1.6. Versioning, history and reverting content
Makes it easy to see who has been working on a document, who added what, and gives you the ability to revert to earlier revisions of the document if necessary.
With the versioning support in Plone, you can:
- Get a full version history of your edits
- Compare certain revisions of your document with others
- Revert to an earlier version of the document

It also keeps track of who made which change, and when it was performed.
