10.7: Select Spaces in Mission Control
Here's how to select a Space in Mission Control without leaving Mission Control.
Holding Option while clicking on a Desktop or a Full Screen application will bring that Desktop/Application into focus, but keep you in Mission Control. This is handy to move apps around Spaces without bouncing in and out of Mission Control. [crarko adds: I'm starting to really like Mission Control.]
Source: http://feeds.macosxhints.com/click.phdo?i=ba081b3559ec37b7f14ab3255423680a
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