> I am using BTree to store session qookies with OmniBase. > The code is like this: Have a look at the package OmniSupport in SqueakSource. There are subclasses for all the data-structures in the BTree package (ODBSBTree, ODBSTSTree, ODBSTreeSet), that nicely work together with OmnIBase. Cheers, Lukas -- Lukas Renggli http://www.lukas-renggli.ch