Which XPath and what is available?

Hi,

Last question for this week I hope :)

I am trying to work with the xforms and I am getting mixed signals
here about what to use. I understand that the "programming language"
to use is XPath, and I assume it is version 1.0 not 2.0, right?
The reason for this is that some of the 2.0 functions I try return
errors. Now looking up the 1.0 functions, I am getting different
results to what I expect. If I use a basic function like node-kind(),
I am getting a blank/NULL return? 

To add to all this confusion, when I looked up the XPath 1.0 definitions
on the web, the w3c site mentions XPath 2.0 in the 1.0 definitions?
Is there a document somewhere which lists the functions that are
available to use within the XForm controls in OpenOffice.org 2.0?

Regards
Jonathon
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