> Here's one closer to home for you: An XML representation of a musical
> score. Return the trumpet section. Return the first 4 bars.
> Return the
> second movement.

Yes but here I'm more likely to need to know in advance that it has a
trumpet section etc. I'm more likely to return the Mods record for the
item with a link to the data, than the data intact (or at least support
Mods as a supported schema).

If I want sections then I'm interested in the relevant sections to the
query.

Matthew