KB User's Guide - Documents Tab - TinyMCE Content Restore Plugin
Content Restore 
The Content Restore plugin is found under the Tools menu. It is a way to easily recover document versions that have been changed. Instead of having to completely roll back to a previous version of a document, you have the option to only roll back a single document field to a previous version. When rolling back, there are several fields to choose from:
- Revision - the revision to roll back to
- Restore title
- Restore keywords
- Restore summary
- Restore body
- Restore internal Notes