NO_SIGN can be used to hide the sign of the number. For example you have negative values but you want to display it as positive.
In order to show you the behaviour of this settings, I’ve manipulated the distance of the flight in the demo program by multiplying it by -1.
Figure 46 ZDEMO_AIN_CL21 Select
Figure 47 ZDEMO_AIN_CL21 Without NO_SIGN option
Figure 48 ZDEMO_AIN_CL21 With NO_SIGN option