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I read somewhere that the pattern displayed by the CM-5 in the film was referred to as 'common and pleasing #6', as close as I can recall it. I've not seen a definition of the pattern other than it's actual output.

IIRC on CM-1/2 the LEDs reflected state of conditional execution of the individual VLSI packages (there is one LED per package, not one LED per CPU), on CM-5 it is just a bunch of LED matrices controlled more or less globally by I assume some BMC-like thing.

People who programmed those machines said that people often asked for programs that used those LED matrices as a display.