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acronyms/abbreviations. The classic examples were two MIT editors called EINE ("EINE Is Not EMACS") and ZWEI ("ZWEI Was EINE Initially"). More recently, there is a Scheme compiler called LIAR (Liar Imitates Apply Recursively), and GNU (q.v., sense 1) stands for "GNU's Not Unix!" and a company with the name CYGNUS, which expands to "Cygnus, Your GNU Support". See also mung, EMACS.
Red Book n. 1. Informal name for one of the three standard references on PostScript (PostScript Language Reference Manual, Adobe Systems (Addison-Wesley, 1985; QA76.73.P67P67; ISBN 0-201-10174-2, or the 1990 second edition ISBN 0-201-18127-4); the others are known as the Green Book, the Blue Book, and the White Book (sense 2). 2. Informal name for one of the 3 standard references on Smalltalk (Smalltalk-80: The Interactive Programming Environment by Adele Goldberg (Addison-Wesley, 1984; QA76.8.S635G638; ISBN 0-201-11372-4); this too is associated with blue and green books). 3. Any of the 1984 standards issued by the CCITT eighth plenary assembly. These include, among other things, the X.400 email spec and the Group 1 through 4 fax standards. 4. The new version of the Green Book (sense 4) IEEE 1003.1-1990, a.k.a ISO 9945-1 is (because of the color 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.
red wire n. [IBM] Patch wires installed by programmers who have no business mucking with the hardware. It is said that the only thing more dangerous than a hardware guy with a code patch is a softy with a soldering iron. Compare blue wire, yellow wire, purple wire.
regexp /reg'eksp/ n. [Unix] (alt. regex or reg-ex) 1. Common written and spoken abbreviation for 'regular expression', one of the wildcard patterns used, e.g., by Unix utilities such as grep(1), sed(1), and awk(1). These use conventions similar to but more elaborate than those described under glob. For purposes of this lexicon, it is sufficient to note that regexps also allow complemeneted character sets using ''; thus, one can specify 'any non-alphabetic character' with [A-Za-z]. 2. Name of a well-known PD regexp-handling package in portable C, written by reversed Usenetter Henry Spencer henry@zoo.toronto.edu.
register dancing n. Many older processor architectures suffer from a serious shortage of general-purpose registers. This is especially a problem for

 
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