Postscript is a sophisticated page description language (PDL), developed by Adobe Systems Incorporated, that is used for high- quality printing on laser printers and other high-resolution printing devices. Postscript is capable of describing the entire appearance of a richly formatted page, including layout, fonts, graphics, and scanned images. Although postscript is a programming language and one can learn to write page descriptions in it, programs generate code on-the-fly and the code goes to a display device (such as a printer, slide recorder, imagesetter, screen display, or printer), where an interpreter follows the coded instructions to generate an image of the page precisely according to these instructions. See page description language (PDL), font, and printer.