Been looking at xopus once again. The demos are useful as I never knew Xopus actually supported xml editing to a xml schema. Will need to try it out once again i think. Didnt know Xopus wasnt opensource, or maybe I was thinking of Bitflux. Also can someone please tell me what is bitflux's CMS popoon? It sounds like cocoon converted into cocoon. I think this says it all Popoon basiert auf Ideen von Apaches Cocoon
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More information on slides and presentations and the wiki is a reminder why I or someone needs to write a RelaxNG to Xml schema xslt.