Defining a Hot Corner
You can define each corner of the screen as a hot corner to make your Macintosh do one of the following:
Start Screen Saver or Disable Screen Saver Turns on the screensaver right away without waiting for the screensaver's inactivity period (or prevents the screensaver from running)
All Windows Displays all windows as thumbnail images on the screen (equivalent to pressing F9)
Application Windows Displays thumbnail images of windows belonging to the currently active program (equivalent to pressing F10)
Desktop Hides all windows (equivalent to pressing F11)
Dashboard Loads or hides the Dashboard program (equivalent to pressing F12)
Sleep Display Puts Display to sleep
Here's how to define a hot corner:
Click the Apple menu and select ...
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