Official XSLT validator?

Question

Is there any official XSLT validator, like http://validator.w3.org/ for HTML & XHTML?

I know http://validator.w3.org/ can also be used to validate XML and XSL docume

Answer 1

There are many XML editing tools (and probably a few HTML ones as well) that know the structure of (X)HTML enough to highlight errors. Visual Studio for example can validate ANY XML document using the schema, including XHTML or XSL- Whether or not a div is allowed inside a span is defined in the XHTML schema.