Blue Book n.
1. Informal name for one of the four standard references on
the page-layout and graphics-control language PostScript ("PostScript Language Tutorial
and Cookbook", Adobe Systems, Addison-Wesley 1985,
QA76.73.P67P68, ISBN 0-201-10179-3); the other three official
guides are known as the Green
Book, the Red Book, and
the White Book (sense 2). 2.
Informal name for one of the three standard references on
Smalltalk: "Smalltalk-80: The Language and its Implementation",
David Robson, Addison-Wesley 1983, QA76.8.S635G64, ISBN
0-201-11371-63 (this book also has green and red siblings). 3.
Any of the 1988 standards issued by the CCITT's ninth plenary
assembly. These include, among other things, the X.400 email spec
and the Group 1 through 4 fax standards. See also book titles.