... today. The f90 standard added an intrinsic named SCALE. SCALE1, SYMBOL1, PLOT1, AXIS1, the ones I used always had the 1. I...wrote a Fortran PLOT1 to run a different plotter, without rewriting SYMBOL1 and AXIS1. I had it running fine. Someone else tried ... different compiler, and it didn't work. It seems that SYMBOL1 calls PLOT1 (both originally in assembler) assuming register 0 is ...