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Dragon Book: n.

The classic text Compilers: Principles, Techniques and Tools, by Alfred V. Aho, Ravi Sethi, and Jeffrey D. Ullman (Addison-Wesley 1986; ISBN 0-201-10088-6), so called because of the cover design featuring a dragon labeled ‘complexity of compiler design’ and a knight bearing the lance ‘LALR parser generator’ among his other trappings. This one is more specifically known as the ‘Red Dragon Book’ (1986); an earlier edition, sans Sethi and titled Principles Of Compiler Design (Alfred V. Aho and Jeffrey D. Ullman; Addison-Wesley, 1977; ISBN 0-201-00022-9), was the `‘reen Dragon Book’ (1977). (Also New Dragon Book, Old Dragon Book.) The horsed knight and the Green Dragon were warily eying each other at a distance; now the knight is typing (wearing gauntlets!) at a terminal showing a video-game representation of the Red Dragon's head while the rest of the beast extends back in normal space. See also book titles.