I don't see the point of this. The problem Sam discussed can be solved without it and without requiring the div. Death to "the div is not part of the content".
i) Encourage xhtml users to wrap content in a div
ii) Require that they before adding any wrapper, they check whether there already is one, and use that instead. This prevents telescoping divs.
I'd also request this:
iii) Require that xhtml and *xml content elements have only a single child node. That is, all xml must be wrapped in an enclosing element (eg <content>text <b>bold</b> more text</content> would be invalid).
Graham
