> If you're using Saxon, the other good news is that the first reference
> to //file_audio will search the document for all these elements, and
> subsequent references won't need to do it again.
>
> But with other processors, assigning a global variable to this node-set
> might be a good idea.
>
> Michael Kay

Can you say more about assigning a global variable to the node set? For our
app we are using Saxon, but I think you're suggesting a more general case.
Is it because the processor will construct the node set once and then
subsequent operations will be more efficient on that node set?

Chris



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