“DUPLEX” is a bidirectional version of “DIRECT” (the classical Space Sim flight model)

– Your spacecraft can move FORWARD and BACKWARD
– AFTERBURNER is out. Its control is used to change direction
– You can TURN left/right/up/down directly, like driving a car
– You can TURN and ROLL any direction having zero speed
– All forward turns have mirrored duplicates for backward movements
– Very useful to fly inside tunnels and in dense asteroid fields

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