hp-gl

from The Free On-line Dictionary of Computing (8 July 2008)

Hewlett-Packard Graphics Language
HP-GL

   <graphics, language> (HP-GL) A {vector graphics} language used
   by {HP} plotters.

   [Details?  On-line spec?]

   (1994-10-27)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

HPGL
       Hewlett Packard Graphics Language (CAD, CAM, HP)