Nick Bilton of the New York Times stumbled on this story by calling to pester the Federal Aviation Administration about its antiquated rules surrounding the use of electronic devices during taxi, takeoff, and landing (and our perennial favorite, sitting on the runway for hours). Instead of giving him the runaround, the FAA unexpectedly changed its tune, saying that it has decided to take a fresh look at the use of personal electronics on planes. follow link
Enter Dashboard, Expose, or Spaces Temporarily
Hold down F9, F10, F11, or F12 (or whatever you've set for the Expose and Spaces keyboard shortcuts) for a few seconds, and then release the key to enter and leave the appropriate mode without having to press the key again. This is particularly useful for Dashboard, in which you can check the contents of a widget and then return to your work with only a single key press.
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FAA to Review Electronics Use on Planes