Newbie - howto write to an XML file with XSL

Hi all,

I am trying to read in an xml file, display it as a web page, where a
user can insert data into avaiable text fields for the xsl script to
write back out (append) to the xml tree i.e. use the xml document as a
database to store data in.

Is this a valid use for xsl, and how do I do it.
Useful URLs would be great!

Thanks

Andy

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