More than anything you want to know where the manual to the Proxima 5600 video projector is. It's here. The trick to turning it off seems to be that there are TWO sets of fans. So you turn it off and a minute later the really loud fans go off. But the other fans are still going when you flip the switch on the back of the thing. So there.
hold the "command" button while dragging. ⌘
Press this button to make everything OK.