To be honest, I did not see the post until now. As for the questions asked, I will document how to do this type of customization soon. It is not as easy as I want it to be yet. The best way to do it at the moment is indeed create a new mapping with a new semantic element that would derive from the generic node and a new xml mapping element that uses the 'node' xml tag. You can provide entries in the palette for it with the paletteEntry extension point and additional property editors that would appear in a new tab or in a tab of your choice by using the propertyTab and propertySection extension point. Let us know how it goes. Regards, Koen View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4056776#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...