Hi! I have a database of categorized links in pgSQL. And I have programmed a folderish produkt, witch shows all links from a special category. Now I can add into this folders other folders of the same type, and can build a tree of categories! Adding some dtml into this folders adds category-specific headers and footers! Very fine! I have to written a management-view of all links in the special category. And now starts the problem. I want to copy and move the links into other categories by buttons similiar to the normal zope copy, cut and paste buttons, using the same clipboard. If you try to paste such links into another folder of the same type, all should work normal, if you paste it into a normal folder, an error should arise! How may I do this? I don't want to create my own clipboard, but I also can't use OFS.CopySupport as parent of my product, because the links aren't stored in zope-db, but CopySupport stores the physical path into the clipboard! Bye Marcus -- Das LARP-Portal im Internet: LARP-Welt: http://larp-welt.de You know that you drink too much coffee when: ... You don't even wait for the water to boil anymore.