Help System (web edition)

XJITTER=x_step YJITTER=y_step
randomize data points in plotting a scatter diagram by positioning
a point (x,y) randomly in a rectangle with the left upper corner
(x-x_step,y+y_step) and the right lower corner (x+x_step,y-y_step).
This trick makes the plot more informative by slightly moving
(jittering) overlapping points.

Suitable jitter steps may be found by the MINSTAT operation, for example.