The Ribbon contains the Home tab.
Double-click a tab name to hide or show the ribbon.
Home Tab

Tag Browser: Opens the Tag Browser.
Allow Edits: Allows edits to be made to the Process area of a tag and allows the Rollup check boxes to be checked and unchecked in the Tags tab window.
Update: Apply changes to Centerline and close window.
Cancel: Undo changes and close window.