New way to reveal the desktop

Another way to see the desktop when it is crowded with open windows is to use the Show Desktop tool. It is the blank upright rectangle at the end of the Taskbar. (If you have your Taskbar on one of the sides of the screen, the tool is at the bottom.) Hover your mouse pointer on this area and all the open windows become transparent with the windows outlined. Move your mouse away and everything returns.
There is also a keyboard shortcut to do the same thing. It is:
     Windows key + Spacebar