The AreaValueType is a SpecifiedDecimalType with an optional areaUnit attribute that identifies the unit being used by its UnitName. If no value for the attribute is given in an instance file when an area value is given, the unit type is the AreaUnit specified in the PrimaryUnits element of a FileUnits element, if that specification exists, and square meters if not.
<xs:complexType name="AreaValueType"><xs:annotation><xs:documentation>The AreaValueType is a SpecifiedDecimalType with an optional areaUnit attribute that identifies the unit being used by its UnitName. If no value for the attribute is given in an instance file when an area value is given, the unit type is the AreaUnit specified in the PrimaryUnits element of a FileUnits element, if that specification exists, and square meters if not.</xs:documentation></xs:annotation><xs:simpleContent><xs:extension base="SpecifiedDecimalType"><xs:attribute name="areaUnit" type="xs:token"><xs:annotation><xs:documentation>The optional areaUnit attribute defines the UnitName for the AreaValueType.</xs:documentation></xs:annotation></xs:attribute></xs:extension></xs:simpleContent></xs:complexType>
<xs:attribute name="areaUnit" type="xs:token"><xs:annotation><xs:documentation>The optional areaUnit attribute defines the UnitName for the AreaValueType.</xs:documentation></xs:annotation></xs:attribute>