<xsd:simpleType name="AreaUnitsContentType">
    <xsd:annotation>
        <xsd:documentation>
                This code list represents the System Internationale's unit of measure for area.
            </xsd:documentation>
    </xsd:annotation>
    <xsd:restriction base="xsd:normalizedString">
        <xsd:enumeration value="square meter">
            <xsd:annotation>
                <xsd:documentation source="http://www.unc.edu/~rowlett/units/">Square Meter</xsd:documentation>
            </xsd:annotation>
        </xsd:enumeration>
        <xsd:enumeration value="square kilometer">
            <xsd:annotation>
                <xsd:documentation source="http://www.unc.edu/~rowlett/units/">Square Kilometer</xsd:documentation>
            </xsd:annotation>
        </xsd:enumeration>
        <xsd:enumeration value="square inch">
            <xsd:annotation>
                <xsd:documentation source="http://www.unc.edu/~rowlett/units/">Square Inch</xsd:documentation>
            </xsd:annotation>
        </xsd:enumeration>
        <xsd:enumeration value="square foot">
            <xsd:annotation>
                <xsd:documentation source="http://www.unc.edu/~rowlett/units/">Square Foot</xsd:documentation>
            </xsd:annotation>
        </xsd:enumeration>
        <xsd:enumeration value="square yard">
            <xsd:annotation>
                <xsd:documentation source="http://www.unc.edu/~rowlett/units/">Square Yard</xsd:documentation>
            </xsd:annotation>
        </xsd:enumeration>
        <xsd:enumeration value="square mile">
            <xsd:annotation>
                <xsd:documentation source="http://www.unc.edu/~rowlett/units/">Square Mile</xsd:documentation>
            </xsd:annotation>
        </xsd:enumeration>
        <xsd:enumeration value="square rod">
            <xsd:annotation>
                <xsd:documentation source="http://www.unc.edu/~rowlett/units/">Square Rod</xsd:documentation>
            </xsd:annotation>
        </xsd:enumeration>
        <xsd:enumeration value="circular inch">
            <xsd:annotation>
                <xsd:documentation source="http://www.unc.edu/~rowlett/units/">Circular Inch</xsd:documentation>
            </xsd:annotation>
        </xsd:enumeration>
        <xsd:enumeration value="circular mil">
            <xsd:annotation>
                <xsd:documentation source="http://www.unc.edu/~rowlett/units/">Circular Millimeter</xsd:documentation>
            </xsd:annotation>
        </xsd:enumeration>
        <xsd:enumeration value="acre">
            <xsd:annotation>
                <xsd:documentation source="http://www.unc.edu/~rowlett/units/">Acre</xsd:documentation>
            </xsd:annotation>
        </xsd:enumeration>
        <xsd:enumeration value="rood">
            <xsd:annotation>
                <xsd:documentation source="http://www.unc.edu/~rowlett/units/">Rood</xsd:documentation>
            </xsd:annotation>
        </xsd:enumeration>
        <xsd:enumeration value="hectare">
            <xsd:annotation>
                <xsd:documentation source="http://www.unc.edu/~rowlett/units/">Hectare</xsd:documentation>
            </xsd:annotation>
        </xsd:enumeration>
        <xsd:enumeration value="township">
            <xsd:annotation>
                <xsd:documentation source="http://www.unc.edu/~rowlett/units/">Township</xsd:documentation>
            </xsd:annotation>
        </xsd:enumeration>
    </xsd:restriction>
</xsd:simpleType>

• AreaUnitsContentType
• sqdt:unitCode