How does display sharing work? (i.e. a MBA using a 27" iMac as ext display)

I have a 27" iMac, and am considering a MacBook Air: one consideration in choosing the MBA (which has a smaller screen that I would choose) is that if i can use the iMac at home as ext displaym then I can live when travelling with the smaller MBA display (vs. a 15" MBP).
However, when I hook the MBA to the iMac, how do I toggle the iMac display between iMAc and the MBA?
Also, does hooking them up via MiniDP mean that the iMac keyboard and mouse will control the MBA? Or will I need to sit at my desk with two of each?
Thanks

Richard Kelly2 wrote:
However, when I hook the MBA to the iMac, how do I toggle the iMac display between iMAc and the MBA?
Type ⌘ F2
Also, does hooking them up via MiniDP mean that the iMac keyboard and mouse will control the MBA? Or will I need to sit at my desk with two of each?
You can keep your MacBook Air open and use the iMac as display #2. You will use the MacBook Air's keyboard and trackpad (or mouse) to control the machine.
You can keep the MacBook Air plugged in and closed, connect an external keyboard and external mouse/trackpad and run the MacBook Air in "closed clamshell" mode. http://support.apple.com/kb/ht3131?viewlocale=en_US
The hardest part is finding a mini display port to mini display port cable. In theory, you may be able to use the iMac's video and audio with a MacBook Air. No guarantees on that. You will need the latest spec on the cable and just finding a cable may be a challenge.

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Message was edited by: Eugene Khusainov

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SUM(

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