When magic InterWiki monikers: like action names (diff:, edit:) or features (jump:, find:) came into existence, a more powerful ewiki_interwiki() was introduced. This could now be enhanced to add new classes of non-feature prefixes.

New prefixes could be used to put out XML/XHTML meta data into pages (links).

For example XFN (XHTML Friends Network) comes to mind:

[friend:OfMine] <a href="wiki?OfMine" rel="friend">OfMine</a>
[kill:Bill] <a href="wiki?Bill" xwiki:rel="kill">Bill</a>

(actually rel= is pure HTML4)

This is the sound of the future "*SemanticWeb", no current search engine can deal with it. Other engines start to support RDF or FOAF already. Also see TheXmlWay.

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