Someone tried to clear this up earlier, but it needs repeating.
XML is not a language. - XML is a "well-formed" tagged document.
- XSLT is a "valid, well-formed" document.
Definition of well-formed: All attributes are enclosed in quotes. All elements require end tags. There are other rules, but these are the two big ones.
Definition of valid: a well-formed document that also complies to a defined grammer such as a DTD or Schema.
Other than that, I agree with the other statements in the parent comment.
