The hpgl driver produces HPGL output for devices like the HP7475A plotter. There are two options which can be set---the number of pens and "eject", which tells the plotter to eject a page when done. The default is to use 6 pens and not to eject the page when done.
The international character sets ISO-8859-1 and CP850 are recognized via set encoding iso_8859_1 or set encoding cp850 (see set encoding for details).
Syntax:
set terminal hpgl {<number_of_pens>} {eject}
The selection
set terminal hpgl 8 eject
is equivalent to the previous hp7550 terminal, and the selection
set terminal hpgl 4
is equivalent to the previous hp7580b terminal.
The pcl5 driver supports the Hewlett-Packard Laserjet III. It actually uses HPGL-2, but there is a name conflict among the terminal devices. It has several options
Syntax:
set terminal pcl5 {<mode>} {<font>} {<fontsize>}
where <mode> is landscape, or portrait, <font> is stick, univers, or cg_times, and <fontsize> is the size in points.
With pcl5 international characters are handled by the printer; you just put the appropriate 8-bit character codes into the text strings. You don't need to bother with set encoding.
HPGL graphics can be imported by many software packages.