I finally got the time to read through the ZopeVersionControl proposal properly. It seems all very good too me. It does feel a bit like Zope as usual is completely technology driven and haven't invested much thought in how it should be used and how the management interface should look, but thats what I expected. :-) I also feel that there are some things that seem both hard to do and not very useful, such as sharing version across sites (unless you mean different directories in one installation that has siteroots). At the same time things like "diffs" between versions which I rather find like a very essential feature is put down as "optional". Other than these minor issues I can't wait for Zope with version control. In fact, I needed it months ago. :-)