Adding DOCTYPE to xml output?

Hi all,

stupid question, but in my XSL in the match section of a template, I want
the resulting XML to include a <!DOCTYPE...> tag in it so when the XML is
used later, it is validated against the DTD (or schema) indicated. I don't
have my XSL book here, so I can't look it up until later tonight. Hoping
someone can respond beore then.

Thanks.

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