> At this point, I'd say no to internal XSchemas, if only because sorting out 
> those details will take a long time and considerable debate.  It would also 
> require us to find some way of hiding the internal XSchemas from non-XSchema 
> aware processors, something I'm not fond of.
I agree with Simon.  I can't think of anything you can do with an internal 
XSchema that you can't do with an external XSchema, so including them in 1.0 
just means having to wrangle over a bunch of rules for resolving duplicate 
XSchemas.  With the recent partial validation discussions, this gets even 
uglier...
-- Ron Bourret