Im getting the output just as I wanted but Im
intrigued about the functionality of the <temp> node
and how it eliminated the duplicates at a later stage.
It's not actually needed, you could not add a temp node there and
use $rtf/temp/TD[ $rtf/TD[ later.
the point is that keys work on a per-document basis and by building a
temporary tree you are copying teh nodes in to a temporary (virtual)
document.
grouping with keys though is essentially an XSLT1 mechanism replaced in
xslt2 by xsl-for-each-group which has a rather more natural syntax.
David
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