xslt select expression

Hi,

I would like to know if the next selection expressions are used in XSLT (are
they in the recommandation?):

keyref(string name,node set values)
doc(string URI)
docref(node set)
local-part(node set)
qname(node set)
namespace(node set).
I have tried these expressions with 3 xslt processors but no result.


thanks,

Cornelia


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