xml & xsl editors

I am just starting to learn xml and xsl and have been doing some simple
coding by hand. Maybe simple isn't the right word, because one little
mistake of course breaks the code. Can anyone recommend an xml or xsl
stylesheet editor/generator that I can try? Shareware or something on a
trial basis?

And in your opinion, is this a technology that is going to be around for a
while? It certainly has a lot of promise, but just as many drawbacks, at
least for now.

Michael Barath

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