osisLanguageUsage

<xs:simpleType name="osisLanguageUsage">
  <xs:restriction base="xs:string">
    <xs:enumeration value="base"/>
    <xs:enumeration value="didactic"/>
    <xs:enumeration value="interlinear"/>
    <xs:enumeration value="original"/>
    <xs:enumeration value="quotation"/>
    <xs:enumeration value="source"/>
    <xs:enumeration value="target"/>
    <xs:enumeration value="translation"/>
  </xs:restriction>
</xs:simpleType>