The Revision command allows you to create a new revision of the CAD document in the Windchill Workspace. In the Windchill Workgroup Manager client, click File > New > Revision, or click on the toolbar.
You can also revise a CAD document in the Commonspace. To revise, select and right-click the document in the Commonspace and then, on the context menu, select Revise.
on the toolbar.