Tonya Engst discusses raising children in the age of screentime as part of the “Parenting in the Mobile Internet Age” panel discussion from Macworld | iWorld 2012, moderated by Chuck Joiner of MacVoicesTV.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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MacVoicesTV Parenting Panel from Macworld | iWorld