Part 4
Where alternate spellings or pronunciations are given, _alt._ separates two possibilities with nearly equal distribution, while _var._ prefixes one that is markedly less common than the primary.
Where a term can be attributed to a particular subculture or is known to have originated there, we have tried to so indicate. Here is a list of abbreviations used in etymologies:
Amateur Packet Radio
A technical culture of ham-radio sites using AX.25 and TCP/IP for wide-area networking and BBS systems.
Berkeley
University of California at Berkeley
BBN
Bolt, Beranek & Newman
Cambridge
the university in England (not the city in Massachusetts where MIT happens to be located!)
CMU
Carnegie-Mellon University
Commodore
Commodore Business Machines
DEC
The Digital Equipment Corporation (now Compaq).
Fairchild
The Fairchild Instruments Palo Alto development group
FidoNet
See the FidoNet entry
IBM
International Business Machines
MIT
Massachusetts Institute of Technology; esp. the legendary MIT AI Lab culture of roughly 1971 to 1983 and its feeder groups, including the Tech Model Railroad Club
NRL
Naval Research Laboratories
NYU
New York University
OED
The Oxford English Dictionary
Purdue
Purdue University
SAIL
Stanford Artificial Intelligence Laboratory (at Stanford University)
SI
From _Système International_, the name for the standard conventions of metric nomenclature used in the sciences
Stanford
Stanford University
Sun
Sun Microsystems
TMRC
Some MITisms go back as far as the Tech Model Railroad Club (TMRC) at MIT c. 1960. Material marked TMRC is from "An Abridged Dictionary of the TMRC Language", originally compiled by Pete Samson in 1959
UCLA
University of California at Los Angeles
UK
the United Kingdom (England, Wales, Scotland, Northern Ireland)
Usenet
See the Usenet entry
WPI
Worcester Polytechnic Institute, site of a very active community of PDP-10 hackers during the 1970s
WWW
The World-Wide-Web.
XEROX PARC
XEROX's Palo Alto Research Center, site of much pioneering research in user interface design and networking
Yale
Yale University
Some other etymology abbreviations such as Unix and PDP-10 refer to technical cultures surrounding specific operating systems, processors, or other environments. The fact that a term is labelled with any one of these abbreviations does not necessarily mean its use is confined to that culture. In
## particular, many terms labelled `MIT' and `Stanford' are in quite
general use. We have tried to give some indication of the distribution of speakers in the usage notes; however, a number of factors mentioned in the introduction conspire to make these indications less definite than might be desirable.
A few new definitions attached to entries are marked [proposed]. These are usually generalizations suggested by editors or Usenet respondents in the process of commenting on previous definitions of those entries. These are not represented as established jargon.
Node:Format for New Entries, Next:The Jargon Lexicon, Previous:Other Lexicon Conventions, Up:Top
Format For New Entries
You can mail submissions for the Jargon File to jargon@snark.thyrsus.com.
We welcome new jargon, and corrections to or amplifications of existing entries. You can improve your submission's chances of being included by adding background information on user population and years of currency. References to actual usage via URLs and/or DejaNews pointers are particularly welcomed.
All contributions and suggestions about the Jargon File will be considered donations to be placed in the public domain as part of this File, and may be used in subsequent paper editions. Submissions may be edited for accuracy, clarity and concision.
We are looking to expand the File's range of technical specialties covered. There are doubtless rich veins of jargon yet untapped in the scientific computing, graphics, and networking hacker communities; also in numerical analysis, computer architectures and VLSI design, language design, and many other related fields. Send us your jargon!
We are not interested in straight technical terms explained by textbooks or technical dictionaries unless an entry illuminates `underground' meanings or aspects not covered by official histories. We are also not interested in `joke' entries -- there is a lot of humor in the file but it must flow naturally out of the explanations of what hackers do and how they think.
It is OK to submit items of jargon you have originated if they have spread to the point of being used by people who are not personally acquainted with you. We prefer items to be attested by independent submission from two different sites.
An HTML version of the File is available at http://www.tuxedo.org/jargon. Please send us URLs for materials related to the entries, so we can enrich the File's link structure.
The Jargon File will be regularly maintained and made available for browsing on the World Wide Web, and will include a version number. Read it, pass it around, contribute -- this is your monument!
Node:The Jargon Lexicon, Next:Appendix A, Previous:Format for New Entries, Up:Top
The Jargon Lexicon
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= 0 =
0:
1TBS:
120 reset:
2:
404:
404 compliant:
4.2:
@-party:
Node:0, Next:1TBS, Up:= 0 =
0
Numeric zero, as opposed to the letter `O' (the 15th letter of the English alphabet). In their unmodified forms they look a lot alike, and various kluges invented to make them visually distinct have compounded the confusion. If your zero is center-dotted and letter-O is not, or if letter-O looks almost rectangular but zero looks more like an American football stood on end (or the reverse), you're probably looking at a modern character display (though the dotted zero seems to have originated as an option on IBM 3270 controllers). If your zero is slashed but letter-O is not, you're probably looking at an old-style ASCII graphic set descended from the default typewheel on the venerable ASR-33 Teletype (Scandinavians, for whom Ø is a letter, curse this arrangement). (Interestingly, the slashed zero long predates computers; Florian Cajori's monumental "A History of Mathematical Notations" notes that it was used in the twelfth and thirteenth centuries.) If letter-O has a slash across it and the zero does not, your display is tuned for a very old convention used at IBM and a few other early mainframe makers (Scandinavians curse this arrangement even more, because it means two of their letters collide). Some Burroughs/Unisys equipment displays a zero with a reversed slash. Old CDC computers rendered letter O as an unbroken oval and 0 as an oval broken at upper right and lower left. And yet another convention common on early line printers left zero unornamented but added a tail or hook to the letter-O so that it resembled an inverted Q or cursive capital letter-O (this was endorsed by a draft ANSI standard for how to draw ASCII characters, but the final standard changed the distinguisher to a tick-mark in the upper-left corner). Are we sufficiently confused yet?
Node:1TBS, Next:120 reset, Previous:0, Up:= 0 =
1TBS // n.
The "One True Brace Style"; see indent style.
Node:120 reset, Next:2, Previous:1TBS, Up:= 0 =
120 reset /wuhn-twen'tee ree'set/ n.
[from 120 volts, U.S. wall voltage] To cycle power on a machine in order to reset or unjam it. Compare Big Red Switch, power cycle.
Node:2, Next:404, Previous:120 reset, Up:= 0 =
2 infix.
In translation software written by hackers, infix 2 often represents the syllable to with the connotation `translate to': as in dvi2ps (DVI to PostScript), int2string (integer to string), and texi2roff (Texinfo to [nt]roff). Several versions of a joke have floated around the internet in which some idiot programmer fixes the Y2K bug by changing all the Y's in something to K's, as in Januark, Februark, etc.
Node:404, Next:404 compliant, Previous:2, Up:= 0 =
404 // n.
[from the HTTP error "file not found on server"] Extended to humans to convey that the subject has no idea or no clue - sapience not found. May be used reflexively; "Uh, I'm 404ing" means "I'm drawing a blank".
Node:404 compliant, Next:4.2, Previous:404, Up:= 0 =
404 compliant adj.
The status of a website which has been completely removed, usually by the administrators of the hosting site as a result of net abuse by the website operators. The term is a tongue-in-cheek reference to the standard "301 compliant" Murkowski Bill disclaimer used by spammers. See also: spam, spamvertize.
Node:4.2, Next:@-party, Previous:404 compliant, Up:= 0 =
4.2 /for' poynt too'/ n.
Without a prefix, this almost invariably refers to BSD Unix release 4.2. Note that it is an indication of cluelessness to say "version 4.2", and "release 4.2" is rare; the number stands on its own, or is used in the more explicit forms 4.2BSD or (less commonly) BSD 4.2. Similar remarks apply to "4.3", "4.4" and to earlier, less-widespread releases 4.1 and 2.9.
Node:@-party, Next:abbrev, Previous:4.2, Up:= 0 =
@-party /at'par`tee/ n.
[from the @-sign in an Internet address] (alt. `@-sign party' /at'si:n par`tee/) A semi-closed party thrown for hackers at a science-fiction convention (esp. the annual World Science Fiction Convention or "Worldcon"); one must have a network address to get in, or at least be in company with someone who does. One of the most reliable opportunities for hackers to meet face to face with people who might otherwise be represented by mere phosphor dots on their screens. Compare boink.
The first recorded @-party was held at the Westercon (a U.S. western regional SF convention) over the July 4th weekend in 1980. It is not clear exactly when the canonical @-party venue shifted to the Worldcon but it had certainly become established by Constellation in 1983. Sadly, the @-party tradition has been in decline since about 1996, mainly because having an @-address no longer functions as an effective lodge pin.
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abbrev:
ABEND:
accumulator:
ACK:
Acme:
acolyte:
ad-hockery:
Ada:
address harvester:
adger:
admin:
ADVENT:
AFAIK:
AFJ:
AFK:
AI:
AI-complete:
AI koans:
AIDS:
AIDX:
airplane rule:
Alderson loop:
aliasing bug:
Alice and Bob:
all-elbows:
alpha geek:
alpha particles:
alt:
alt bit:
Aluminum Book:
ambimouseterous:
Amiga:
Amiga Persecution Complex:
amoeba:
amp off:
amper:
Angband:
angle brackets:
angry fruit salad:
annoybot:
annoyware:
ANSI:
ANSI standard:
ANSI standard pizza:
AOL!:
app:
arena:
arg:
ARMM:
armor-plated:
asbestos:
asbestos cork award:
asbestos longjohns:
ASCII:
ASCII art:
ASCIIbetical order:
astroturfing:
atomic:
attoparsec:
AUP:
autobogotiphobia:
automagically:
avatar:
awk:
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abbrev /*-breev'/, /*-brev'/ n.
Common abbreviation for `abbreviation'.
Node:ABEND, Next:accumulator, Previous:abbrev, Up:= A =
ABEND /a'bend/, /*-bend'/ n.
[ABnormal END] 1. Abnormal termination (of software); crash; lossage. Derives from an error message on the IBM 360; used jokingly by hackers but seriously mainly by code grinders. Usually capitalized, but may appear as `abend'. Hackers will try to persuade you that ABEND is called `abend' because it is what system operators do to the machine late on Friday when they want to call it a day, and hence is from the German `Abend' = `Evening'. 2. [_alt.callahans_] Absent By Enforced Net Deprivation - used in the subject lines of postings warning friends of an imminent loss of Internet access. (This can be because of computer downtime, loss of provider, moving or illness.) Variants of this also appear: ABVND = `Absent By Voluntary Net Deprivation' and ABSEND = `Absent By Self-Enforced Net Deprivation' have been sighted.
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accumulator n. obs.
1. Archaic term for a register. On-line use of it as a synonym for `register' is a fairly reliable indication that the user has been around for quite a while and/or that the architecture under discussion is quite old. The term in full is almost never used of microprocessor registers, for example, though symbolic names for arithmetic registers beginning in `A' derive from historical use of the term `accumulator' (and not, actually, from `arithmetic'). Confusingly, though, an `A' register name prefix may also stand for `address', as for example on the Motorola 680x0 family. 2. A register being used for arithmetic or logic (as opposed to addressing or a loop index), especially one being used to accumulate a sum or count of many items. This use is in context of a particular routine or stretch of code. "The FOOBAZ routine uses A3 as an accumulator." 3. One's in-basket (esp. among old-timers who might use sense 1). "You want this reviewed? Sure, just put it in the accumulator." (See stack.)
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ACK /ak/ interj.
1. [common; from the ASCII mnemonic for 0000110] Acknowledge. Used to register one's presence (compare mainstream Yo!). An appropriate response to ping or ENQ. 2. [from the comic strip "Bloom County"] An exclamation of surprised disgust, esp. in "Ack pffft!" Semi-humorous. Generally this sense is not spelled in caps (ACK) and is distinguished by a following exclamation point. 3. Used to politely interrupt someone to tell them you understand their point (see NAK). Thus, for example, you might cut off an overly long explanation with "Ack. Ack. Ack. I get it now". 4. An affirmative. "Think we ought to ditch that damn NT server for a Linux box?" "ACK!"
There is also a usage "ACK?" (from sense 1) meaning "Are you there?", often used in email when earlier mail has produced no reply, or during a lull in talk mode to see if the person has gone away (the standard humorous response is of course NAK (sense 1), i.e., "I'm not here").
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Acme n.
The canonical supplier of bizarre, elaborate, and non-functional gadgetry - where Rube Goldberg and Heath Robinson (two cartoonists who specialized in elaborate contraptions) shop. The name has been humorously expanded as A (or American) Company Making Everything. (In fact, Acme was a real brand sold from Sears Roebuck catalogs in the early 1900s.) Describing some X as an "Acme X" either means "This is insanely great", or, more likely, "This looks insanely great on paper, but in practice it's really easy to shoot yourself in the foot with it." Compare pistol.
This term, specially cherished by American hackers and explained here for the benefit of our overseas brethren, comes from the Warner Brothers' series of "Roadrunner" cartoons. In these cartoons, the famished Wile E. Coyote was forever attempting to catch up with, trap, and eat the Roadrunner. His attempts usually involved one or more high-technology Rube Goldberg devices - rocket jetpacks, catapults, magnetic traps, high-powered slingshots, etc. These were usually delivered in large cardboard boxes, labeled prominently with the Acme name. These devices invariably malfunctioned in improbable and violent ways.
Node:acolyte, Next:ad-hockery, Previous:Acme, Up:= A =
acolyte n. obs.
[TMRC] An OSU privileged enough to submit data and programs to a member of the priesthood.
Node:ad-hockery, Next:Ada, Previous:acolyte, Up:= A =
ad-hockery /ad-hok'*r-ee/ n.
[Purdue] 1. Gratuitous assumptions made inside certain programs, esp. expert systems, which lead to the appearance of semi-intelligent behavior but are in fact entirely arbitrary. For example, fuzzy-matching of input tokens that might be typing errors against a symbol table can make it look as though a program knows how to spell. 2. Special-case code to cope with some awkward input that would otherwise cause a program to choke, presuming normal inputs are dealt with in some cleaner and more regular way. Also called `ad-hackery', `ad-hocity' (/ad-hos'*-tee/), `ad-crockery'. See also ELIZA effect.
Node:Ada, Next:address harvester, Previous:ad-hockery, Up:= A =
Ada n.
A Pascal-descended language that was at one time made mandatory for Department of Defense software projects by the Pentagon. Hackers are nearly unanimous in observing that, technically, it is precisely what one might expect given that kind of endorsement by fiat; designed by committee, crockish, difficult to use, and overall a disastrous, multi-billion-dollar boondoggle (one common description wss "The PL/I of the 1980s"). Hackers find Ada's exception-handling and inter-process communication features particularly hilarious. Ada Lovelace (the daughter of Lord Byron who became the world's first programmer while cooperating with Charles Babbage on the design of his mechanical computing engines in the mid-1800s) would almost certainly blanch at the use to which her name has latterly been put; the kindest thing that has been said about it is that there is probably a good small language screaming to get out from inside its vast, elephantine bulk.
Node:address harvester, Next:adger, Previous:Ada, Up:= A =
address harvester n.
A robot that searches web pages and/or filters netnews traffic looking for valid email addresses. Some address harvesters are benign, used only for compiling address directories. Most, unfortunately, are run by miscreants compiling address lists to spam. Address harvesters can be foiled by a teergrube.
Node:adger, Next:admin, Previous:address harvester, Up:= A =
adger /aj'r/ vt.
[UCLA mutant of nadger, poss. also from the middle name of an infamous tenured graduate student] To make a bonehead move with consequences that could have been foreseen with even slight mental effort. E.g., "He started removing files and promptly adgered the whole project". Compare dumbass attack.
Node:admin, Next:ADVENT, Previous:adger, Up:= A =
admin /ad-min'/ n.
Short for `administrator'; very commonly used in speech or on-line to refer to the systems person in charge on a computer. Common constructions on this include `sysadmin' and `site admin' (emphasizing the administrator's role as a site contact for email and news) or `newsadmin' (focusing specifically on news). Compare postmaster, sysop, system mangler.
Node:ADVENT, Next:AFAIK, Previous:admin, Up:= A =
ADVENT /ad'vent/ n.
The prototypical computer adventure game, first designed by Will Crowther on the PDP-10 in the mid-1970s as an attempt at computer-refereed fantasy gaming, and expanded into a puzzle-oriented game by Don Woods at Stanford in 1976. (Woods had been one of the authors of INTERCAL.) Now better known as Adventure or Colossal Cave Adventure, but the TOPS-10 operating system permitted only six-letter filenames. See also vadding, Zork, and Infocom.
This game defined the terse, dryly humorous style since expected in text adventure games, and popularized several tag lines that have become fixtures of hacker-speak: "A huge green fierce snake bars the way!" "I see no X here" (for some noun X). "You are in a maze of twisty little passages, all alike." "You are in a little maze of twisty passages, all different." The `magic words' xyzzy and plugh also derive from this game.
Crowther, by the way, participated in the exploration of the Mammoth & Flint Ridge cave system; it actually has a `Colossal Cave' and a `Bedquilt' as in the game, and the `Y2' that also turns up is cavers' jargon for a map reference to a secondary entrance.
ADVENT sources are available for FTP at ftp://ftp.wustl.edu/doc/misc/if-archive/games/source/advent.tar.Z.
Node:AFAIK, Next:AFJ, Previous:ADVENT, Up:= A =
AFAIK // n.
[Usenet] Abbrev. for "As Far As I Know".
Node:AFJ, Next:AFK, Previous:AFAIK, Up:= A =
AFJ // n.
Written-only abbreviation for "April Fool's Joke". Elaborate April Fool's hoaxes are a long-established tradition on Usenet and Internet; see kremvax for an example. In fact, April Fool's Day is the only seasonal holiday consistently marked by customary observances on Internet and other hacker networks.
Node:AFK, Next:AI, Previous:AFJ, Up:= A =
AFK
[MUD] Abbrev. for "Away From Keyboard". Used to notify others that you will be momentarily unavailable online. eg. "Let's not go kill that frost giant yet, I need to go AFK to make a phone call". Often MUDs will have a command to politely inform others of your absence when they try to talk with you. The term is not restricted to MUDs, however, and has become common in many chat situations, from IRC to Unix talk.
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AI /A-I/ n.
Abbreviation for `Artificial Intelligence', so common that the full form is almost never written or spoken among hackers.
Node:AI-complete, Next:AI koans, Previous:AI, Up:= A =
AI-complete /A-I k*m-pleet'/ adj.
[MIT, Stanford: by analogy with `NP-complete' (see NP-)] Used to describe problems or subproblems in AI, to indicate that the solution presupposes a solution to the `strong AI problem' (that is, the synthesis of a human-level intelligence). A problem that is AI-complete is, in other words, just too hard.
Examples of AI-complete problems are `The Vision Problem' (building a system that can see as well as a human) and `The Natural Language Problem' (building a system that can understand and speak a natural language as well as a human). These may appear to be modular, but all attempts so far (1999) to solve them have foundered on the amount of context information and `intelligence' they seem to require. See also gedanken.
Node:AI koans, Next:AIDS, Previous:AI-complete, Up:= A =
AI koans /A-I koh'anz/ pl.n.
A series of pastiches of Zen teaching riddles created by Danny Hillis at the MIT AI Lab around various major figures of the Lab's culture (several are included under Some AI Koans in Appendix A). See also ha ha only serious, mu, and hacker humor.
Node:AIDS, Next:AIDX, Previous:AI koans, Up:= A =
AIDS /aydz/ n.
Short for A* Infected Disk Syndrome (`A*' is a glob pattern that matches, but is not limited to, Apple or Amiga), this condition is quite often the result of practicing unsafe SEX. See virus, worm, Trojan horse, virgin.
Node:AIDX, Next:airplane rule, Previous:AIDS, Up:= A =
AIDX /ayd'k*z/ n.
Derogatory term for IBM's perverted version of Unix, AIX, especially for the AIX 3.? used in the IBM RS/6000 series (some hackers think it is funnier just to pronounce "AIX" as "aches"). A victim of the dreaded "hybridism" disease, this attempt to combine the two main currents of the Unix stream (BSD and USG Unix) became a monstrosity to haunt system administrators' dreams. For example, if new accounts are created while many users are logged on, the load average jumps quickly over 20 due to silly implementation of the user databases. For a quite similar disease, compare HP-SUX. Also, compare Macintrash, Nominal Semidestructor, ScumOS, sun-stools.
Node:airplane rule, Next:Alderson loop, Previous:AIDX, Up:= A =
airplane rule n.
"Complexity increases the possibility of failure; a twin-engine airplane has twice as many engine problems as a single-engine airplane." By analogy, in both software and electronics, the rule that simplicity increases robustness. It is correspondingly argued that the right way to build reliable systems is to put all your eggs in one basket, after making sure that you've built a really good basket. See also KISS Principle, elegant.
Node:Alderson loop, Next:aliasing bug, Previous:airplane rule, Up:= A =
Alderson loop n.
[Intel] A special version of an infinite loop where there is an exit condition available, but inaccessible in the current implementation of the code. Typically this is created while debugging user interface code. An example would be when there is a menu stating, "Select 1-3 or 9 to quit" and 9 is not allowed by the function that takes the selection from the user.
This term received its name from a programmer who had coded a modal message box in MSAccess with no Ok or Cancel buttons, thereby disabling the entire program whenever the box came up. The message box had the proper code for dismissal and even was set up so that when the non-existent Ok button was pressed the proper code would be called.
Node:aliasing bug, Next:Alice and Bob, Previous:Alderson loop, Up:= A =
aliasing bug n.