Hi everybody, I just wrote a new blog post about customizing Oxygen to add editing support for a certain XML vocabulary: http://blog.oxygenxml.com/2014/08/the-oxygen-sdk-part-2-frameworks.html A lot more could be said on this particular subject so I can elaborate more on certain aspects if necessary. Enjoy and feel free to write us if you have any feedback on it. Regards, Radu Radu Coravu <oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger http://www.oxygenxml.com