Looking for a way to roll back edits to text edits in the body of nodes/pages in Drupal.
There are two steps required, as far as I know, anyway. Setting options for new nodes, and configuring permissions to make the revisions visible.
Default Node Options
Log on to your Drupal installation and go to Administer, Content Management and Content Types.
Select a content type (say, Page) and press edit.
Look for the heading Workflow Settings and set the default options for this content type. Turn on "Create New Revision".
Go to Administer, User Management and Permissions.
Under "Node Module" look for these permissions:
Hope this helps.
By default, Drupal makes it possible to store your edits to a node as a new revision instead of overwriting the original. You can enhance that functionality with extra modules like Diff.