That said, there is a set of proposals about the future of ODD which would make solving this
problem somewhat easier.
is the relevant feature request. A specially-convened small working group discussed this,
and the TEI's technical council debated it last week.

Pending more detailed experimentation with implementation, it is likely that in the near future ODD will
support a mechanism like

   <macroRef key="" source=""/>

that is to say, "read a specified URI and find therein the ODD definition of"

No absolute promises, and you can't have it today, but you can reasonably expect to
think this way in the future.

Sebastian Rahtz      
(acting) Information and Support Group Manager
Oxford University Computing Services
13 Banbury Road, Oxford OX2 6NN. Phone +44 1865 283431

Sólo le pido a Dios
que el futuro no me sea indiferente