<xs:attributeGroup name="editAttributes">
    <xs:annotation>
        <xs:documentation>A group of attributes to keep track of by whom and when the property value was changed</xs:documentation>
    </xs:annotation>
    <xs:attribute name="id" type="xs:ID">
        <xs:annotation>
            <xs:documentation>The local identifier of the property.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="creator" type="QCodeType">
        <xs:annotation>
            <xs:documentation>If the element is empty, specifies which entity (person, organisation or system) will edit the property. If the element is non-empty, specifies which entity (person, organisation or system) has edited the property.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="modified" type="DateOptTimeType">
        <xs:annotation>
            <xs:documentation>The date (and, optionally, the time) when the property was last modified. The initial value is the date (and, optionally, the time) of creation of the property.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
</xs:attributeGroup>