PLT (PLT)
PLT (also HPGL) is the standard language for printing line drawings created by Hewlett-Packard. HPGL is supported by many CAD programs, charting programs and word processors.
LEADTOOLS supports HPGL and HPGL/2.
For HPGL files, you can read the following bits per pixel: 4.
For HPGL/2 files, you can read the following bits per pixel: 4.