Users can focus on a set of windows and maximize them to cover the whole screen. This is particularly useful when users are expecting to work on a set of windows for a long time. With the maximize operation, users can use more of the screen estate, avoiding the loss of screen space due to nesting.
In Figure 8, the user maximizes the UMD window under OldMail group window.
Figure 8: UMD window is maximized to work more easily.