Talk:Canonical S-expressions

XML section comment: reference please
I'm pretty familiar with XML and this statement doesn't appear to be correct:

"XML, however, has limitations on recursive use of element names."

Can someone show a reference please? What exactly is meant by this. Is is in reference to DTD? If so, DTD is not XML. It's a type of schema and one that is rarely used for new work.

Dubwai 15:30, 2 March 2007 (UTC)