Detached views are views that are shown in a separate window with a smaller trim. They work like other views except they they are always shown in front of the Workbench window.
To detach a view:
To restore the view to be shown inside of the Workbench window, drag it into the Workbench window.
You can also detach a view by selecting Detached from the context menu that opens when you click the icon at the left side of the view's title bar.
Views
Detached views
Perspectives
Opening views
Moving and docking views
Saving a user-defined perspective
Resetting perspectives