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Date: Wed, 10 Apr 2013 19:49:17 +0000
Message-Id: <E1UQ11B-0002dZ-6Q@gil.w3.org>
To: public-multilingualweb-lt-commits@w3.org
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  <div class="head">
    <p><a href="http://www.w3.org/"><img src="http://www.w3.org/Icons/w3c_home" alt="W3C"
    height="48" width="72" /></a></p>

    <h1><a name="title" id="title"></a> Internationalization Tag Set (ITS) Version
    2.0</h1>

    <h2><a name="w3c-doctype" id="w3c-doctype"></a> W3C Working Draft <del class=
    "diff-old">06 December 2012</del> <ins class="diff-chg">11 April 2013</ins></h2>

    <dl>
      <dt>This version:</dt>

      <dd>
        <del class="diff-old">http://www.w3.org/TR/2012/WD-its20-20121206/</del> <a href=
        "http://www.w3.org/TR/2013/WD-its20-20130411/"><ins class=
        "diff-chg">http://www.w3.org/TR/2013/WD-its20-20130411/</ins></a>
      </dd>

      <dt>Latest version:</dt>

      <dd><a href="http://www.w3.org/TR/its20/">http://www.w3.org/TR/its20/</a></dd>

      <dt>Previous version:</dt>

      <dd>
        <del class="diff-old">http://www.w3.org/TR/2012/WD-its20-20121023/</del> <a href=
        "http://www.w3.org/TR/2012/WD-its20-20121206/"><ins class=
        "diff-chg">http://www.w3.org/TR/2012/WD-its20-20121206/</ins></a>
      </dd>

      <dt>Editors:</dt>

      <dd>Shaun McCane, Invited Expert</dd>

      <dd>Dave Lewis, TCD</dd>

      <dd>
        <ins class="diff-new">Christian Lieske, SAP AG</ins>
      </dd>

      <dd>Arle Lommel, DFKI</dd>

      <dd>Jirka Kosek, UEP</dd>

      <dd>Felix Sasaki, DFKI / W3C Fellow</dd>

      <dd>Yves Savourel, ENLASO</dd>
    </dl>

    <p>This document is also available in these non-normative formats: <a href=
    "its20.odd">ODD/XML document</a> , <a href="itstagset20.zip">self-contained zipped
    archive</a> , and <a href="diffs/diff-wd20130411-wd20121206.html">XHTML Diff markup
    to previous publication <del class="diff-old">2012-10-23</del> <ins class=
    "diff-chg">2012-12-06</ins></a> .</p>

    <p class="copyright"><a href=
    "http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a> © <del class=
    "diff-old">2012</del> <ins class="diff-chg">2013</ins> <a href=
    "http://www.w3.org/"><acronym title="World Wide Web Consortium">W3C</acronym></a>
    <sup>®</sup> ( <a href="http://www.csail.mit.edu/"><acronym title=
    "Massachusetts Institute of Technology">MIT</acronym></a> , <a href=
    "http://www.ercim.eu/"><acronym title=
    "European Research Consortium for Informatics and Mathematics">ERCIM</acronym></a> ,
    <a href="http://www.keio.ac.jp/">Keio</a> , <a href=
    "http://ev.buaa.edu.cn/"><ins class="diff-new">Beihang</ins></a> ), All Rights
    Reserved. W3C <a href=
    "http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a> ,
    <a href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">trademark</a>
    and <a href="http://www.w3.org/Consortium/Legal/copyright-documents">document use</a>
    rules apply.</p>
  </div>
  <hr />

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

    <p><del class="diff-old">This</del> <ins class="diff-chg">The technology described in
    this</ins> document <del class="diff-old">defines data categories and their
    implementation as a set of elements and attributes called</del> <ins class=
    "diff-chg">-</ins> the <em>Internationalization Tag Set (ITS) <ins class=
    "diff-new">2.0</ins></em> <del class="diff-old">2.0.</del> <ins class="diff-chg">-
    enhances the foundation to integrate automated processing of human language into core
    Web technologies.</ins> ITS 2.0 <ins class="diff-new">bears many commonalities
    with</ins> is <del class="diff-old">the successor of</del> <ins class=
    "diff-chg">predecessor,</ins> <a href=
    "http://www.w3.org/TR/2007/REC-its-20070403/">ITS 1.0</a> <del class="diff-old">; it
    is</del> <ins class="diff-chg">but provides additional concepts that are</ins>
    designed to foster the <ins class="diff-new">automated</ins> creation <ins class=
    "diff-new">and processing</ins> of multilingual Web <del class="diff-old">content,
    focusing</del> <ins class="diff-chg">content. ITS 2.0 focuses</ins> on HTML,
    <del class="diff-old">XML based</del> <ins class="diff-chg">XML-based</ins> formats
    in general, and <del class="diff-old">to</del> <ins class="diff-chg">can</ins>
    leverage <del class="diff-old">localization workflows</del> <ins class=
    "diff-chg">processing</ins> based on the XML Localization Interchange File Format
    <del class="diff-old">(XLIFF).</del> <ins class="diff-chg">(XLIFF), as well as the
    Natural Language Processing Interchange Format (NIF).</ins></p>
  </div>

  <div>
    <h2><a name="status" id="status"></a> Status of this Document</h2>

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

    <p><del class="diff-old">This</del> <ins class="diff-chg">The technology described in
    this</ins> document <del class="diff-old">defines data categories and their
    implementation as a set of elements and attributes called</del> <ins class=
    "diff-chg">-</ins> the <em>Internationalization Tag Set (ITS) <ins class=
    "diff-new">2.0</ins></em> <del class="diff-old">2.0.</del> <ins class="diff-chg">-
    enhances the foundation to integrate automated processing of human language into core
    Web technologies.</ins> ITS 2.0 <ins class="diff-new">bears many commonalities
    with</ins> is <del class="diff-old">the successor of</del> <ins class=
    "diff-chg">predecessor,</ins> <a href=
    "http://www.w3.org/TR/2007/REC-its-20070403/">ITS 1.0</a> <del class="diff-old">; it
    is</del> <ins class="diff-chg">but provides additional concepts that are</ins>
    designed to foster the <ins class="diff-new">automated</ins> creation <ins class=
    "diff-new">and processing</ins> of multilingual Web <del class="diff-old">content,
    focusing</del> <ins class="diff-chg">content. ITS 2.0 focuses</ins> on HTML,
    <del class="diff-old">XML based</del> <ins class="diff-chg">XML-based</ins> formats
    in general, and <del class="diff-old">to</del> <ins class="diff-chg">can</ins>
    leverage <del class="diff-old">localization workflows</del> <ins class=
    "diff-chg">processing</ins> based on the XML Localization Interchange File Format
    <del class="diff-old">(XLIFF).</del> <ins class="diff-chg">(XLIFF), as well as the
    Natural Language Processing Interchange Format (NIF).</ins></p>

    <p>This document was published by the <a href=
    "http://www.w3.org/International/multilingualweb/lt/">MultilingualWeb-LT Working
    Group</a> as <del class="diff-old">a</del> <ins class="diff-chg">an updated working
    draft. The publication reflects changes made since the</ins> <a href=
    "http://www.w3.org/TR/2012/WD-its20-20121206/">Last Call <del class=
    "diff-old">Working Draft.</del></a> <ins class="diff-chg">publication 6 November
    2012.</ins> The Working Group expects to advance this Working Draft to Recommendation
    status (see <a href=
    "http://www.w3.org/2004/02/Process-20040205/tr.html#maturity-levels">W3C document
    maturity levels</a> ). <del class="diff-old">The Last Call period ends 10 January
    2013.</del></p><del class="diff-old">The</del>

    <p id="open-issues"><ins class="diff-chg">All</ins> <a href=
    "http://services.w3.org/xslt?xslfile=http%3A%2F%2Fwww.w3.org%2FInternational%2Fmultilingualweb%2Flt%2Fdrafts%2Fits20%2Ftools%2Fxslt%2Fdisco-for-its20.xsl&amp;xmlfile=https%3A%2F%2Fwww.w3.org%2FInternational%2Fmultilingualweb%2Flt%2Ftrack%2Fapi%2Fdump%3Ffull&amp;content-type=&amp;submit=transform">
    <ins class="diff-chg">last call issues</ins></a> <ins class="diff-chg">in the</ins>
    normative sections <del class="diff-old">of this document</del> (from <a class=
    "section-ref" href="#notation-terminology">Section 3:&nbsp;Notation and
    Terminology</a> to <a class="section-ref" href="#datacategory-description">Section
    8:&nbsp;Description of Data Categories</a> and <a class="section-ref" href=
    "#normative-references">Appendix A:&nbsp;References</a> to <a class="section-ref"
    href="#its-schemas">Appendix D:&nbsp;Schemas for ITS</a> ) <del class="diff-old">are
    stable.</del> <ins class="diff-chg">have been resolved, with</ins> <a href=
    "#unresolved-issues"><ins class="diff-chg">four exceptions</ins></a> . The other,
    non-normative sections contain only explanatory material and will be updated in a
    later working draft. <del class="diff-old">Hence, the</del> <ins class=
    "diff-chg">The</ins> Working Group <del class="diff-old">especially</del> encourages
    feedback <ins class="diff-new">until end of April 2013</ins> on the <del class=
    "diff-old">normative sections. The goal is to move out of last call without any
    substantive changes to these sections.</del> <a href="#unresolved-issues"><ins class=
    "diff-chg">unresolved issues</ins></a> .</p>

    <p>To give feedback send your comments to <a href=
    "mailto:public-multilingualweb-lt-comments@w3.org">public-multilingualweb-lt-comments@w3.org</a>
    . Use "Comment on ITS 2.0 specification WD" in the subject line of your email. The
    <a href=
    "http://lists.w3.org/Archives/Public/public-multilingualweb-lt-comments/">archives
    for this list</a> are publicly available. See also <a href=
    "https://www.w3.org/International/multilingualweb/lt/track/issues/">issues discussed
    within the Working Group</a> and the <a href="#changelog-since-20121023">list of
    changes since the previous publication</a> .</p>

    <p>Publication as a Working Draft does not imply endorsement by the W3C Membership.
    This is a draft document and may be updated, replaced or obsoleted by other documents
    at any time. It is inappropriate to cite this document as other than work in
    progress.</p>

    <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/53116/status">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>
  </div>

  <div class="toc">
    <h2><a name="contents" id="contents"></a> Table of Contents</h2>

    <div class="toc">
      <div class="toc1">
        1 <a href="#introduction">Introduction</a>

        <div class="toc2">
          1.1 <a href="#relation-to-its10-and-new-principles">Relation to ITS 1.0 and New
          Principles</a>

          <div class="toc3">
            1.1.1 <a href="#relation-to-its10">Relation to ITS 1.0</a>
          </div>

          <div class="toc3">
            1.1.2 <a href="#new-principles">New Principles</a>
          </div>
        </div>

        <div class="toc2">
          1.2 <a href="#motivation-its">Motivation for ITS</a>

          <div class="toc3">
            1.2.1 <a href="#motivation-its-issues">Typical Problems</a>
          </div>
        </div>

        <div class="toc2">
          1.3 <a href="#users-usage">Users and Usages of ITS</a>

          <div class="toc3">
            1.3.1 <a href="#potential-users">Potential Users of ITS</a>
          </div>

          <div class="toc3">
            1.3.2 <a href="#ways-to-use-its">Ways to Use ITS</a>
          </div>
        </div>

        <div class="toc2">
          1.4 <a href="#usage-in-html5">Usage in HTML</a>

          <div class="toc3">
            1.4.1 <a href="#usage-in-legacy-html">Support for legacy HTML content</a>
          </div>
        </div>

        <div class="toc2">
          1.5 <a href="#out-of-scope">Out of Scope</a>
        </div>

        <div class="toc2">
          1.6 <a href="#design-decisions">Important Design Principles</a>
        </div>
      </div>

      <div class="toc1">
        2 <a href="#basic-concepts">Basic Concepts</a>

        <div class="toc2">
          2.1 <a href="#basic-concepts-selection">Selection</a>

          <div class="toc3">
            2.1.1 <a href="#basic-concepts-selection-local">Local Approach</a>
          </div>

          <div class="toc3">
            2.1.2 <a href="#basic-concepts-selection-global">Global Approach</a>
          </div>
        </div>

        <div class="toc2">
          2.2 <a href="#basic-concepts-overinher">Overriding and Inheritance</a>
        </div>

        <div class="toc2">
          2.3 <a href="#basic-concepts-addingpointing">Adding Information or Pointing to
          Existing Information</a>
        </div>
      </div>

      <div class="toc1">
        3 <a href="#notation-terminology">Notation and Terminology</a>

        <div class="toc2">
          3.1 <a href="#notation">Notation</a>
        </div>

        <div class="toc2">
          3.2 <a href="#def-datacat">Data category</a>
        </div>

        <div class="toc2">
          3.3 <a href="#def-selection">Selection</a>
        </div>

        <div class="toc2">
          3.4 <a href="#def-local-attributes">ITS Local Attributes</a>
        </div>

        <div class="toc2">
          3.5 <a href="#def-rule-elements">Rule Elements</a>
        </div>

        <div class="toc2">
          3.6 <a href="#iri-usage">Usage of Internationalized Resource Identifiers in
          ITS</a>
        </div>

        <div class="toc2">
          3.7 <a href="#def-html">The Term HTML</a>
        </div>

        <div class="toc2">
          <ins class="diff-new">3.8</ins> <a href="#def-css-selector"><ins class=
          "diff-new">The Term CSS Selectors</ins></a>
        </div>
      </div>

      <div class="toc1">
        4 <a href="#conformance">Conformance</a>

        <div class="toc2">
          4.1 <a href="#conformance-product-schema">Conformance Type 1: ITS Markup
          Declarations</a>
        </div>

        <div class="toc2">
          4.2 <a href="#conformance-product-processing-expectations">Conformance Type 2:
          The Processing Expectations for ITS Markup</a>
        </div>

        <div class="toc2">
          4.3 <a href="#conformance-product-html-processing-expectations">Conformance
          Type 3: Processing Expectations for ITS Markup in HTML</a>
        </div>

        <div class="toc2">
          4.4 <a href="#conformance-class-html5-its">Conformance Class for HTML5+ITS
          documents</a>
        </div>
      </div>

      <div class="toc1">
        5 <a href="#its-processing">Processing of ITS information</a>

        <div class="toc2">
          5.1 <a href="#its-version-attribute">Indicating the Version of ITS</a>
        </div>

        <div class="toc2">
          5.2 <a href="#datacategory-locations">Locations of Data Categories</a>

          <div class="toc3">
            5.2.1 <a href="#selection-global">Global, Rule-based Selection</a>
          </div>

          <div class="toc3">
            5.2.2 <a href="#selection-local">Local Selection in an XML Document</a>
          </div>
        </div>

        <div class="toc2">
          5.3 <a href="#selectors">Query Language of Selectors</a>

          <div class="toc3">
            5.3.1 <a href="#queryLanguage">Choosing Query Language</a>
          </div>

          <div class="toc3">
            5.3.2 <a href="#d0e2045">XPath 1.0</a>
          </div>

          <div class="toc3">
            5.3.3 <a href="#css-selectors">CSS Selectors</a>

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