metadata field

Am just working on the content association bit, and wondering more  
about citations and a new metadata field that generalizes the already  
approved citation field that I talk about here:

<http://wiki.oasis-open.org/office/ 
Associating_Metadata_with_Document_Content>

How about this ...

A citation:

<text:field>
   <text:source>
     <meta:fieldType rdf:resource="http://opendocument.xml.org/fields/ 
citation"/>
     <meta:referent rdf:resource="info:doi/xxxxxxxxxxxxxxxx"/>
     <meta:referent rdf:resource="info:doi/yyyyyyyyyyyyyyyy"  
cite:pages="23"/>
   </text:source>
   <text:body>
     <text:span>(Doe, 1999:23; Smith, 2000)</text:span>
   </tet:body>
</text:field>

John M's medical case:

<text:field>
   <text:source>
     <meta:fieldType rdf:resource="http://example.net/fields/medicine/ 
diagnosis"/>
     <meta:referent rdf:resource="urn:uuid:zzzzzzzzzzzzzzzzz"/>
   </text:source>
   <text:body>
     <text:span>Dr. John diagnosis Jane Doe with X disease.</text:span>
   </tet:body>
</text:field>

Might even be able to put links or tooltips in the body span above.

So idea is any extension developer can add their own special field by  
giving it a type with an IRI (though we'd have a standard list). That  
field can then be repsonsible for certain kinds of metadata.

Am just thrrowing stuff at the wall here and so not sure about the  
details (namespaces, etc.), but I think this general approach might  
well be promising.

Bruce