Example: article.dsd, Part II

  <ElementDef ID="article-title" Name="title">
    <StringType/>
  </ElementDef>

  <ElementDef ID="authors">
    <Sequence>
      <Element Name="names"><Content IDRef="simpletext"/></Element>
      <Optional><Element Name="affiliation"><Content IDRef="simpletext"/></Element></Optional>
      <Optional><Element IDRef="link"/></Optional>
    </Sequence>
  </ElementDef>

  <ElementDef ID="abstract">
    <OneOrMore>
      <Element IDRef="paragraph"/>
    </OneOrMore>
  </ElementDef>

  <ElementDef ID="section">
    <AttributeDecl Name="id" IDType="ID" Optional="yes"/>
    <Element IDRef="section-title"/> <!--title element may be anywhere-->
    <Sequence>
      <ZeroOrMore><Element IDRef="paragraph"/></ZeroOrMore>
      <ZeroOrMore><Element IDRef="subsection"/></ZeroOrMore>
    </Sequence>
  </ElementDef>

  <ElementDef ID="section-title" Name="title"> <!--less restrictive than article-title-->
    <Content IDRef="simpletext"/>
  </ElementDef>

  <ElementDef ID="subsection">
    <AttributeDecl Name="id" IDType="ID" Optional="yes"/>
    <Element IDRef="section-title"/>
    <ZeroOrMore><Element IDRef="paragraph"/></ZeroOrMore>
  </ElementDef>

  <ElementDef ID="references">
    <ZeroOrMore>
      <Element IDRef="reference-item"/>
    </ZeroOrMore>
  </ElementDef>

  <ElementDef ID="reference-item" Name="item">
    <AttributeDecl Name="id" IDType="ID"/>
    <Element Name="authors"><Content IDRef="simpletext"/></Element>
    <Element Name="title"><Content IDRef="simpletext"/></Element>
    <Optional><Element Name="publisher"><Content IDRef="simpletext"/></Element></Optional>
    <Optional><Element Name="note"><Content IDRef="paragraph-content"/></Element></Optional>
    <Optional><Element Name="month"><StringType/></Element></Optional>
    <Optional><Element Name="year"><StringType/></Element></Optional>
  </ElementDef>