Iwan van der Kleyn wrote:

A feature I mis in Zope/CMF/Plone is version control of documents. With this I mean for example that authors can (minimally) view and revert to previous versions of documents. This as opposed to the back-end Revision Manager product which allows versioning of Zope objects in CVS.

I've found a reference to a project to integrate version control in Zope. http://dev.zope.org/Wikis/DevSite/Projects/ZopeVersionControl/FrontPage. Is it known what the status is of this endavour?

It works, but there's no UI. It is used by CMFStaging and PloneStaging to do versioning. These are something of a rough draft of what Plone will soon do for versioning, staging, and deployment. You may read the proposals for this on plone.org. --jcc -- "My point and period will be throughly wrought, Or well or ill, as this day's battle's fought."