Can built-in (primary) LCD sleep while Secondary LCD is awake and active?

I am not sure how this iMac video-out works on the new Intel iMacs?
Can I buy a 30" LCD TV and hook it up to my iMac and have it mirror it but have the built-in LCD sleep? No need for 2 mirrors to run?
OR
Have both LCD's act as an extended screen but have the secondary do screen savers while the primary sleeps?

I don't believe that you can separately sleep the monitors. I don't have an intel iMac yet, but I've not been able to do this on prior macs.
Glor

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    Message was edited by:
    bce_developer

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