Can I close my MBA while running an external monitor?

I'd like to drive a 27" external monitor, using a bluetooth mouse and keyboard. Can I do this and close the laptop? Macbook Air or Macbook Pro?
Thanks for any help.

Yes, it's called Clamshell mode.  Here are the rules:
http://support.apple.com/kb/HT3131
Regards,
Captfred

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