RE: References to a value of an element in another element?

> The main point of using XML Schema for formally specifying 
> XML vocabularies is to facilitate application 
> interoperability. I think the smart ones will use the minimal 
> subset expected from all processors while the not-so-smart 
> ones will arrive at the same result the hard way. There are 
> already (mis-)features in XML Schema 1.0 that are avoided 
> pretty much by everyone (e.g., redefine).

On the other hand, it might be that everyone ends up implementing the whole
of XPath 2.0 because it's too much of a pain to implement a subset. That's
certainly what I intend to do.

Michael Kay
http://www.saxonica.com/