→ PostScript is a page description language.

→ A "de facto" industry standard. (For what that's worth.)

→ A flexable, high level programming language.

→ An interactive, interpretive environment.

→ A high level, device independent imaging model.

→ It feels like a cross between Lisp and Forth.

→ It's weird, but it's fun and powerful.

→ PostScript is a trademark of Adobe Systems Incorporated.