<xs:simpleType name="CMMDirectionEnumType">
  <xs:annotation>
    <xs:documentation>The CMMDirectionEnumType enumerates values that describe the directions on a CMM with which axes may be aligned. The directions are those seen when standing in front of the CMM.</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:NMTOKEN">
    <xs:enumeration value="RIGHT"/>
    <xs:enumeration value="LEFT"/>
    <xs:enumeration value="FRONT"/>
    <xs:enumeration value="BACK"/>
    <xs:enumeration value="UP"/>
    <xs:enumeration value="DOWN"/>
  </xs:restriction>
</xs:simpleType>