<xs:simpleType name="PositionCapabilityCalculationEnumType"><xs:annotation><xs:documentation>The PositionCapabilityCalculationEnumType enumerates values that describe methods of calculating capability for position tolerances.</xs:documentation></xs:annotation><xs:restriction base="xs:NMTOKEN"><xs:enumeration value="THREE_SIGMA"/><xs:enumeration value="SIX_SIGMA"/><xs:enumeration value="BIVARIATE"/><xs:enumeration value="TRIVARIATE"/></xs:restriction></xs:simpleType>