"Ronald" wrote : The editor is a different story. With new (user defined) element names it is harder to extend than the runtime engine, but not completely impossible. Using attributes would make it a little easier. | | With regard to your 40 days, I think it is very well possible to extend the existing jPDL (maybe even the pvm) and the GPD to support large parts of this (contributions always welcome, with 'support' from our side in return ;-) ) If you want to go this way, discussing this in the dev forum is a good thing to do. At the moment the editor is not yet easily extendable in this way. Hence also the fact that you did not find a lot of documentation about it. We have focused on other priorities than extensibility but most of the pieces to do this are present. I would need to define a few more extension points (or add options to existing extension points) and clean up the code a little bit. There is a JIRA issue available already (GPD-292) so we can continue the discussion there as well. In any case, 40 development days seems more then enough to me to pull this off. The final goal is to be able to do this in a couple of hours of development time at the most. Regards, Koen View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4253316#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...