Question regarding the relation of m:about/m:property andm:data-type/m:data-value

[Svante Schubert <Svante.Schubert@Sun.COM>]

Currently we defined that m:data-type or m:data-value can occur 
independent of each other, but require the existence of m:about/m:property.
Would it make sense to allow even m:data-type or m:data-value without 
m:about/m:property?
Describing the data value or data type of the element being an anonymous 
node.

<define name="common-meta-attlist" combine="interleave">
    <optional>
        <attribute name="m:about">
            <data type="anyURI"/>
        </attribute>
        <attribute name="m:property">
            <data type="anyURI"/>
        </attribute>
        <ref name="common-meta-literal-attlist"/>
    </optional>
</define>
<define name="common-meta-literal-attlist" combine="interleave">
    <optional>
        <attribute name="m:data-type">
            <data type="anyURI"/>
        </attribute>
    </optional>
    <optional>
        <attribute name="m:data-value">
            <ref name="string"/>
        </attribute>
    </optional>
</define>

Svante