Green Book

Green Book n.  1. One of the three standard {{PostScript}}
   references: "PostScript Language Program Design", bylined
   `Adobe Systems' (Addison-Wesley, 1988; QA76.73.P67P66 ISBN
   0-201-14396-8); see also {Red Book}, {Blue Book}, and the
   {White Book} (sense 2).  2. Informal name for one of the three
   standard references on SmallTalk "Smalltalk-80 Bits of
   History, Words of Advice", by Glenn Krasner (Addison-Wesley, 1983;
   QA76.8.S635S58; ISBN 0-201-11669-3) (this, too, is associated with
   blue and red books).  3. The "X/Open Compatibility Guide",
   which defines an international standard {{UNIX}} environment that
   is a proper superset of POSIX/SVID; also includes descriptions of a
   standard utility toolkit, systems administrations features, and the
   like.  This grimoire is taken with particular seriousness in
   Europe.  See {Purple Book}.  4. The IEEE 1003.1 POSIX Operating
   Systems Interface standard has been dubbed "The Ugly Green Book".
   5. Any of the 1992 standards issued by the CCITT's tenth plenary
   assembly.  These include, among other things, the X.400 email
   standard and the Group 1 through 4 fax standards.  See also
   {{book titles}}.