1. Informal name for one of the four standard references on PostScript. The other three official guides are known as the Blue Book, the Green Book, and the White Book.

["PostScript Language Reference Manual", Adobe Systems, Addison-Wesley, 1985 (ISBN 0-201-10174-2); second edition 1990 (ISBN 0-201-18127-4)].

2. Informal name for one of the three standard references on Smalltalk. This book also has blue and green siblings.

["Smalltalk-80: The Interactive Programming Environment", Adele Goldberg, Addison-Wesley, 1984; (ISBN 0-201-11372-4)].

3. Any of the 1984 standards issued by the ITU-T eighth plenary assembly. These include, among other things, the X.400 electronic mail specification, the Group 1 through 4 fax standards, ISDN, the R2 signalling system (Q.400 series recommendations), data communication via the PSTN (the V series recommendations) and tariffs and metering principles (the D series).

4. The new version of the Green Book - IEEE 1003.1-1990, also known as ISO 9945-1 - is (because of the colour and the fact that it is printed on A4 paper) known in the USA. as "the Ugly Red Book That Won't Fit On The Shelf" and in Europe as "the Ugly Red Book That's A Sensible Size".

5. The NSA "Trusted Network Interpretation" companion to the Orange Book.

See also book titles.

[Jargon File]