The Tandy CPG115 plotter had the X command to help plots axis
/* * The tandy plotter * X axis,step,interval where interval is number ticks * if axis 0 - vertical * if axis 1 - horizontal */
if you have a black and white plot with one pen thickness, using a axis and ticks reduces the clutter
Doing things the obvious way is not best. If you plot [from , to , step ] make sure step is adjusted so it goes in the intended direction. If tick is an odd number plot a tick either side of the axis. /* * ---+------+------+--- * end now end */