Simply move the cursor to the left or right edge of the screen, and your desktop will extend past the limits of your monitor.
This will only happen when there is an open window on the desktop. This way you can switch between views and return to the desktop without minimizing the window.
With GiMeSpace, you can have several windows open and browse between them just by moving the mouse. It's like having an additional monitor. To turn GiMeSpace off, just press the lock key (Bl Des) and the windows will stop extending your screen. You can start it again by pressing 'End'.