From the Categories menu, click Revisions.

The Revisions page column details are as follows:
Name. Name of the revision. This column contains
highlighted links. Click on any name in this column to view the Properties
page for that object, or click
in the row to view the Properties page in a new browser
window.
Revision. The revision number or code.
Type. The type or subtype of the revision.
Title. The title of the revision.
State. The current state of the revision in
its lifecycle.
Owner. The person responsible for the revision.