<xs:simpleType name="AreaPerAreaUom">
  <xs:restriction base="eml:UomEnum">
    <xs:enumeration value="%">
      <xs:annotation>
        <xs:documentation>percent</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="%[area]">
      <xs:annotation>
        <xs:documentation>percent [area basis]</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="cEuc">
      <xs:annotation>
        <xs:documentation>centieuclid</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="Euc">
      <xs:annotation>
        <xs:documentation>euclid</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="in2/ft2">
      <xs:annotation>
        <xs:documentation>square inch per square foot</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="in2/in2">
      <xs:annotation>
        <xs:documentation>square inch per square inch</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="m2/m2">
      <xs:annotation>
        <xs:documentation>square metre per square metre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="mm2/mm2">
      <xs:annotation>
        <xs:documentation>square millimetre per square millimetre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>