The original cine projectors has a Maltese Cross device to get the intermittent motion to separate the film frames. Albert Speer forgot to use this cunning device when projecting the sky over Nurnberg. In Gunslinger Ed Dorn presents the Literate Projector which, when you run a film through it, projects the Idea behind it. Combine these to produce Energy.
The past tense of windmill is wind mull