<xs:simpleType name="TypeCSType">
  <xs:annotation>
    <xs:documentation>The type of Coordinate system (can be datum xyz, datum lbh, grid, ground, local or undefined)</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:NMTOKEN">
    <xs:enumeration value="datum_xyz"/>
    <xs:enumeration value="datum_lbh"/>
    <xs:enumeration value="grid"/>
    <xs:enumeration value="ground"/>
    <xs:enumeration value="local"/>
    <xs:enumeration value="undefined"/>
  </xs:restriction>
</xs:simpleType>