<xs:simpleType name="AreaUom">
  <xs:restriction base="eml:UomEnum">
    <xs:enumeration value="acre">
      <xs:annotation>
        <xs:documentation>acre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="b">
      <xs:annotation>
        <xs:documentation>barn</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="cm2">
      <xs:annotation>
        <xs:documentation>square centimetre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="ft2">
      <xs:annotation>
        <xs:documentation>square foot</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="ha">
      <xs:annotation>
        <xs:documentation>hectare</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="in2">
      <xs:annotation>
        <xs:documentation>square inch</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="km2">
      <xs:annotation>
        <xs:documentation>square kilometre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="m2">
      <xs:annotation>
        <xs:documentation>square metre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="mi[US]2">
      <xs:annotation>
        <xs:documentation>square US survey mile</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="mi2">
      <xs:annotation>
        <xs:documentation>square mile</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="mm2">
      <xs:annotation>
        <xs:documentation>square millimetre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="section">
      <xs:annotation>
        <xs:documentation>section</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="um2">
      <xs:annotation>
        <xs:documentation>square micrometre</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="yd2">
      <xs:annotation>
        <xs:documentation>square yard</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>