to the xml:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/xmlsdk/html/oriXMLStandards.asp

it's a web standard as much as html.
it's text that has some tags in it.

XML is not limited enough to be seriously considered as anything inbuild.

I personally would remove it from suggestions list but maybe will wait for no from Ruud.
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