A method for displaying a plurality of windows on a display screen is described. The method includes steps of associating a first window with at least one second window, the at least one second window being independent of and external to the first window, and combining the first window and the at least one second window into a common window on a display screen, the first window and the at least one second window being configured to share a common window frame. An indicator may appear on the display as a target region when a user desires to associate the first and the second windows. Subsequent operations performed on the common window are performed automatically on any underlying window. For example, when a user chooses to save the contents of the common window, the contents of all of the windows of the common window may be saved.