deadzone - Return the center if within the threshold
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 loadrt deadzone [count=N|names=name1[,name2...]]  | 
deadzone.N (requires a floating-point thread)
Update out based on in and the parameters.
deadzone.N.in
float in 
deadzone.N.out float out
deadzone.N.center float rw (default: 0.0)
The center of the dead zone
deadzone.N.threshhold float rw (default: 1.0)
The dead zone is center ± (threshhold/2)
GPL