PostScript is a page description language (PDL English, page description language), used in many printers and conventional manner, such as transport format graphics files in professional print shops. It is based on the work done by John Gaffney at "Evans & Sutherland" in 1976. The PostScript concept differed fundamentally by using a full programming language to describe a print image. Image that would later be printed on a laser printer or other output device quality, rather than a series of escape sequences of low level (this seems to Emacs, which exploded internal concept similar with respect to editing).
Truevision TGA, often referred to as TARGA, is a raster graphics file format created by Truevision Inc. (now part of Avid Technology). It was the native format of TARGA and VISTA boards, which were the first graphic cards for IBM-compatible PCs to support Highcolor/truecolor display. This family of graphic cards was intended for professional computer image synthesis and video editing with PCs; for this reason, usual resolutions of TGA image files match those of the NTSC and PAL video formats. TARGA is an acronym for Truevision Advanced Raster Graphics Adapter;TGA is an initialism for Truevision Graphics Adapter.