High Quality Content by WIKIPEDIA articles! A page description language (PDL) is a language that describes the appearance of a printed page in a higher level than an actual output bitmap. An overlapping term is printer control language, but it should not be confused as referring solely to Hewlett-Packard`s PCL. PostScript, one of the most noted page description languages, is a fully fledged programming language, but many PDLs are not complete enough to be considered a programming language. The markup language adaption of the PDL is the page description markup language.