Where can I find the XSLT DTD?

Hello everybody,

I don't see this question in the mailing list since my subscription.
I'd like to find the XSLT DTD to customize my XML editor.
Where can I find this DTD?

Another question is:
Where can I find a discussion about people using editors to write
XSL...?
As I'm knew in this world I'd like to have the opinion of experienced
users on this topic.

Thank you.
Yann.


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