Content Pane Tabs
Tabs on the top of the content pane display all the items you currently have open.
When more than one item is open, just click a tab to return to that item or right-click a tab and select from the following options: Open in New Window, Close, Close All But This, and Close All. You can also press Ctrl+W or Ctrl+F4 to close the active tab or click Close (X) on any content pane tab. See Close Multiple Records Simultaneously.
Right-click options differ for records in a workgroup. When you right-click the content pane tab of the primary record, your only option is to close all associated records in the workgroup. When you right-click an associated record that is the active tab, your options include Accept Changes, Cancel Changes, and Undock. See Record Workgroups.