HP Forums

Of all the user programs written for the HP41, how come there are very few if any,  written for the HP 7470A  plotter with the HP-IL interface using the plotter module?

HPGL is just text, and you can write your own programs and don't need the plotter module, although I suspect it has functions in Mcode so it would run faster. There's a related topic at http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv019.cgi?read=148248 .

Probably because it was sooo slow? Here you can see it in action ...