<?xml version="1.0" encoding="UTF-8"?>
<doctype>
  <flag name="presentation">
    <include/>
  </flag>
  <includedSection flag="presentation">
    <element>
      <name>big</name>
      <pcdata/>
    </element>
    <element>
      <name>small</name>
      <pcdata/>
    </element>
  </includedSection>
  <element>
    <name>em</name>
    <pcdata/>
  </element>
  <element>
    <name>para</name>
    <zeroOrMore>
      <choice>
        <pcdata/>
        <elementRef>
          <name>em</name>
        </elementRef>
        <elementRef>
          <name>big</name>
        </elementRef>
        <elementRef>
          <name>small</name>
        </elementRef>
      </choice>
    </zeroOrMore>
  </element>
</doctype>