Revisions

Drupal lets you create a new revision every time content is updated. This allows you to track how the content has changed over time on your site. To view and manage revisions, use the Revisions tab at the top of the page when viewing content.

From the Revisions tab, you can view the individual revisions, revert to an earlier revision, and delete revisions.

Another useful feature of the revision system is the Revision log message field, which appears near the Create a new revision check box on the content editing form. If you add a message to the Revision log message field when saving a revision, that message will appear on the Revisions tab along with the revision. It is a good idea to add a meaningful Revision log message whenever you create a content revision, so others can see what you changed and why, without having to actually view the previous revision.