[Zope-dev] Enabling cut/copy/paste/rename in ObjectManagers

I have re-written my ZStyleSheet product in python (I was having problems that I could not solve easily with DTML Methods) but I have hit another problem. I have 4 basic object classes, two of which are ObjectManagers, and I had (naively) expected them to immediately support cut/copy/paste/rename, but it would seem that my objects don't support these functions, and I can't work out why. Could someone tell me what an object needs to support these functions, and do the changes need to be to the parent or child objects? Haqa...