CAD standards product shape data" is under development. It defines how to represent quality criteria together with measurement requirements and representation of inspection results. CAD standards CAD Standards are a set of guidelines for the way Computer-aided drafting (CAD), or (CADD) Computer Aided Design and Drawing, drawings should appear, to improve productivity and interchange of CAD documents between different offices and CAD programs, especially in architecture and engineering. Most common: Samples of standardised layers: Thickness for pens and plot: "0,13 mm Gray, 0,18 mm Red, 0,25 mm White, 0,35 mm Yellow, 0,50 mm Magenta, 0,70 mm Blue, 1,00 mm Green". In AutoCAD
Recursive acronym existing ordinary acronym is given a new explanation of what the letters stand for, or a name is turned into an acronym by giving the letters an explanation of what they stand for, in each case with the first letter standing recursively for the whole acronym. In computing, an early tradition in the hacker community (especially at MIT) was to choose acronyms and abbreviations that referred humorously to themselves or to other abbreviations. Perhaps the earliest example in this context, from 1960 the backronym "Mash Until No Good" was created to describe Mung, and a while after it was revised