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content (such as the Internet Engineering Task Force mailing list), others (like the 'sf-lovers' list maintained for many years by Saul Jaffe) are recreational, and many are purely social. Perhaps the most infamous of the social lists was the eccentric bandykin distribution; its latter-day progeny, lectroids and tanstaafl, still include a number of the oddest and most interesting people in hackerdom.
Mailing lists are easy to create and (unlike Usenet) don't tie up a significant amount of machine resources (until they get very large, at which point they can become interesting torture tests for mail software). Thus, they are often created temporarily by working groups, the members of which can then collaborate on a project without ever needing to meet face-to-face. Much of the material in this lexicon was criticized and polished on just such a mailing list (called 'jargon-friends'), which included all the co-authors of Steele-1983.
main loop n. The top-level control flow construct in an input- or event-driven program, the one which receives and acts or dispatches on the program's input. See also driver.
mainframe n. Term originally referring to the cabinet containing the central processor unit or 'main frame' of a room-filling Stone Age batch machine. After the emergence of smaller 'minicomputer' designs in the early 1970s, the traditional big iron machines were described as 'mainframe computers' and eventually just as mainframes. The term carries the connotation of a machine designed for batch rather than interactive use, though possibly with an interactive timesharing operating system retrofitted onto it; it is especially used of machines built by IBM, Unisys, and the other great dinosaurs surviving from computing's Stone Age.
It has been common wisdom among hackers since the late 1980s that the mainframe architectural tradition is essentially dead (outside of the tiny market for number-crunching supercomputers (see cray)), having been swamped by the recent huge advances in IC technology and low-cost personal computing. As of 1993, corporate America is just beginning to figure this out the wave of failures, takeovers, and mergers among traditional mainframe makers have certainly provided sufficient omens (see dinosaurs mating and killer micro).
management n. 1. Corporate power elites distinguished primarily by their distance from actual productive work and their chronic failure to manage (see also suit). Spoken derisively, as in "Management decided that ".

 
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