PostScript is a page description programming language.
It is perhaps the most versatile and loved language for printers, being used in printers world-wide. It is capable of drawing to computer screens and any kind of drawing device. PostScript is interpreted, stack based and has latent typing. It somewhat resembles the computer language FORTH.
A number of programmers write PostScript programs directly for a variety of drawing applications. The NeXTSTEP Operating System, running on Intel-486 and Motorola machines, uses Display PostScript Level II to manage the display. However, PostScript programs are usually documents meant to be printed that have been generated by a program written in some compiled language.