[DawnFalcon]

Website it's from is long gone.

And if you want to ignore it, your call. But it's perfectly specific enough, and indeed XSL (also from the W3C) avoids many of the same pitfalls, even sensibly using XML markup itself. It's also a good explanation of why the difficulty of using a natural formatting model and CSS's many inconsistencies - especially in duplicate tag functionality and it's inheritence model - lead to conflicting and incomplete implementations and there being no good WYSIWYG HTML+CSS editor.

If you're simply going to dismiss it like that, then I don't intend to continue the discussion with or (or any discussion on this forum again, for that matter). The primary evidence - lack of said editor - remains.