[tannhaeuser]

> HTML is imho a stereotypical example where XML is a good fit

Indeed, this was what XML was created for. From W3C's XML specification:

> The Extensible Markup Language (XML) is a subset of SGML that is completely described in this document. Its goal is to enable generic SGML to be served, received, and processed on the Web in the way that is now possible with HTML.

Honestly, what's absurd is GP comment's cluelessness.