TICKTURN specification (in PLOT operation) By default, the (longer) tick lines indicating the scale notations on the coordinate axis are drawn outside the graph area. This convention can be changed by the TICKTURN specification. TICKTURN does have no effect on shorter tick lines specified by TICK and TICK2. Those ticks appear always inside the graph area. TICKTURN=-1 draws the longer scale notation ticks inside the graph area. In general, TICKTURN=x draws tick lines of length x times the default length (or the length determined by TICKLENGTH) and the sign of x indicates the direction. Default is TICKTURN=1. P = more information on plotting