It is my personal experience that life is easier if completely
separate questions are put into completely separate posts.

I guess in general it is easier to process everything and save
yourself the efforts in detecting subsets and handling possible side-
effects of not processing everything. Also, XSLT processing is usually
very fast, so performance is not likely to be an issue.

A second question, perhaps more complicated:

Has anyone any recommendations on how i might achieve the following:

something like:

1)check directory for changed xml files

2) if changed/new xml

3) apply xslt

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Michael M|ller-Hillebrand: Dokumentations-Technologie
Adobe Certified Expert, FrameMaker
Lvsungen und Training, FrameScript, XML/XSL, Unicode
Blog: http://cap-studio.de/ - Tel. +49 (9131) 28747