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Not Evil, Just Smelly (XML.com)

Edd Dumbill discusses Ted Nelson's XML is Evil essay on O'Reilly. "Nelson's article argues that inline markup, such as SGML and XML, is problematic. His alternative model comprises three layers: content, structure, and presentation. This is not coincidentally the model used by Xanadu, the hypertext system designed by Nelson and others. Xanadu's hypertext model is a closed world, where links never break, supporting copyright and version-management features. It sounds ideal. It is also widely unimplemented."
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