[topicmapmail] tagging vs topics

[PeterV]

>I think there is a problem of differing perspectives here.  The existing
>topic map cognoscenti have viewed XTM as a transfer syntax for use
>between topic map engines.  So, the question of integrating XTM and
>document XML never arose, since topic map engines don't store documents.
>Indeed, XTM doesn't even allow non-topic-map XML fragments, on the basis
>that the topic map paradigm should be used to encode all information and
>relationships.  This just won't work for documents, just as it is
>awkward (although possible) to store richly marked up documents in a
>relational database.

That's exactly what I mean :) The NewsML example is what I mean. You can 
see why someone would want to store stuff *within* the text of a document, 
right?

What I am trying to understand is how do you marry these two different 
approaches. How can you embed topics in a file, while still having a 
separate topic map. It would be silly to use two separate technologies, 
since you'd be duplicating topic data in separate places and that is of 
course evil.
Peter