Hi Gregory,

>Think your mirror is a good idea. I will have to create two methods, one for creating a node and one for removing a node. These two methods will update a property or a cursor of the nodekeys that exist. Hence the NodeExists() function will not error any more

To go further, I would suggest to do this with EXPANDED as well as with what should happen on nodeclick and the like.

I'm sorry, I have done all this before, but I guess it's now to tricky for an example.

Agnes