<xs:attribute name="TextFormat" use="optional">
    <xs:annotation>
        <xs:documentation xml:lang="en">Indicates the format of text used in the description e.g. unformatted  or html.</xs:documentation>
    </xs:annotation>
    <xs:simpleType>
        <xs:restriction base="xs:NMTOKEN">
            <xs:enumeration value="PlainText">
                <xs:annotation>
                    <xs:documentation xml:lang="en">Textual data that is in ASCII format.</xs:documentation>
                </xs:annotation>
            </xs:enumeration>
            <xs:enumeration value="HTML">
                <xs:annotation>
                    <xs:documentation xml:lang="en">HTML formatted text.</xs:documentation>
                </xs:annotation>
            </xs:enumeration>
        </xs:restriction>
    </xs:simpleType>
</xs:attribute>