>>If your documents are html4 compliant or xhtml1 compliant they are already xml compliant.
>
>Well, they are probably not because I do not code HTML in XML. Unless I am missing something...


http://validator.w3.org/

I ran the UT's main page through this.

Your currently using HTML 4.1 Transitional.

And there are 132 errors on the page.

I chose to have it validated as HTML5, and you had 9 errors.

That could be because the HTML5 validator is incomplete.