> 
> I understand that the value of a variable cannot be modified 
> once it has been assigned, but is it possible to allocate a 
> global variable at the start of a stylesheet and then assign 
> it a value at a later time, such as within a named template?
> 
No, it isn't possible.

You need to stop thinking sequentially. There is no such thing as "a
later time" in XSLT.

Michael Kay
Software AG
home: Michael.H.Kay@xxxxxxxxxxxx
work: Michael.Kay@xxxxxxxxxxxxxx 


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