PVS (Portal content Versioning System) is a Zope product for use within CMF or Plone instances. It is the result of our frustration with the current limitations of the workflow mechanism: a user has to retract an object in a published state before they are able to edit it (unless the user is a Manager).

Our solution was to extend the workflow mechanism with versioning capabilities. The basic idea is to let low-level (or mid-level) users make their changes to a copy of the published object, while leaving the original published version untouched. When the new version is approved and published, it takes the place of the previously published version. This allows a "quiet" workflow to take place behind the published version, without the need to retract it.

For more detailed information, visit the Homepage listed below: