<xs:simpleType name="surveyRoleType"> <xs:restriction base="xs:string"> <xs:enumeration value="measured" /> <xs:enumeration value="to stake out" /> <xs:enumeration value="staked out" /> <xs:enumeration value="calculated" /> <xs:enumeration value="assistance point" /> <xs:enumeration value="user entered point" /> <xs:enumeration value="control point" /> </xs:restriction> </xs:simpleType>