> element</a></li>
     <li><a href="tabular-data.html#the-tr-element"><span class="secno">4.9.9 </span>The <code>tr</code> element</a></li>
     <li><a href="tabular-data.html#the-td-element"><span class="secno">4.9.10 </span>The <code>td</code> element</a></li>
     <li><a href="tabular-data.html#the-th-element"><span class="secno">4.9.11 </span>The <code>th</code> element</a></li>
     <li><a href="tabular-data.html#attributes-common-to-td-and-th-elements"><span class="secno">4.9.12 </span>Attributes common to <code>td</code> and <code>th</code> elements</a></li>
     <li><a href="tabular-data.html#processing-model-0"><span class="secno">4.9.13 </span>Processing model</a>
      <ol><li><a href="tabular-data.html#forming-a-table"><span class="secno">4.9.13.1 </span>Forming a table</a></li>
       <li><a href="tabular-data.html#header-and-data-cell-semantics"><span class="secno">4.9.13.2 </span>Forming relationships between data cells and header cells</a></li></ol></li></ol></li>
   <li><a href="forms.html#forms"><span class="secno">4.10 </span>Forms</a>
    <ol><li><a href="forms.html#the-form-element"><span class="secno">4.10.1 </span>The <code>form</code> element</a></li>
     <li><a href="forms.html#the-fieldset-element"><span class="secno">4.10.2 </span>The <code>fieldset</code> element</a></li>
     <li><a href="forms.html#the-label-element"><span class="secno">4.10.3 </span>The <code>label</code> element</a></li>
     <li><a href="forms.html#the-input-element"><span class="secno">4.10.4 </span>The <code>input</code> element</a>
      <ol><li><a href="forms.html#states-of-the-type-attribute"><span class="secno">4.10.4.1 </span>States of the <code title="attr-input-type">type</code> attribute</a>
        <ol><li><a href="forms.html#hidden-state"><span class="secno">4.10.4.1.1 </span>Hidden state</a></li>
         <li><a href="forms.html#text-state-and-search-state"><span class="secno">4.10.4.1.2 </span>Text state and Search state</a></li>
         <li><a href="forms.html#url-state"><span class="secno">4.10.4.1.3 </span>URL state</a></li>
         <li><a href="forms.html#e-mail-state"><span class="secno">4.10.4.1.4 </span>E-mail state</a></li>
         <li><a href="forms.html#password-state"><span class="secno">4.10.4.1.5 </span>Password state</a></li>
         <li><a href="forms.html#date-and-time-state"><span class="secno">4.10.4.1.6 </span>Date and Time state</a></li>
         <li><a href="forms.html#date-state"><span class="secno">4.10.4.1.7 </span>Date state</a></li>
         <li><a href="forms.html#month-state"><span class="secno">4.10.4.1.8 </span>Month state</a></li>
         <li><a href="forms.html#week-state"><span class="secno">4.10.4.1.9 </span>Week state</a></li>
         <li><a href="forms.html#time-state"><span class="secno">4.10.4.1.10 </span>Time state</a></li>
         <li><a href="forms.html#local-date-and-time-state"><span class="secno">4.10.4.1.11 </span>Local Date and Time state</a></li>
         <li><a href="forms.html#number-state"><span class="secno">4.10.4.1.12 </span>Number state</a></li>
         <li><a href="forms.html#range-state"><span class="secno">4.10.4.1.13 </span>Range state</a></li>
         <li><a href="forms.html#color-state"><span class="secno">4.10.4.1.14 </span>Color state</a></li>
         <li><a href="forms.html#checkbox-state"><span class="secno">4.10.4.1.15 </span>Checkbox state</a></li>
         <li><a href="forms.html#radio-button-state"><span class="secno">4.10.4.1.16 </span>Radio Button state</a></li>
         <li><a href="forms.html#file-upload-state"><span class="secno">4.10.4.1.17 </span>File Upload state</a></li>
         <li><a href="forms.html#submit-button-state"><span class="secno">4.10.4.1.18 </span>Submit Button state</a></li>
         <li><a href="forms.html#image-button-state"><span class="secno">4.10.4.1.19 </span>Image Button state</a></li>
         <li><a href="forms.html#reset-button-state"><span class="secno">4.10.4.1.20 </span>Reset Button state</a></li>
         <li><a href="forms.html#button-state"><span class="secno">4.10.4.1.21 </span>Button state</a></li></ol></li>
       <li><a href="forms.html#common-input-element-attributes"><span class="secno">4.10.4.2 </span>Common <code>input</code> element attributes</a>
        <ol><li><a href="forms.html#the-autocomplete-attribute"><span class="secno">4.10.4.2.1 </span>The <code title="attr-input-autocomplete">autocomplete</code> attribute</a></li>
         <li><a href="forms.html#the-list-attribute"><span class="secno">4.10.4.2.2 </span>The <code title="attr-input-list">list</code> attribute</a></li>
         <li><a href="forms.html#the-readonly-attribute"><span class="secno">4.10.4.2.3 </span>The <code title="attr-input-readonly">readonly</code> attribute</a></li>
         <li><a href="forms.html#the-size-attribute"><span class="secno">4.10.4.2.4 </span>The <code title="attr-input-size">size</code> attribute</a></li>
         <li><a href="forms.html#the-required-attribute"><span class="secno">4.10.4.2.5 </span>The <code title="attr-input-required">required</code> attribute</a></li>
         <li><a href="forms.html#the-multiple-attribute"><span class="secno">4.10.4.2.6 </span>The <code title="attr-input-multiple">multiple</code> attribute</a></li>
         <li><a href="forms.html#the-maxlength-attribute"><span class="secno">4.10.4.2.7 </span>The <code title="attr-input-maxlength">maxlength</code> attribute</a></li>
         <li><a href="forms.html#the-pattern-attribute"><span class="secno">4.10.4.2.8 </span>The <code title="attr-input-pattern">pattern</code> attribute</a></li>
         <li><a href="forms.html#the-min-and-max-attributes"><span class="secno">4.10.4.2.9 </span>The <code title="attr-input-min">min</code> and <code title="attr-input-max">max</code> attributes</a></li>
         <li><a href="forms.html#the-step-attribute"><span class="secno">4.10.4.2.10 </span>The <code title="attr-input-step">step</code> attribute</a></li>
         <li><a href="forms.html#the-placeholder-attribute"><span class="secno">4.10.4.2.11 </span>The <code title="attr-input-placeholder">placeholder</code> attribute</a></li></ol></li>
       <li><a href="forms.html#common-input-element-apis"><span class="secno">4.10.4.3 </span>Common <code>input</code> element APIs</a></li>
       <li><a href="forms.html#common-event-behaviors"><span class="secno">4.10.4.4 </span>Common event behaviors</a></li></ol></li>
     <li><a href="forms.html#the-button-element"><span class="secno">4.10.5 </span>The <code>button</code> element</a></li>
     <li><a href="forms.html#the-select-element"><span class="secno">4.10.6 </span>The <code>select</code> element</a></li>
     <li><a href="forms.html#the-datalist-element"><span class="secno">4.10.7 </span>The <code>datalist</code> element</a></li>
     <li><a href="forms.html#the-optgroup-element"><span class="secno">4.10.8 </span>The <code>optgroup</code> element</a></li>
     <li><a href="forms.html#the-option-element"><span class="secno">4.10.9 </span>The <code>option</code> element</a></li>
     <li><a href="forms.html#the-textarea-element"><span class="secno">4.10.10 </span>The <code>textarea</code> element</a></li>
     <li><a href="forms.html#the-output-element"><span class="secno">4.10.11 </span>The <code>output</code> element</a></li>
     <li><a href="forms.html#association-of-controls-and-forms"><span class="secno">4.10.12 </span>Association of controls and forms</a></li>
     <li><a href="forms.html#attributes-common-to-form-controls"><span class="secno">4.10.13 </span>Attributes common to form controls</a>
      <ol><li><a href="forms.html#naming-form-controls"><span class="secno">4.10.13.1 </span>Naming form controls</a></li>
       <li><a href="forms.html#enabling-and-disabling-form-controls"><span class="secno">4.10.13.2 </span>Enabling and disabling form controls</a></li>
       <li><a href="forms.html#a-form-control-s-value"><span class="secno">4.10.13.3 </span>A form control's value</a></li>
       <li><a href="forms.html#autofocusing-a-form-control"><span class="secno">4.10.13.4 </span>Autofocusing a form control</a></li>
       <li><a href="forms.html#limiting-user-input-length"><span class="secno">4.10.13.5 </span>Limiting user input length</a></li>
       <li><a href="forms.html#form-submission"><span class="secno">4.10.13.6 </span>Form submission</a></li></ol></li>
     <li><a href="forms.html#constraints"><span class="secno">4.10.14 </span>Constraints</a>
      <ol><li><a href="forms.html#definitions"><span class="secno">4.10.14.1 </span>Definitions</a></li>
       <li><a href="forms.html#constraint-validation"><span class="secno">4.10.14.2 </span>Constraint validation</a></li>
       <li><a href="forms.html#the-constraint-validation-api"><span class="secno">4.10.14.3 </span>The constraint validation API</a></li>
       <li><a href="forms.html#security-0"><span class="secno">4.10.14.4 </span>Security</a></li></ol></li>
     <li><a href="forms.html#form-submission-0"><span class="secno">4.10.15 </span>Form submission</a>
      <ol><li><a href="forms.html#implicit-submission"><span class="secno">4.10.15.1 </span>Implicit submission</a></li>
       <li><a href="forms.html#form-submission-algorithm"><span class="secno">4.10.15.2 </span>Form submission algorithm</a></li>
       <li><a href="forms.html#url-encoded-form-data"><span class="secno">4.10.15.3 </span>URL-encoded form data</a></li>
       <li><a href="forms.html#multipart-form-data"><span class="secno">4.10.15.4 </span>Multipart form data</a></li>
       <li><a href="forms.html#plain-text-form-data"><span class="secno">4.10.15.5 </span>Plain text form data</a></li></ol></li>
     <li><a href="forms.html#resetting-a-form"><span class="secno">4.10.16 </span>Resetting a form</a></li>
     <li><a href="forms.html#event-dispatch"><span class="secno">4.10.17 </span>Event dispatch</a></li></ol></li>
   <li><a href="interactive-elements.html#interactive-elements"><span class="secno">4.11 </span>Interactive elements</a>
    <ol><li><a href="interactive-elements.html#the-details-element"><span class="secno">4.11.1 </span>The <code>details</code> element</a></li>
     <li><a href="interactive-elements.html#datagrid"><span class="secno">4.11.2 </span>The <code>datagrid</code> element</a>
      <ol><li><a href="interactive-elements.html#the-datagrid-data-model"><span class="secno">4.11.2.1 </span>The <code>datagrid</code> data model</a></li>
       <li><a href="interactive-elements.html#how-rows-are-identified"><span class="secno">4.11.2.2 </span>How rows are identified</a></li>
       <li><a href="interactive-elements.html#the-data-provider-interface"><span class="secno">4.11.2.3 </span>The data provider interface</a></li>
       <li><a href="interactive-elements.html#the-default-data-provider"><span class="secno">4.11.2.4 </span>The default data provider</a>
        <ol><li><a href="interactive-elements.html#commonDefaultDataGridMethodDefinitions"><span class="secno">4.11.2.4.1 </span>Common default data
  provider method definitions for cells</a></li></ol></li>
       <li><a href="interactive-elements.html#populating-the-datagrid-element"><span class="secno">4.11.2.5 </span>Populating the <code>datagrid</code> element</a></li>
       <li><a href="interactive-elements.html#updating-the-datagrid"><span class="secno">4.11.2.6 </span>Updating the <code>datagrid</code></a></li>
       <li><a href="interactive-elements.html#requirements-for-interactive-user-agents"><span class="secno">4.11.2.7 </span>Requirements for interactive user agents</a></li>
       <li><a href="interactive-elements.html#the-selection"><span class="secno">4.11.2.8 </span>The selection</a></li>
       <li><a href="interactive-elements.html#columns-and-captions"><span class="secno">4.11.2.9 </span>Columns and captions</a></li></ol></li>
     <li><a href="interactive-elements.html#the-command"><span class="secno">4.11.3 </span>The <code>command</code> element</a></li>
     <li><a href="interactive-elements.html#the-bb-element"><span class="secno">4.11.4 </span>The <code>bb</code> element</a>
      <ol><li><a href="interactive-elements.html#browser-button-types"><span class="secno">4.11.4.1 </span>Browser button types</a>
        <ol><li><a href="interactive-elements.html#the-make-application-state"><span class="secno">4.11.4.1.1 </span>The <i>make application</i> state</a></li></ol></li></ol></li>
     <li><a href="interactive-elements.html#menus"><span class="secno">4.11.5 </span>The <code>menu</code> element</a>
      <ol><li><a href="interactive-elements.html#menus-intro"><span class="secno">4.11.5.1 </span>Introduction</a></li>
       <li><a href="interactive-elements.html#building-menus-and-tool-bars"><span class="secno">4.11.5.2 </span>Building menus and tool bars</a></li>
       <li><a href="interactive-elements.html#context-menus"><span class="secno">4.11.5.3 </span>Context menus</a></li>
       <li><a href="interactive-elements.html#tool-bars"><span class="secno">4.11.5.4 </span>Tool bars</a></li></ol></li>
     <li><a href="interactive-elements.html#commands"><span class="secno">4.11.6 </span>Commands</a>
      <ol><li><a href="interactive-elements.html#using-the-a-element-to-define-a-command"><span class="secno">4.11.6.1 </span>Using the <code>a</code> element to define a command</a></li>
       <li><a href="interactive-elements.html#using-the-button-element-to-define-a-command"><span class="secno">4.11.6.2 </span>Using the <code>button</code> element to define a command</a></li>
       <li><a href="interactive-elements.html#using-the-input-element-to-define-a-command"><span class="secno">4.11.6.3 </span>Using the <code>input</code> element to define a command</a></li>
       <li><a href="interactive-elements.html#using-the-option-element-to-define-a-command"><span class="secno">4.11.6.4 </span>Using the <code>option</code> element to define a command</a></li>
       <li><a href="interactive-elements.html#using-the-command-element-to-define-a-command"><span class="secno">4.11.6.5 </span>Using the <code>command</code> element to define
  a command</a></li>
       <li><a href="interactive-elements.html#using-the-bb-element-to-define-a-command"><span class="secno">4.11.6.6 </span>Using the <code>bb</code> element to define a command</a></li></ol></li></ol></li>
   <li><a href="interactive-elements.html#miscellaneous-elements"><span class="secno">4.12 </span>Miscellaneous elements</a>
    <ol><li><a href="interactive-elements.html#the-legend-element"><span class="secno">4.12.1 </span>The <code>legend</code> element</a></li>
     <li><a href="interactive-elements.html#the-div-element"><span class="secno">4.12.2 </span>The <code>div</code> element</a></li></ol></li>
   <li><a href="interactive-elements.html#matching-html-elements-using-selectors"><span class="secno">4.13 </span>Matching HTML elements using selectors</a></li></ol></li>
 <li><a href="browsers.html#browsers"><span class="secno">5 </span>Web browsers</a>
  <ol><li><a href="browsers.html#windows"><span class="secno">5.1 </span>Browsing contexts</a>
    <ol><li><a href="browsers.html#nested-browsing-contexts"><span class="secno">5.1.1 </span>Nested browsing contexts</a>
      <ol><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></li></ol></li>
     <li><a href="browsers.html#auxiliary-browsing-contexts"><span class="secno">5.1.2 </span>Auxiliary browsing contexts</a>
      <ol><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></li></ol></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-1"><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></li></ol></li>
   <li><a href="browsers.html#the-windowproxy-object"><span class="secno">5.2 </span>The <code>WindowProxy</code> object</a></li>
   <li><a href="browsers.html#the-window-object"><span class="secno">5.3 </span>The <code>Window</code> object</a>
    <ol><li><a href="browsers.html#security-2"><span class="secno">5.3.1 </span>Security</a></li>
     <li><a href="browsers.html#apis-for-creating-and-navigating-browsing-contexts-by-name"><span class="secno">5.3.2 </span>APIs for creating and navigating browsing contexts by name</a></li>
     <li><a href="browsers.html#accessing-other-browsing-contexts"><span class="secno">5.3.3 </span>Accessing other browsing contexts</a></li>
     <li><a href="browsers.html#garbage-collection-and-browsing-contexts"><span class="secno">5.3.4 </span>Garbage collection and browsing contexts</a></li>
     <li><a href="browsers.html#named-access-on-the-window-object"><span class="secno">5.3.5 </span>Named access on the <code>Window</code> object</a></li>
     <li><a href="browsers.html#browser-interface-elements"><span class="secno">5.3.6 </span>Browser interface elements</a></li></ol></li>
   <li><a href="browsers.html#origin"><span class="secno">5.4 </span>Origin</a>
    <ol><li><a href="browsers.html#relaxing-the-same-origin-restriction"><span class="secno">5.4.1 </span>Relaxing the same-origin restriction</a></li></ol></li>
   <li><a href="browsers.html#scripting"><span class="secno">5.5 </span>Scripting</a>
    <ol><li><a href="browsers.html#introduction-0"><span class="secno">5.5.1 </span>Introduction</a></li>
     <li><a href="browsers.html#enabling-and-disabling-scripting"><span class="secno">5.5.2 </span>Enabling and disabling scripting</a></li>
     <li><a href="browsers.html#processing-model-1"><span class="secno">5.5.3 </span>Processing model</a>
      <ol><li><a href="browsers.html#definitions-0"><span class="secno">5.5.3.1 </span>Definitions</a></li>
       <li><a href="browsers.html#calling-scripts"><span class="secno">5.5.3.2 </span>Calling scripts</a></li>
       <li><a href="browsers.html#creating-scripts"><span class="secno">5.5.3.3 </span>Creating scripts</a></li>
       <li><a href="browsers.html#killing-scripts"><span class="secno">5.5.3.4 </span>Killing scripts</a></li></ol></li>
     <li><a href="browsers.html#event-loops"><span class="secno">5.5.4 </span>Event loops</a>
      <ol><li><a href="browsers.html#generic-task-sources"><span class="secno">5.5.4.1 </span>Generic task sources</a></li></ol></li>
     <li><a href="browsers.html#javascript-protocol"><span class="secno">5.5.5 </span>The <code title="">javascript:</code> protocol</a></li>
     <li><a href="browsers.html#events"><span class="secno">5.5.6 </span>Events</a>
      <ol><li><a href="browsers.html#event-handler-attributes"><span class="secno">5.5.6.1 </span>Event handler attributes</a></li>
       <li><a href="browsers.html#event-handler-attributes-on-elements-and-on-window-objects"><span class="secno">5.5.6.2 </span>Event handler attributes on elements and on <code>Window</code> objects</a></li>
       <li><a href="browsers.html#event-firing"><span class="secno">5.5.6.3 </span>Event firing</a></li>
       <li><a href="browsers.html#events-and-the-window-object"><span class="secno">5.5.6.4 </span>Events and the <code>Window</code> object</a></li>
       <li><a href="browsers.html#runtime-script-errors"><span class="secno">5.5.6.5 </span>Runtime script errors</a></li></ol></li></ol></li>
   <li><a href="browsers.html#user-prompts"><span class="secno">5.6 </span>User prompts</a>
    <ol><li><a href="browsers.html#simple-dialogs"><span class="secno">5.6.1 </span>Simple dialogs</a></li>
     <li><a href="browsers.html#printing"><span class="secno">5.6.2 </span>Printing</a></li>
     <li><a href="browsers.html#dialogs-implemented-using-separate-documents"><span class="secno">5.6.3 </span>Dialogs implemented using separate documents</a></li></ol></li>
   <li><a href="browsers.html#system-state-and-capabilities"><span class="secno">5.7 </span>System state and capabilities</a>
    <ol><li><a href="browsers.html#client-identification"><span class="secno">5.7.1 </span>Client identification</a></li>
     <li><a href="browsers.html#custom-handlers"><span class="secno">5.7.2 </span>Custom protocol and content handlers</a>
      <ol><li><a href="browsers.html#security-and-privacy"><span class="secno">5.7.2.1 </span>Security and privacy</a></li>
       <li><a href="browsers.html#sample-handler-impl"><span class="secno">5.7.2.2 </span>Sample user interface</a></li></ol></li></ol></li>
   <li><a href="offline.html#offline"><span class="secno">5.8 </span>Offline Web applications</a>
    <ol><li><a href="offline.html#introduction-1"><span class="secno">5.8.1 </span>Introduction</a></li>
     <li><a href="offline.html#appcache"><span class="secno">5.8.2 </span>Application caches</a></li>
     <li><a href="offline.html#manifests"><span class="secno">5.8.3 </span>The cache manifest syntax</a>
      <ol><li><a href="offline.html#a-sample-manifest"><span class="secno">5.8.3.1 </span>A sample manifest</a></li>
       <li><a href="offline.html#writing-cache-manifests"><span class="secno">5.8.3.2 </span>Writing cache manifests</a></li>
       <li><a href="offline.html#parsing-cache-manifests"><span class="secno">5.8.3.3 </span>Parsing cache manifests</a></li></ol></li>
     <li><a href="offline.html#updating-an-application-cache"><span class="secno">5.8.4 </span>Updating an application cache</a></li>
     <li><a href="offline.html#matching-a-fallback-namespace"><span class="secno">5.8.5 </span>Matching a fallback namespace</a></li>
     <li><a href="offline.html#the-application-cache-selection-algorithm"><span class="secno">5.8.6 </span>The application cache selection algorithm</a>
      <ol><li><a href="offline.html#changesToNetworkingModel"><span class="secno">5.8.6.1 </span>Changes to the networking model</a></li></ol></li>
     <li><a href="offline.html#application-cache-api"><span class="secno">5.8.7 </span>Application cache API</a></li>
     <li><a href="offline.html#browser-state"><span class="secno">5.8.8 </span>Browser state</a></li></ol></li>
   <li><a href="history.html#history"><span class="secno">5.9 </span>Session history and navigation</a>
    <ol><li><a href="history.html#the-session-history-of-browsing-contexts"><span class="secno">5.9.1 </span>The session history of browsing contexts</a></li>
     <li><a href="history.html#the-history-interface"><span class="secno">5.9.2 </span>The <code>History</code> interface</a></li>
     <li><a href="history.html#activating-state-object-entries"><span class="secno">5.9.3 </span>Activating state object entries</a></li>
     <li><a href="history.html#the-location-interface"><span class="secno">5.9.4 </span>The <code>Location</code> interface</a>
      <ol><li><a href="history.html#security-3"><span class="secno">5.9.4.1 </span>Security</a></li></ol></li>
     <li><a href="history.html#history-notes"><span class="secno">5.9.5 </span>Implementation notes for session history</a></li></ol></li>
   <li><a href="history.html#browsing-the-web"><span class="secno">5.10 </span>Browsing the Web</a>
    <ol><li><a href="history.html#navigating-across-documents"><span class="secno">5.10.1 </span>Navigating across documents</a></li>
     <li><a href="history.html#read-html"><span class="secno">5.10.2 </span>Page load processing model for HTML files</a></li>
     <li><a href="history.html#read-xml"><span class="secno">5.10.3 </span>Page load processing model for XML files</a></li>
     <li><a href="history.html#read-text"><span class="secno">5.10.4 </span>Page load processing model for text files</a></li>
     <li><a href="history.html#read-image"><span class="secno">5.10.5 </span>Page load processing model for images</a></li>
     <li><a href="history.html#read-plugin"><span class="secno">5.10.6 </span>Page load processing model for content that uses plugins</a></li>
     <li><a href="history.html#read-ua-inline"><span class="secno">5.10.7 </span>Page load processing model for inline content that doesn't have a DOM</a></li>
     <li><a href="history.html#scroll-to-fragid"><span class="secno">5.10.8 </span>Navigating to a fragment identifier</a></li>
     <li><a href="history.html#history-traversal"><span class="secno">5.10.9 </span>History traversal</a></li>
     <li><a href="history.html#unloading-documents"><span class="secno">5.10.10 </span>Unloading documents</a>
      <ol><li><a href="history.html#event-definition"><span class="secno">5.10.10.1 </span>Event definition</a></li></ol></li></ol></li>
   <li><a href="structured-client-side-storage.html#structured-client-side-storage"><span class="secno">5.11 </span>Structured client-side storage</a>
    <ol><li><a href="structured-client-side-storage.html#storage"><span class="secno">5.11.1 </span>Storing name/value pairs</a>
      <ol><li><a href="structured-client-side-storage.html#introduction-2"><span class="secno">5.11.1.1 </span>Introduction</a></li>
       <li><a href="structured-client-side-storage.html#the-storage-interface"><span class="secno">5.11.1.2 </span>The <code>Storage</code> interface</a></li>
       <li><a href="structured-client-side-storage.html#the-sessionstorage-attribute"><span class="secno">5.11.1.3 </span>The <code title="dom-sessionStorage">sessionStorage</code> attribute</a></li>
       <li><a href="structured-client-side-storage.html#the-localstorage-attribute"><span class="secno">5.11.1.4 </span>The <code title="dom-localStorage">localStorage</code> attribute</a></li>
       <li><a href="structured-client-side-storage.html#the-storage-event"><span class="secno">5.11.1.5 </span>The <code title="event-storage">storage</code> event</a>
        <ol><li><a href="structured-client-side-storage.html#event-definition-0"><span class="secno">5.11.1.5.1 </span>Event definition</a></li></ol></li>
       <li><a href="structured-client-side-storage.html#threads"><span class="secno">5.11.1.6 </span>Threads</a></li></ol></li>
     <li><a href="structured-client-side-storage.html#sql"><span class="secno">5.11.2 </span>Database storage</a>
      <ol><li><a href="structured-client-side-storage.html#introduction-3"><span class="secno">5.11.2.1 </span>Introduction</a></li>
       <li><a href="structured-client-side-storage.html#databases"><span class="secno">5.11.2.2 </span>Databases</a></li>
       <li><a href="structured-client-side-storage.html#executing-sql-statements"><span class="secno">5.11.2.3 </span>Executing SQL statements</a></li>
       <li><a href="structured-client-side-storage.html#database-query-results"><span class="secno">5.11.2.4 </span>Database query results</a></li>
       <li><a href="structured-client-side-storage.html#errors"><span class="secno">5.11.2.5 </span>Errors</a></li>
       <li><a href="structured-client-side-storage.html#processing-model-2"><span class="secno">5.11.2.6 </span>Processing model</a></li></ol></li>
     <li><a href="structured-client-side-storage.html#disk-space"><span class="secno">5.11.3 </span>Disk space</a></li>
     <li><a href="structured-client-side-storage.html#privacy"><span class="secno">5.11.4 </span>Privacy</a>
      <ol><li><a href="structured-client-side-storage.html#user-tracking"><span class="secno">5.11.4.1 </span>User tracking</a></li>
       <li><a href="structured-client-side-storage.html#cookie-resurrection"><span class="secno">5.11.4.2 </span>Cookie resurrection</a></li></ol></li>
     <li><a href="structured-client-side-storage.html#security-4"><span class="secno">5.11.5 </span>Security</a>
      <ol><li><a href="structured-client-side-storage.html#dns-spoofing-attacks"><span class="secno">5.11.5.1 </span>DNS spoofing attacks</a></li>
       <li><a href="structured-client-side-storage.html#cross-directory-attacks"><span class="secno">5.11.5.2 </span>Cross-directory attacks</a></li>
       <li><a href="structured-client-side-storage.html#implementation-risks"><span class="secno">5.11.5.3 </span>Implementation risks</a></li>
       <li><a href="structured-client-side-storage.html#sql-and-user-agents"><span class="secno">5.11.5.4 </span>SQL and user agents</a></li>
       <li><a href="structured-client-side-storage.html#sql-injection"><span class="secno">5.11.5.5 </span>SQL injection</a></li></ol></li></ol></li>
   <li><a href="structured-client-side-storage.html#links"><span class="secno">5.12 </span>Links</a>
    <ol><li><a href="structured-client-side-storage.html#hyperlink-elements"><span class="secno">5.12.1 </span>Hyperlink elements</a></li>
     <li><a href="structured-client-side-storage.html#following-hyperlinks"><span class="secno">5.12.2 </span>Following hyperlinks</a>
      <ol><li><a href="structured-client-side-storage.html#hyperlink-auditing"><span class="secno">5.12.2.1 </span>Hyperlink auditing</a></li></ol></li>
     <li><a href="structured-client-side-storage.html#linkTypes"><span class="secno">5.12.3 </span>Link types</a>
      <ol><li><a href="structured-client-side-storage.html#link-type-alternate"><span class="secno">5.12.3.1 </span>Link type "<code>alternate</code>"</a></li>
       <li><a href="structured-client-side-storage.html#link-type-archives"><span class="secno">5.12.3.2 </span>Link type "<code>archives</code>"</a></li>
       <li><a href="structured-client-side-storage.html#link-type-author"><span class="secno">5.12.3.3 </span>Link type "<code>author</code>"</a></li>
       <li><a href="structured-client-side-storage.html#link-type-bookmark"><span class="secno">5.12.3.4 </span>Link type "<code>bookmark</code>"</a></li>
       <li><a href="structured-client-side-storage.html#link-type-external"><span class="secno">5.12.3.5 </span>Link type "<code>external</code>"</a></li>
       <li><a href="structured-client-side-storage.html#link-type-feed"><span class="secno">5.12.3.6 </span>Link type "<code>feed</code>"</a></li>
       <li><a href="structured-client-side-storage.html#link-type-help"><span class="secno">5.12.3.7 </span>Link type "<code>help</code>"</a></li>
       <li><a href="structured-client-side-storage.html#rel-icon"><span class="secno">5.12.3.8 </span>Link type "<code>icon</code>"</a></li>
       <li><a href="structured-client-side-storage.html#link-type-license"><span class="secno">5.12.3.9 </span>Link type "<code>license</code>"</a></li>
       <li><a href="structured-client-side-storage.html#link-type-nofollow"><span class="secno">5.12.3.10 </span>Link type "<code>nofollow</code>"</a></li>
       <li><a href="structured-client-side-storage.html#link-type-noreferrer"><span class="secno">5.12.3.11 </span>Link type "<code>noreferrer</code>"</a></li>
       <li><a href="structured-client-side-storage.html#link-type-pingback"><span class="secno">5.12.3.12 </span>Link type "<code>pingback</code>"</a></li>
       <li><a href="structured-client-side-storage.html#link-type-prefetch"><span class="secno">5.12.3.13 </span>Link type "<code>prefetch</code>"</a></li>
       <li><a href="structured-client-side-storage.html#link-type-search"><span class="secno">5.12.3.14 </span>Link type "<code>search</code>"</a></li>
       <li><a href="structured-client-side-storage.html#link-type-stylesheet"><span class="secno">5.12.3.15 </span>Link type "<code>stylesheet</code>"</a></li>
       <li><a href="structured-client-side-storage.html#link-type-sidebar"><span class="secno">5.12.3.16 </span>Link type "<code>sidebar</code>"</a></li>
       <li><a href="structured-client-side-storage.html#link-type-tag"><span class="secno">5.12.3.17 </span>Link type "<code>tag</code>"</a></li>
       <li><a href="structured-client-side-storage.html#hierarchical-link-types"><span class="secno">5.12.3.18 </span>Hierarchical link types</a>
        <ol><li><a href="structured-client-side-storage.html#link-type-index"><span class="secno">5.12.3.18.1 </span>Link type "<code>index</code>"</a></li>
         <li><a href="structured-client-side-storage.html#link-type-up"><span class="secno">5.12.3.18.2 </span>Link type "<code>up</code>"</a></li></ol></li>
       <li><a href="structured-client-side-storage.html#sequential-link-types"><span class="secno">5.12.3.19 </span>Sequential link types</a>
        <ol><li><a href="structured-client-side-storage.html#link-type-first"><span class="secno">5.12.3.19.1 </span>Link type "<code>first</code>"</a></li>
         <li><a href="structured-client-side-storage.html#link-type-last"><span class="secno">5.12.3.19.2 </span>Link type "<code>last</code>"</a></li>
         <li><a href="structured-client-side-storage.html#link-type-next"><span class="secno">5.12.3.19.3 </span>Link type "<code>next</code>"</a></li>
         <li><a href="structured-client-side-storage.html#link-type-prev"><span class="secno">5.12.3.19.4 </span>Link type "<code>prev</code>"</a></li></ol></li>
       <li><a href="structured-client-side-storage.html#other-link-types"><span class="secno">5.12.3.20 </span>Other link types</a></li></ol></li></ol></li></ol></li>
 <li><a href="editing.html#editing"><span class="secno">6 </span>User Interaction</a>
  <ol><li><a href="editing.html#editing-intro"><span class="secno">6.1 </span>Introduction</a></li>
   <li><a href="editing.html#the-hidden-attribute"><span class="secno">6.2 </span>The <code>hidden</code> attribute</a></li>
   <li><a href="editing.html#activation"><span class="secno">6.3 </span>Activation</a></li>
   <li><a href="editing.html#scrolling-elements-into-view"><span class="secno">6.4 </span>Scrolling elements into view</a></li>
   <li><a href="editing.html#focus"><span class="secno">6.5 </span>Focus</a>
    <ol><li><a href="editing.html#sequential-focus-navigation"><span class="secno">6.5.1 </span>Sequential focus navigation</a></li>
     <li><a href="editing.html#focus-management"><span class="secno">6.5.2 </span>Focus management</a></li>
     <li><a href="editing.html#document-level-focus-apis"><span class="secno">6.5.3 </span>Document-level focus APIs</a></li>
     <li><a href="editing.html#element-level-focus-apis"><span class="secno">6.5.4 </span>Element-level focus APIs</a></li></ol></li>
   <li><a href="editing.html#selection"><span class="secno">6.6 </span>The text selection APIs</a>
    <ol><li><a href="editing.html#documentSelection"><span class="secno">6.6.1 </span>APIs for the browsing context selection</a></li>
     <li><a href="editing.html#textFieldSelection"><span class="secno">6.6.2 </span>APIs for the text field selections</a></li></ol></li>
   <li><a href="editing.html#contenteditable"><span class="secno">6.7 </span>The <code title="attr-contenteditable">contenteditable</code> attribute</a>
    <ol><li><a href="editing.html#user-editing-actions"><span class="secno">6.7.1 </span>User editing actions</a></li>
     <li><a href="editing.html#making-entire-documents-editable"><span class="secno">6.7.2 </span>Making entire documents editable</a></li></ol></li>
   <li><a href="editing.html#dnd"><span class="secno">6.8 </span>Drag and drop</a>
    <ol><li><a href="editing.html#introduction-4"><span class="secno">6.8.1 </span>Introduction</a></li>
     <li><a href="editing.html#the-dragevent-and-datatransfer-interfaces"><span class="secno">6.8.2 </span>The <code>DragEvent</code> and <code>DataTransfer</code> interfaces</a></li>
     <li><a href="editing.html#events-fired-during-a-drag-and-drop-action"><span class="secno">6.8.3 </span>Events fired during a drag-and-drop action</a></li>
     <li><a href="editing.html#drag-and-drop-processing-model"><span class="secno">6.8.4 </span>Drag-and-drop processing model</a>
      <ol><li><a href="editing.html#when-the-drag-and-drop-operation-starts-or-ends-in-another-document"><span class="secno">6.8.4.1 </span>When the drag-and-drop operation starts or ends in another
  document</a></li>
       <li><a href="editing.html#when-the-drag-and-drop-operation-starts-or-ends-in-another-application"><span class="secno">6.8.4.2 </span>When the drag-and-drop operation starts or ends in another
  application</a></li></ol></li>
     <li><a href="editing.html#the-draggable-attribute"><span class="secno">6.8.5 </span>The <code>draggable</code> attribute</a></li>
     <li><a href="editing.html#copy-and-paste"><span class="secno">6.8.6 </span>Copy and paste</a>
      <ol><li><a href="editing.html#copy-to-clipboard"><span class="secno">6.8.6.1 </span>Copy to clipboard</a></li>
       <li><a href="editing.html#cut-to-clipboard"><span class="secno">6.8.6.2 </span>Cut to clipboard</a></li>
       <li><a href="editing.html#paste-from-clipboard"><span class="secno">6.8.6.3 </span>Paste from clipboard</a></li>
       <li><a href="editing.html#paste-from-selection"><span class="secno">6.8.6.4 </span>Paste from selection</a></li></ol></li>
     <li><a href="editing.html#security-risks-in-the-drag-and-drop-model"><span class="secno">6.8.7 </span>Security risks in the drag-and-drop model</a></li></ol></li>
   <li><a href="editing.html#undo"><span class="secno">6.9 </span>Undo history</a>
    <ol><li><a href="editing.html#the-undomanager-interface"><span class="secno">6.9.1 </span>The <code>UndoManager</code> interface</a></li>
     <li><a href="editing.html#undo:-moving-back-in-the-undo-transaction-history"><span class="secno">6.9.2 </span>Undo: moving back in the undo transaction history</a></li>
     <li><a href="editing.html#redo:-moving-forward-in-the-undo-transaction-history"><span class="secno">6.9.3 </span>Redo: moving forward in the undo transaction history</a></li>
     <li><a href="editing.html#the-undomanagerevent-interface-and-the-undo-and-redo-events"><span class="secno">6.9.4 </span>The <code>UndoManagerEvent</code> interface and the <code title="event-undo">undo</code> and <code title="event-redo">redo</code> events</a></li>
     <li><a href="editing.html#implementation-notes"><span class="secno">6.9.5 </span>Implementation notes</a></li></ol></li>
   <li><a href="editing.html#command-apis"><span class="secno">6.10 </span>Command APIs</a></li></ol></li>
 <li><a href="comms.html#comms"><span class="secno">7 </span>Communication</a>
  <ol><li><a href="comms.html#event-definitions"><span class="secno">7.1 </span>Event definitions</a></li>
   <li><a href="comms.html#server-sent-events"><span class="secno">7.2 </span>Server-sent events</a>
    <ol><li><a href="comms.html#the-remoteeventtarget-interface"><span class="secno">7.2.1 </span>The <code>RemoteEventTarget</code> interface</a></li>
     <li><a href="comms.html#connecting-to-an-event-stream"><span class="secno">7.2.2 </span>Connecting to an event stream</a></li>
     <li><a href="comms.html#parsing-an-event-stream"><span class="secno">7.2.3 </span>Parsing an event stream</a></li>
     <li><a href="comms.html#event-stream-interpretation"><span class="secno">7.2.4 </span>Interpreting an event stream</a></li>
     <li><a href="comms.html#notes"><span class="secno">7.2.5 </span>Notes</a></li></ol></li>
   <li><a href="comms.html#network"><span class="secno">7.3 </span>Web sockets</a>
    <ol><li><a href="comms.html#network-intro"><span class="secno">7.3.1 </span>Introduction</a></li>
     <li><a href="comms.html#the-websocket-interface"><span class="secno">7.3.2 </span>The <code>WebSocket</code> interface</a></li>
     <li><a href="comms.html#websocket-events"><span class="secno">7.3.3 </span>WebSocket Events</a></li>
     <li><a href="comms.html#feedback-from-the-protocol"><span class="secno">7.3.4 </span>Feedback from the protocol</a></li>
     <li><a href="comms.html#websocket-protocol" title="This protocol enables two-way
  communication between a user agent running untrusted code running in
  a controlled environment to a remote host that understands the
  protocol. It is intended to fail to communicate with servers of
  pre-existing protocols like SMTP or HTTP, while allowing HTTP
  servers to opt-in to supporting this protocol if desired. It is
  designed to be easy to implement on the server side."><span class="secno">7.3.5 </span>The Web Socket
  protocol</a>
      <ol><li><a href="comms.html#introduction-5"><span class="secno">7.3.5.1 </span>Introduction</a></li>
       <li><a href="comms.html#client-side-requirements"><span class="secno">7.3.5.2 </span>Client-side requirements</a>
        <ol><li><a href="comms.html#handshake"><span class="secno">7.3.5.2.1 </span>Handshake</a></li>
         <li><a href="comms.html#data-framing"><span class="secno">7.3.5.2.2 </span>Data framing</a></li></ol></li>
       <li><a href="comms.html#server-side-requirements"><span class="secno">7.3.5.3 </span>Server-side requirements</a>
        <ol><li><a href="comms.html#minimal-handshake"><span class="secno">7.3.5.3.1 </span>Minimal handshake</a></li>
         <li><a href="comms.html#handshake-details"><span class="secno">7.3.5.3.2 </span>Handshake details</a></li>
         <li><a href="comms.html#ws-sd-framing"><span class="secno">7.3.5.3.3 </span>Data framing</a></li></ol></li>
       <li><a href="comms.html#closing-the-connection"><span class="secno">7.3.5.4 </span>Closing the connection</a></li>
       <li><a href="comms.html#security-considerations"><span class="secno">7.3.5.5 </span>Security considerations</a></li>
       <li><a href="comms.html#iana-considerations"><span class="secno">7.3.5.6 </span>IANA considerations</a></li></ol></li></ol></li>
   <li><a href="comms.html#crossDocumentMessages"><span class="secno">7.4 </span>Cross-document messaging</a>
    <ol><li><a href="comms.html#introduction-6"><span class="secno">7.4.1 </span>Introduction</a></li>
     <li><a href="comms.html#security-5"><span class="secno">7.4.2 </span>Security</a>
      <ol><li><a href="comms.html#authors"><span class="secno">7.4.2.1 </span>Authors</a></li>
       <li><a href="comms.html#user-agents"><span class="secno">7.4.2.2 </span>User agents</a></li></ol></li>
     <li><a href="comms.html#posting-messages"><span class="secno">7.4.3 </span>Posting messages</a></li>
     <li><a href="comms.html#posting-messages-with-message-ports"><span class="secno">7.4.4 </span>Posting messages with message ports</a></li></ol></li>
   <li><a href="comms.html#channel-messaging"><span class="secno">7.5 </span>Channel messaging</a>
    <ol><li><a href="comms.html#introduction-7"><span class="secno">7.5.1 </span>Introduction</a></li>
     <li><a href="comms.html#message-channels"><span class="secno">7.5.2 </span>Message channels</a></li>
     <li><a href="comms.html#message-ports"><span class="secno">7.5.3 </span>Message ports</a>
      <ol><li><a href="comms.html#ports-and-garbage-collection"><span class="secno">7.5.3.1 </span>Ports and garbage collection</a></li></ol></li></ol></li></ol></li>
 <li><a href="syntax.html#syntax"><span class="secno">8 </span>The HTML syntax</a>
  <ol><li><a href="syntax.html#writing-html-documents"><span class="secno">8.1 </span>Writing HTML documents</a>
    <ol><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>
      <ol><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"><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 CDATA and RCDATA elements</a></li></ol></li>
     <li><a href="syntax.html#text-0"><span class="secno">8.1.3 </span>Text</a>
      <ol><li><a href="syntax.html#newlines"><span class="secno">8.1.3.1 </span>Newlines</a></li></ol></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></li></ol></li>
   <li><a href="parsing.html#parsing"><span class="secno">8.2 </span>Parsing HTML documents</a>
    <ol><li><a href="parsing.html#overview-of-the-parsing-model"><span class="secno">8.2.1 </span>Overview of the parsing model</a></li>
     <li><a href="parsing.html#the-input-stream"><span class="secno">8.2.2 </span>The input stream</a>
      <ol><li><a href="parsing.html#determining-the-character-encoding"><span class="secno">8.2.2.1 </span>Determining the character encoding</a></li>
       <li><a href="parsing.html#character-encoding-requirements"><span class="secno">8.2.2.2 </span>Character encoding requirements</a></li>
       <li><a href="parsing.html#preprocessing-the-input-stream"><span class="secno">8.2.2.3 </span>Preprocessing the input stream</a></li>
       <li><a href="parsing.html#changing-the-encoding-while-parsing"><span class="secno">8.2.2.4 </span>Changing the encoding while parsing</a></li></ol></li>
     <li><a href="parsing.html#parse-state"><span class="secno">8.2.3 </span>Parse state</a>
      <ol><li><a href="parsing.html#the-insertion-mode"><span class="secno">8.2.3.1 </span>The insertion mode</a></li>
       <li><a href="parsing.html#the-stack-of-open-elements"><span class="secno">8.2.3.2 </span>The stack of open elements</a></li>
       <li><a href="parsing.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="parsing.html#the-element-pointers"><span class="secno">8.2.3.4 </span>The element pointers</a></li>
       <li><a href="parsing.html#other-parsing-state-flags"><span class="secno">8.2.3.5 </span>Other parsing state flags</a></li></ol></li>
     <li><a href="tokenization.html#tokenization"><span class="secno">8.2.4 </span>Tokenization</a>
      <ol><li><a href="tokenization.html#data-state"><span class="secno">8.2.4.1 </span>Data state</a></li>
       <li><a href="tokenization.html#character-reference-data-state"><span class="secno">8.2.4.2 </span>Character reference data state</a></li>
       <li><a href="tokenization.html#tag-open-state"><span class="secno">8.2.4.3 </span>Tag open state</a></li>
       <li><a href="tokenization.html#close-tag-open-state"><span class="secno">8.2.4.4 </span>Close tag open state</a></li>
       <li><a href="tokenization.html#tag-name-state"><span class="secno">8.2.4.5 </span>Tag name state</a></li>
       <li><a href="tokenization.html#before-attribute-name-state"><span class="secno">8.2.4.6 </span>Before attribute name state</a></li>
       <li><a href="tokenization.html#attribute-name-state"><span class="secno">8.2.4.7 </span>Attribute name state</a></li>
       <li><a href="tokenization.html#after-attribute-name-state"><span class="secno">8.2.4.8 </span>After attribute name state</a></li>
       <li><a href="tokenization.html#before-attribute-value-state"><span class="secno">8.2.4.9 </span>Before attribute value state</a></li>
       <li><a href="tokenization.html#attribute-value-double-quoted-state"><span class="secno">8.2.4.10 </span>Attribute value (double-quoted) state</a></li>
       <li><a href="tokenization.html#attribute-value-single-quoted-state"><span class="secno">8.2.4.11 </span>Attribute value (single-quoted) state</a></li>
       <li><a href="tokenization.html#attribute-value-unquoted-state"><span class="secno">8.2.4.12 </span>Attribute value (unquoted) state</a></li>
       <li><a href="tokenization.html#character-reference-in-attribute-value-state"><span class="secno">8.2.4.13 </span>Character reference in attribute value state</a></li>
       <li><a href="tokenization.html#after-attribute-value-quoted-state"><span class="secno">8.2.4.14 </span>After attribute value (quoted) state</a></li>
       <li><a href="tokenization.html#self-closing-start-tag-state"><span class="secno">8.2.4.15 </span>Self-closing start tag state</a></li>
       <li><a href="tokenization.html#bogus-comment-state"><span class="secno">8.2.4.16 </span>Bogus comment state</a></li>
       <li><a href="tokenization.html#markup-declaration-open-state"><span class="secno">8.2.4.17 </span>Markup declaration open state</a></li>
       <li><a href="tokenization.html#comment-start-state"><span class="secno">8.2.4.18 </span>Comment start state</a></li>
       <li><a href="tokenization.html#comment-start-dash-state"><span class="secno">8.2.4.19 </span>Comment start dash state</a></li>
       <li><a href="tokenization.html#comment-state"><span class="secno">8.2.4.20 </span>Comment state</a></li>
       <li><a href="tokenization.html#comment-end-dash-state"><span class="secno">8.2.4.21 </span>Comment end dash state</a></li>
       <li><a href="tokenization.html#comment-end-state"><span class="secno">8.2.4.22 </span>Comment end state</a></li>
       <li><a href="tokenization.html#doctype-state"><span class="secno">8.2.4.23 </span>DOCTYPE state</a></li>
       <li><a href="tokenization.html#before-doctype-name-state"><span class="secno">8.2.4.24 </span>Before DOCTYPE name state</a></li>
       <li><a href="tokenization.html#doctype-name-state"><span class="secno">8.2.4.25 </span>DOCTYPE name state</a></li>
       <li><a href="tokenization.html#after-doctype-name-state"><span class="secno">8.2.4.26 </span>After DOCTYPE name state</a></li>
       <li><a href="tokenization.html#before-doctype-public-identifier-state"><span class="secno">8.2.4.27 </span>Before DOCTYPE public identifier state</a></li>
       <li><a href="tokenization.html#doctype-public-identifier-double-quoted-state"><span class="secno">8.2.4.28 </span>DOCTYPE public identifier (double-quoted) state</a></li>
       <li><a href="tokenization.html#doctype-public-identifier-single-quoted-state"><span class="secno">8.2.4.29 </span>DOCTYPE public identifier (single-quoted) state</a></li>
       <li><a href="tokenization.html#after-doctype-public-identifier-state"><span class="secno">8.2.4.30 </span>After DOCTYPE public identifier state</a></li>
       <li><a href="tokenization.html#before-doctype-system-identifier-state"><span class="secno">8.2.4.31 </span>Before DOCTYPE system identifier state</a></li>
       <li><a href="tokenization.html#doctype-system-identifier-double-quoted-state"><span class="secno">8.2.4.32 </span>DOCTYPE system identifier (double-quoted) state</a></li>
       <li><a href="tokenization.html#doctype-system-identifier-single-quoted-state"><span class="secno">8.2.4.33 </span>DOCTYPE system identifier (single-quoted) state</a></li>
       <li><a href="tokenization.html#after-doctype-system-identifier-state"><span class="secno">8.2.4.34 </span>After DOCTYPE system identifier state</a></li>
       <li><a href="tokenization.html#bogus-doctype-state"><span class="secno">8.2.4.35 </span>Bogus DOCTYPE state</a></li>
       <li><a href="tokenization.html#cdata-section-state"><span class="secno">8.2.4.36 </span>CDATA section state</a></li>
       <li><a href="tokenization.html#tokenizing-character-references"><span class="secno">8.2.4.37 </span>Tokenizing character references</a></li></ol></li>
     <li><a href="tree-construction.html#tree-construction"><span class="secno">8.2.5 </span>Tree construction</a>
      <ol><li><a href="tree-construction.html#creating-and-inserting-elements"><span class="secno">8.2.5.1 </span>Creating and inserting elements</a></li>
       <li><a href="tree-construction.html#closing-elements-that-have-implied-end-tags"><span class="secno">8.2.5.2 </span>Closing elements that have implied end tags</a></li>
       <li><a href="tree-construction.html#foster-parenting"><span class="secno">8.2.5.3 </span>Foster parenting</a></li>
       <li><a href="tree-construction.html#the-initial-insertion-mode"><span class="secno">8.2.5.4 </span>The "initial" insertion mode</a></li>
       <li><a href="tree-construction.html#the-before-html-insertion-mode"><span class="secno">8.2.5.5 </span>The "before html" insertion mode</a></li>
       <li><a href="tree-construction.html#the-before-head-insertion-mode"><span class="secno">8.2.5.6 </span>The "before head" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-inhead"><span class="secno">8.2.5.7 </span>The "in head" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-inheadnoscript"><span class="secno">8.2.5.8 </span>The "in head noscript" insertion mode</a></li>
       <li><a href="tree-construction.html#the-after-head-insertion-mode"><span class="secno">8.2.5.9 </span>The "after head" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-inbody"><span class="secno">8.2.5.10 </span>The "in body" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-incdata"><span class="secno">8.2.5.11 </span>The "in CDATA/RCDATA" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-intable"><span class="secno">8.2.5.12 </span>The "in table" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-incaption"><span class="secno">8.2.5.13 </span>The "in caption" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-incolgroup"><span class="secno">8.2.5.14 </span>The "in column group" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-intbody"><span class="secno">8.2.5.15 </span>The "in table body" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-intr"><span class="secno">8.2.5.16 </span>The "in row" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-intd"><span class="secno">8.2.5.17 </span>The "in cell" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-inselect"><span class="secno">8.2.5.18 </span>The "in select" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-inselectintable"><span class="secno">8.2.5.19 </span>The "in select in table" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-inforeign"><span class="secno">8.2.5.20 </span>The "in foreign content" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-afterbody"><span class="secno">8.2.5.21 </span>The "after body" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-inframeset"><span class="secno">8.2.5.22 </span>The "in frameset" insertion mode</a></li>
       <li><a href="tree-construction.html#parsing-main-afterframeset"><span class="secno">8.2.5.23 </span>The "after frameset" insertion mode</a></li>
       <li><a href="tree-construction.html#the-after-after-body-insertion-mode"><span class="secno">8.2.5.24 </span>The "after after body" insertion mode</a></li>
       <li><a href="tree-construction.html#the-after-after-frameset-insertion-mode"><span class="secno">8.2.5.25 </span>The "after after frameset" insertion mode</a></li></ol></li>
     <li><a href="tree-construction.html#the-end"><span class="secno">8.2.6 </span>The end</a></li>
     <li><a href="tree-construction.html#coercing-an-html-dom-into-an-infoset"><span class="secno">8.2.7 </span>Coercing an HTML DOM into an infoset</a></li></ol></li>
   <li><a href="tree-construction.html#namespaces"><span class="secno">8.3 </span>Namespaces</a></li>
   <li><a href="serializing-html-fragments.html#serializing-html-fragments"><span class="secno">8.4 </span>Serializing HTML fragments</a></li>
   <li><a href="serializing-html-fragments.html#parsing-html-fragments"><span class="secno">8.5 </span>Parsing HTML fragments</a></li>
   <li><a href="named-character-references.html#named-character-references"><span class="secno">8.6 </span>Named character references</a></li></ol></li>
 <li><a href="the-xhtml-syntax.html#the-xhtml-syntax"><span class="secno">9 </span>The XHTML syntax</a>
  <ol><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></li></ol></li>
 <li><a href="rendering.html#rendering"><span class="secno">10 </span>Rendering</a>
  <ol><li><a href="rendering.html#introduction-8"><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>
    <ol><li><a href="rendering.html#introduction-9"><span class="secno">10.2.1 </span>Introduction</a></li>
     <li><a href="rendering.html#display-types"><span class="secno">10.2.2 </span>Display types</a></li>
     <li><a href="rendering.html#margins-and-padding"><span class="secno">10.2.3 </span>Margins and padding</a></li>
     <li><a href="rendering.html#alignment"><span class="secno">10.2.4 </span>Alignment</a></li>
     <li><a href="rendering.html#fonts-and-colors"><span class="secno">10.2.5 </span>Fonts and colors</a></li>
     <li><a href="rendering.html#punctuation-and-decorations"><span class="secno">10.2.6 </span>Punctuation and decorations</a></li>
     <li><a href="rendering.html#resetting-rules-for-inherited-properties"><span class="secno">10.2.7 </span>Resetting rules for inherited properties</a></li>
     <li><a href="rendering.html#the-hr-element-0"><span class="secno">10.2.8 </span>The <code>hr</code> element</a></li>
     <li><a href="rendering.html#the-fieldset-element-0"><span class="secno">10.2.9 </span>The <code>fieldset</code> element</a></li></ol></li>
   <li><a href="rendering.html#replaced-elements"><span class="secno">10.3 </span>Replaced elements</a>
    <ol><li><a href="rendering.html#embedded-content-1"><span class="secno">10.3.1 </span>Embedded content</a></li>
     <li><a href="rendering.html#images-0"><span class="secno">10.3.2 </span>Images</a></li>
     <li><a href="rendering.html#attributes-for-embedded-content-and-images"><span class="secno">10.3.3 </span>Attributes for embedded content and images</a></li>
     <li><a href="rendering.html#image-maps-0"><span class="secno">10.3.4 </span>Image maps</a></li>
     <li><a href="rendering.html#tool-bars-0"><span class="secno">10.3.5 </span>Tool bars</a></li></ol></li>
   <li><a href="rendering.html#bindings"><span class="secno">10.4 </span>Bindings</a>
    <ol><li><a href="rendering.html#introduction-10"><span class="secno">10.4.1 </span>Introduction</a></li>
     <li><a href="rendering.html#the-bb-element-0"><span class="secno">10.4.2 </span>The <code>bb</code> element</a></li>
     <li><a href="rendering.html#the-button-element-0"><span class="secno">10.4.3 </span>The <code>button</code> element</a></li>
     <li><a href="rendering.html#the-datagrid-element"><span class="secno">10.4.4 </span>The <code>datagrid</code> element</a></li>
     <li><a href="rendering.html#the-details-element-0"><span class="secno">10.4.5 </span>The <code>details</code> element</a></li>
     <li><a href="rendering.html#the-input-element-as-a-text-entry-widget"><span class="secno">10.4.6 </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">10.4.7 </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">10.4.8 </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">10.4.9 </span>The <code>input</code> element as a color well</a></li>
     <li><a href="rendering.html#the-input-element-as-a-check-box-and-radio-button-widgets"><span class="secno">10.4.10 </span>The <code>input</code> element as a check box and radio button widgets</a></li>
     <li><a href="rendering.html#the-input-element-as-a-file-upload-control"><span class="secno">10.4.11 </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">10.4.12 </span>The <code>input</code> element as a button</a></li>
     <li><a href="rendering.html#the-marquee-element"><span class="secno">10.4.13 </span>The <code>marquee</code> element</a></li>
     <li><a href="rendering.html#the-meter-element-0"><span class="secno">10.4.14 </span>The <code>meter</code> element</a></li>
     <li><a href="rendering.html#the-progress-element-0"><span class="secno">10.4.15 </span>The <code>progress</code> element</a></li>
     <li><a href="rendering.html#the-select-element-0"><span class="secno">10.4.16 </span>The <code>select</code> element</a></li>
     <li><a href="rendering.html#the-textarea-element-0"><span class="secno">10.4.17 </span>The <code>textarea</code> element</a></li></ol></li>
   <li><a href="rendering.html#frames-and-framesets"><span class="secno">10.5 </span>Frames and framesets</a></li>
   <li><a href="rendering.html#interactive-media"><span class="secno">10.6 </span>Interactive media</a>
    <ol><li><a href="rendering.html#links-forms-and-navigation"><span class="secno">10.6.1 </span>Links, forms, and navigation</a></li>
     <li><a href="rendering.html#the-mark-element-0"><span class="secno">10.6.2 </span>The <code>mark</code> element</a></li>
     <li><a href="rendering.html#the-title-attribute-0"><span class="secno">10.6.3 </span>The <code title="attr-title">title</code> attribute</a></li></ol></li>
   <li><a href="rendering.html#print-media"><span class="secno">10.7 </span>Print media</a></li>
   <li><a href="rendering.html#interaction-with-css"><span class="secno">10.8 </span>Interaction with CSS</a></li></ol></li>
 <li><a href="obsolete-features.html#obsolete-features"><span class="secno">11 </span>Obsolete features</a>
  <ol><li><a href="obsolete-features.html#self-contained-features"><span class="secno">11.1 </span>Self-contained features</a>
    <ol><li><a href="obsolete-features.html#the-applet-element"><span class="secno">11.1.1 </span>The <code>applet</code> element</a></li>
     <li><a href="obsolete-features.html#the-marquee-element-0"><span class="secno">11.1.2 </span>The <code>marquee</code> element</a></li></ol></li>
   <li><a href="obsolete-features.html#other-elements-and-attributes"><span class="secno">11.2 </span>Other elements and attributes</a></li>
   <li><a href="obsolete-features.html#other-dom-apis"><span class="secno">11.3 </span>Other DOM APIs</a></li>
   <li><a href="obsolete-features.html#conformance-checkers-0"><span class="secno">11.4 </span>Conformance checkers</a></li></ol></li>
 <li><a href="no.html#no"><span class="secno">12 </span>Things that you can't do with this specification because
  they are better handled using other technologies that are further
  described herein</a>
  <ol><li><a href="no.html#localization"><span class="secno">12.1 </span>Localization</a></li>
   <li><a href="no.html#declarative-2d-vector-graphics-and-animation"><span class="secno">12.2 </span>Declarative 2D vector graphics and animation</a></li>
   <li><a href="no.html#declarative-3d-scenes"><span class="secno">12.3 </span>Declarative 3D scenes</a></li>
   <li><a href="no.html#timers"><span class="secno">12.4 </span>Timers</a></li>
   <li><a href="no.html#rendering-and-the-dom"><span class="secno">12.5 </span>Rendering and the DOM</a></li></ol></li>
 <li><a class="no-num" href="index.html#index">Index</a></li>
 <li><a class="no-num" href="references.html#references">References</a></li>
 <li><a class="no-num" href="acknowledgements.html#acknowledgements">Acknowledgements</a></li></ol><!--end-toc--></body></html>