[Zope] document versions

zopistas, how would I write a dtml_method to render a objects history (undoable transactions/revisions)? any insight is much appreciated. how about being able to export the objects history (revisions) via XML and then I could pack and then reimport it into ZODB (or is this complete madness? ) - this way I can still pack and keep revisions around of specific objects... i.e. I would like to keep all objects revisions but need to PACK the DB (because its overwhelming large) -- what is the way, masters de zope? many thanks, george runyan grunyan@emerging.com