2.2.5.1 dsc:DocumentFormatBaseType

The dsc:DocumentFormatBaseType type defines a union of types dsc:DocumentFormatWKVType and dsc:MimeExtensionPatternType.

 <xs:simpleType name="DocumentFormatBaseType">
    <xs:union memberTypes="dsc:DocumentFormatWKVType 
       dsc:MimeExtensionPatternType"/>
 </xs:simpleType>