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1328 aurelien 1
<?xml version="1.0" encoding="UTF-8"?>
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<!--
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  -*- rnc -*-
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  RELAX NG Compact Syntax Grammar for the
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  Atom Format Specification Version 11
6
-->
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<grammar ns="http://www.w3.org/1999/xhtml" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:s="http://www.ascc.net/xml/schematron" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns="http://relaxng.org/ns/structure/1.0" datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
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  <start>
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    <choice>
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      <ref name="atomFeed"/>
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      <ref name="atomEntry"/>
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    </choice>
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  </start>
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  <!-- Common attributes -->
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  <define name="atomCommonAttributes">
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    <optional>
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      <attribute name="xml:base">
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        <ref name="atomUri"/>
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      </attribute>
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    </optional>
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    <optional>
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      <attribute name="xml:lang">
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        <ref name="atomLanguageTag"/>
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      </attribute>
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    </optional>
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    <zeroOrMore>
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      <ref name="undefinedAttribute"/>
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    </zeroOrMore>
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  </define>
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  <!-- Text Constructs -->
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  <define name="atomPlainTextConstruct">
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    <ref name="atomCommonAttributes"/>
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    <optional>
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      <attribute name="type">
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        <choice>
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          <value>text</value>
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          <value>html</value>
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        </choice>
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      </attribute>
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    </optional>
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    <text/>
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  </define>
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  <define name="atomXHTMLTextConstruct">
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    <ref name="atomCommonAttributes"/>
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    <attribute name="type">
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      <value>xhtml</value>
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    </attribute>
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    <ref name="xhtmlDiv"/>
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  </define>
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  <define name="atomTextConstruct">
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    <choice>
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      <ref name="atomPlainTextConstruct"/>
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      <ref name="atomXHTMLTextConstruct"/>
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    </choice>
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  </define>
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  <!-- Person Construct -->
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  <define name="atomPersonConstruct">
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    <ref name="atomCommonAttributes"/>
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    <interleave>
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      <element name="atom:name">
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        <text/>
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      </element>
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      <optional>
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        <element name="atom:uri">
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          <ref name="atomUri"/>
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        </element>
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      </optional>
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      <optional>
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        <element name="atom:email">
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          <ref name="atomEmailAddress"/>
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        </element>
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      </optional>
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      <zeroOrMore>
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        <ref name="extensionElement"/>
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      </zeroOrMore>
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    </interleave>
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  </define>
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  <!-- Date Construct -->
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  <define name="atomDateConstruct">
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    <ref name="atomCommonAttributes"/>
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    <data type="dateTime"/>
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  </define>
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  <!-- atom:feed -->
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  <define name="atomFeed">
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    <element name="atom:feed">
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      <s:rule context="atom:feed">
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        <s:assert test="atom:author or not(atom:entry[not(atom:author)])">An atom:feed must have an atom:author unless all of its atom:entry children have an atom:author.</s:assert>
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      </s:rule>
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      <ref name="atomCommonAttributes"/>
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      <interleave>
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        <zeroOrMore>
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          <ref name="atomAuthor"/>
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        </zeroOrMore>
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        <zeroOrMore>
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          <ref name="atomCategory"/>
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        </zeroOrMore>
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        <zeroOrMore>
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          <ref name="atomContributor"/>
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        </zeroOrMore>
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        <optional>
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          <ref name="atomGenerator"/>
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        </optional>
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        <optional>
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          <ref name="atomIcon"/>
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        </optional>
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        <ref name="atomId"/>
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        <zeroOrMore>
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          <ref name="atomLink"/>
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        </zeroOrMore>
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        <optional>
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          <ref name="atomLogo"/>
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        </optional>
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        <optional>
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          <ref name="atomRights"/>
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        </optional>
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        <optional>
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          <ref name="atomSubtitle"/>
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        </optional>
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        <ref name="atomTitle"/>
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        <ref name="atomUpdated"/>
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        <zeroOrMore>
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          <ref name="extensionElement"/>
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        </zeroOrMore>
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      </interleave>
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      <zeroOrMore>
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        <ref name="atomEntry"/>
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      </zeroOrMore>
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    </element>
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  </define>
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  <!-- atom:entry -->
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  <define name="atomEntry">
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    <element name="atom:entry">
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      <s:rule context="atom:entry">
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        <s:assert test="atom:link[@rel='alternate'] or atom:link[not(@rel)] or atom:content">An atom:entry must have at least one atom:link element with a rel attribute of 'alternate' or an atom:content.</s:assert>
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      </s:rule>
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      <s:rule context="atom:entry">
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        <s:assert test="atom:author or ../atom:author or atom:source/atom:author">An atom:entry must have an atom:author if its feed does not.</s:assert>
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      </s:rule>
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      <ref name="atomCommonAttributes"/>
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      <interleave>
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        <zeroOrMore>
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          <ref name="atomAuthor"/>
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        </zeroOrMore>
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        <zeroOrMore>
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          <ref name="atomCategory"/>
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        </zeroOrMore>
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        <optional>
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          <ref name="atomContent"/>
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        </optional>
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        <zeroOrMore>
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          <ref name="atomContributor"/>
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        </zeroOrMore>
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        <ref name="atomId"/>
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        <zeroOrMore>
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          <ref name="atomLink"/>
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        </zeroOrMore>
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        <optional>
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          <ref name="atomPublished"/>
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        </optional>
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        <optional>
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          <ref name="atomRights"/>
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        </optional>
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        <optional>
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          <ref name="atomSource"/>
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        </optional>
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        <optional>
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          <ref name="atomSummary"/>
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        </optional>
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        <ref name="atomTitle"/>
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        <ref name="atomUpdated"/>
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        <zeroOrMore>
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          <ref name="extensionElement"/>
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        </zeroOrMore>
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      </interleave>
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    </element>
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  </define>
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  <!-- atom:content -->
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  <define name="atomInlineTextContent">
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    <element name="atom:content">
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      <ref name="atomCommonAttributes"/>
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      <optional>
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        <attribute name="type">
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          <choice>
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            <value>text</value>
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            <value>html</value>
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          </choice>
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        </attribute>
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      </optional>
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      <zeroOrMore>
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        <text/>
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      </zeroOrMore>
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    </element>
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  </define>
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  <define name="atomInlineXHTMLContent">
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    <element name="atom:content">
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      <ref name="atomCommonAttributes"/>
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      <attribute name="type">
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        <value>xhtml</value>
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      </attribute>
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      <ref name="xhtmlDiv"/>
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    </element>
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  </define>
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  <define name="atomInlineOtherContent">
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    <element name="atom:content">
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      <ref name="atomCommonAttributes"/>
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      <optional>
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        <attribute name="type">
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          <ref name="atomMediaType"/>
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        </attribute>
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      </optional>
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      <zeroOrMore>
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        <choice>
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          <text/>
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          <ref name="anyElement"/>
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        </choice>
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      </zeroOrMore>
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    </element>
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  </define>
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  <define name="atomOutOfLineContent">
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    <element name="atom:content">
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      <ref name="atomCommonAttributes"/>
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      <optional>
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        <attribute name="type">
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          <ref name="atomMediaType"/>
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        </attribute>
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      </optional>
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      <attribute name="src">
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        <ref name="atomUri"/>
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      </attribute>
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      <empty/>
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    </element>
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  </define>
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  <define name="atomContent">
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    <choice>
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      <ref name="atomInlineTextContent"/>
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      <ref name="atomInlineXHTMLContent"/>
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      <ref name="atomInlineOtherContent"/>
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      <ref name="atomOutOfLineContent"/>
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    </choice>
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  </define>
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  <!-- atom:author -->
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  <define name="atomAuthor">
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    <element name="atom:author">
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      <ref name="atomPersonConstruct"/>
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    </element>
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  </define>
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  <!-- atom:category -->
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  <define name="atomCategory">
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    <element name="atom:category">
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      <ref name="atomCommonAttributes"/>
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      <attribute name="term"/>
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      <optional>
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        <attribute name="scheme">
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          <ref name="atomUri"/>
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        </attribute>
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      </optional>
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      <optional>
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        <attribute name="label"/>
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      </optional>
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      <ref name="undefinedContent"/>
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    </element>
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  </define>
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  <!-- atom:contributor -->
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  <define name="atomContributor">
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    <element name="atom:contributor">
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      <ref name="atomPersonConstruct"/>
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    </element>
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  </define>
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  <!-- atom:generator -->
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  <define name="atomGenerator">
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    <element name="atom:generator">
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      <ref name="atomCommonAttributes"/>
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      <optional>
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        <attribute name="uri">
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          <ref name="atomUri"/>
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        </attribute>
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      </optional>
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      <optional>
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        <attribute name="version"/>
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      </optional>
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      <text/>
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    </element>
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  </define>
284
  <!-- atom:icon -->
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  <define name="atomIcon">
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    <element name="atom:icon">
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      <ref name="atomCommonAttributes"/>
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      <ref name="atomUri"/>
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    </element>
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  </define>
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  <!-- atom:id -->
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  <define name="atomId">
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    <element name="atom:id">
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      <ref name="atomCommonAttributes"/>
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      <ref name="atomUri"/>
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    </element>
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  </define>
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  <!-- atom:logo -->
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  <define name="atomLogo">
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    <element name="atom:logo">
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      <ref name="atomCommonAttributes"/>
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      <ref name="atomUri"/>
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    </element>
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  </define>
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  <!-- atom:link -->
306
  <define name="atomLink">
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    <element name="atom:link">
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      <ref name="atomCommonAttributes"/>
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      <attribute name="href">
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        <ref name="atomUri"/>
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      </attribute>
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      <optional>
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        <attribute name="rel">
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          <choice>
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            <ref name="atomNCName"/>
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            <ref name="atomUri"/>
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          </choice>
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        </attribute>
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      </optional>
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      <optional>
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        <attribute name="type">
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          <ref name="atomMediaType"/>
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        </attribute>
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      </optional>
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      <optional>
326
        <attribute name="hreflang">
327
          <ref name="atomLanguageTag"/>
328
        </attribute>
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      </optional>
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      <optional>
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        <attribute name="title"/>
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      </optional>
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      <optional>
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        <attribute name="length"/>
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      </optional>
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      <ref name="undefinedContent"/>
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    </element>
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  </define>
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  <!-- atom:published -->
340
  <define name="atomPublished">
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    <element name="atom:published">
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      <ref name="atomDateConstruct"/>
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    </element>
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  </define>
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  <!-- atom:rights -->
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  <define name="atomRights">
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    <element name="atom:rights">
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      <ref name="atomTextConstruct"/>
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    </element>
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  </define>
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  <!-- atom:source -->
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  <define name="atomSource">
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    <element name="atom:source">
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      <ref name="atomCommonAttributes"/>
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      <interleave>
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        <zeroOrMore>
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          <ref name="atomAuthor"/>
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        </zeroOrMore>
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        <zeroOrMore>
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          <ref name="atomCategory"/>
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        </zeroOrMore>
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        <zeroOrMore>
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          <ref name="atomContributor"/>
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        </zeroOrMore>
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        <optional>
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          <ref name="atomGenerator"/>
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        </optional>
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        <optional>
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          <ref name="atomIcon"/>
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        </optional>
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        <optional>
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          <ref name="atomId"/>
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        </optional>
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        <zeroOrMore>
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          <ref name="atomLink"/>
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        </zeroOrMore>
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        <optional>
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          <ref name="atomLogo"/>
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        </optional>
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        <optional>
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          <ref name="atomRights"/>
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        </optional>
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        <optional>
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          <ref name="atomSubtitle"/>
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        </optional>
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        <optional>
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          <ref name="atomTitle"/>
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        </optional>
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        <optional>
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          <ref name="atomUpdated"/>
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        </optional>
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        <zeroOrMore>
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          <ref name="extensionElement"/>
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        </zeroOrMore>
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      </interleave>
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    </element>
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  </define>
398
  <!-- atom:subtitle -->
399
  <define name="atomSubtitle">
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    <element name="atom:subtitle">
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      <ref name="atomTextConstruct"/>
402
    </element>
403
  </define>
404
  <!-- atom:summary -->
405
  <define name="atomSummary">
406
    <element name="atom:summary">
407
      <ref name="atomTextConstruct"/>
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    </element>
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  </define>
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  <!-- atom:title -->
411
  <define name="atomTitle">
412
    <element name="atom:title">
413
      <ref name="atomTextConstruct"/>
414
    </element>
415
  </define>
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  <!-- atom:updated -->
417
  <define name="atomUpdated">
418
    <element name="atom:updated">
419
      <ref name="atomDateConstruct"/>
420
    </element>
421
  </define>
422
  <!-- Low-level simple types -->
423
  <define name="atomNCName">
424
    <data type="string">
425
      <param name="minLength">1</param>
426
      <param name="pattern">[^:]*</param>
427
    </data>
428
  </define>
429
  <!-- Whatever a media type is, it contains at least one slash -->
430
  <define name="atomMediaType">
431
    <data type="string">
432
      <param name="pattern">.+/.+</param>
433
    </data>
434
  </define>
435
  <!-- As defined in RFC 3066 -->
436
  <define name="atomLanguageTag">
437
    <data type="string">
438
      <param name="pattern">[A-Za-z]{1,8}(-[A-Za-z0-9]{1,8})*</param>
439
    </data>
440
  </define>
441
  <!--
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    Unconstrained; it's not entirely clear how IRI fit into
443
    xsd:anyURI so let's not try to constrain it here
444
  -->
445
  <define name="atomUri">
446
    <text/>
447
  </define>
448
  <!-- Whatever an email address is, it contains at least one @ -->
449
  <define name="atomEmailAddress">
450
    <data type="string">
451
      <param name="pattern">.+@.+</param>
452
    </data>
453
  </define>
454
  <!-- Simple Extension -->
455
  <define name="simpleExtensionElement">
456
    <element>
457
      <anyName>
458
        <except>
459
          <nsName ns="http://www.w3.org/2005/Atom"/>
460
        </except>
461
      </anyName>
462
      <text/>
463
    </element>
464
  </define>
465
  <!-- Structured Extension -->
466
  <define name="structuredExtensionElement">
467
    <element>
468
      <anyName>
469
        <except>
470
          <nsName ns="http://www.w3.org/2005/Atom"/>
471
        </except>
472
      </anyName>
473
      <choice>
474
        <group>
475
          <oneOrMore>
476
            <attribute>
477
              <anyName/>
478
            </attribute>
479
          </oneOrMore>
480
          <zeroOrMore>
481
            <choice>
482
              <text/>
483
              <ref name="anyElement"/>
484
            </choice>
485
          </zeroOrMore>
486
        </group>
487
        <group>
488
          <zeroOrMore>
489
            <attribute>
490
              <anyName/>
491
            </attribute>
492
          </zeroOrMore>
493
          <group>
494
            <optional>
495
              <text/>
496
            </optional>
497
            <oneOrMore>
498
              <ref name="anyElement"/>
499
            </oneOrMore>
500
            <zeroOrMore>
501
              <choice>
502
                <text/>
503
                <ref name="anyElement"/>
504
              </choice>
505
            </zeroOrMore>
506
          </group>
507
        </group>
508
      </choice>
509
    </element>
510
  </define>
511
  <!-- Other Extensibility -->
512
  <define name="extensionElement">
513
    <choice>
514
      <ref name="simpleExtensionElement"/>
515
      <ref name="structuredExtensionElement"/>
516
    </choice>
517
  </define>
518
  <define name="undefinedAttribute">
519
    <attribute>
520
      <anyName>
521
        <except>
522
          <name>xml:base</name>
523
          <name>xml:lang</name>
524
          <nsName ns=""/>
525
        </except>
526
      </anyName>
527
    </attribute>
528
  </define>
529
  <define name="undefinedContent">
530
    <zeroOrMore>
531
      <choice>
532
        <text/>
533
        <ref name="anyForeignElement"/>
534
      </choice>
535
    </zeroOrMore>
536
  </define>
537
  <define name="anyElement">
538
    <element>
539
      <anyName/>
540
      <zeroOrMore>
541
        <choice>
542
          <attribute>
543
            <anyName/>
544
          </attribute>
545
          <text/>
546
          <ref name="anyElement"/>
547
        </choice>
548
      </zeroOrMore>
549
    </element>
550
  </define>
551
  <define name="anyForeignElement">
552
    <element>
553
      <anyName>
554
        <except>
555
          <nsName ns="http://www.w3.org/2005/Atom"/>
556
        </except>
557
      </anyName>
558
      <zeroOrMore>
559
        <choice>
560
          <attribute>
561
            <anyName/>
562
          </attribute>
563
          <text/>
564
          <ref name="anyElement"/>
565
        </choice>
566
      </zeroOrMore>
567
    </element>
568
  </define>
569
  <!-- XHTML -->
570
  <define name="anyXHTML">
571
    <element>
572
      <nsName/>
573
      <zeroOrMore>
574
        <choice>
575
          <attribute>
576
            <anyName/>
577
          </attribute>
578
          <text/>
579
          <ref name="anyXHTML"/>
580
        </choice>
581
      </zeroOrMore>
582
    </element>
583
  </define>
584
  <define name="xhtmlDiv">
585
    <element name="xhtml:div">
586
      <zeroOrMore>
587
        <choice>
588
          <attribute>
589
            <anyName/>
590
          </attribute>
591
          <text/>
592
          <ref name="anyXHTML"/>
593
        </choice>
594
      </zeroOrMore>
595
    </element>
596
  </define>
597
</grammar>
598
<!-- EOF -->