HTML: a great success

But has become a sort of Garden of Eden, with lots of Thou Shalt Nots in the form of guidelines

Accessibility guidelines
Usability guidelines
Internationalisation guidelines
Metadata guidelines
Device independence guidelines

etc, etc, etc

And these communities have all come to the HTML working group to ask for new facilities.
Steven Pemberton, W3C/ CWI, Amsterdam, The Netherlands pictures and maps

XHTML2: The next generation in the X/HTML family