use

Attribute Information

Used By

Complex Type xs:attribute

Source 

<xs:attribute name="use" use="optional" default="optional">
  <xs:simpleType>
    <xs:restriction base="xs:NMTOKEN">
      <xs:enumeration value="prohibited"/>
      <xs:enumeration value="optional"/>
      <xs:enumeration value="required"/>
    </xs:restriction>
  </xs:simpleType>
</xs:attribute>

Sample