The optional angularUnit attribute defines the UnitName for the AngleRangeType.
Source
<xs:complexType name="AngleRangeType"><xs:annotation><xs:documentation>The AngleRangeType defines an angle range.</xs:documentation></xs:annotation><xs:simpleContent><xs:extension base="D2Type"><xs:attribute name="angularUnit" type="xs:token"><xs:annotation><xs:documentation>The optional angularUnit attribute defines the UnitName for the AngleRangeType.</xs:documentation></xs:annotation></xs:attribute></xs:extension></xs:simpleContent></xs:complexType>
<xs:attribute name="angularUnit" type="xs:token"><xs:annotation><xs:documentation>The optional angularUnit attribute defines the UnitName for the AngleRangeType.</xs:documentation></xs:annotation></xs:attribute>