(Printer Command Language) The page description language for HP LaserJet printers. It has become a de facto standard used in many printers and typesetters. PCL Level 5, introduced with the LaserJet III in 1990, also supports Compugraphic's Intellifont scalable fonts. Starting with the LaserJet 5 in 1996, PCL Level 6 streamlines the graphics and font commands, reducing the amount of information that has to be sent to the printer. See PJL.