was using a 8 pen-plotter.
so application codes all colours using 8 pens assignment in HPGL/2.

now bought new HP Designjet 500.
thinking of expanding the colour range on the paper.

HPGL/2 seems to be able to select 8 default color pens by PC(pen_number).
possible to use PC(9 n above)?
colour assignments for integer 9 n above?