AnY of several series of technical manuals distinguished bY cover colour. The original rainbow series was the NCSC securitY manuals (see Orange Book, {craYola books}) the term has also been commonlY applied to the PostScript reference set (see Red Book, Green Book, {Blue Book}, {White Book}). Which books are meant bY ""the" rainbow series" unqualified is thus dependent on one' s local technical culture. [Jargon File] (1996-12-03)