List20

<xs:simpleType name="List20">
  <xs:annotation>
    <xs:documentation source="ONIX Code List 20">Event role</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:string">
    <xs:enumeration value="01">
      <xs:annotation>
        <xs:documentation>Publication linked to conference</xs:documentation>
        <xs:documentation>For example an academic, professional or political conference</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="02">
      <xs:annotation>
        <xs:documentation>Complete proceedings of conference</xs:documentation>
        <xs:documentation/>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="03">
      <xs:annotation>
        <xs:documentation>Selected papers from conference</xs:documentation>
        <xs:documentation/>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="11">
      <xs:annotation>
        <xs:documentation>Publication linked to sporting event</xs:documentation>
        <xs:documentation>For example a competitive match, fixture series or championship</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="12">
      <xs:annotation>
        <xs:documentation>Programme or guide for sporting event</xs:documentation>
        <xs:documentation/>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="21">
      <xs:annotation>
        <xs:documentation>Publication linked to artistic event</xs:documentation>
        <xs:documentation>For example a theatrical or musical event or performance, a season of events or performances, or an exhibition of art</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="22">
      <xs:annotation>
        <xs:documentation>Programme or guide for artistic event</xs:documentation>
        <xs:documentation/>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="31">
      <xs:annotation>
        <xs:documentation>Publication linked to exposition</xs:documentation>
        <xs:documentation>For example a commercial exposition</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="32">
      <xs:annotation>
        <xs:documentation>Programme or guide for exposition</xs:documentation>
        <xs:documentation/>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>