The Jargon Lexicon
= A =
=====
abbrev: /*-breev'/, /*-brev'/ n. Common abbreviation for
`abbreviation'.
ABEND: /o'bend/, /*-bend'/ n. [ABnormal END] Abnormal
termination (of software); {crash}; {lossage}. Derives from
an error message on the IBM 360; used jokingly by hackers but
seriously mainly by {code grinder}s. 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'.
accumulator: n. 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}.)
ACK: /ak/ interj. 1. [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".
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 2), i.e., "I'm not here").
Acme: n. The canonical supplier of bizarre, elaborate and
non-functional gadgetry -- where Rube Goldberg and Heath Robinson
shop. 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 Wyl 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 violent and improbable ways.
acolyte: n.,obs. [TMRC] An {OSU} privileged enough to submit data
and programs to a member of the {priesthood}.
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 against
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}.
Ada:: n. A {{Pascal}}-descended language that has been 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 is "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.
adger: /aj'r/ vt. [UCLA mutant of {nadger}] 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}.
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}.
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. Now better known as 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.
AFAIK: n. [Usenet] Abbrev. for "As Far As I Know".
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
marked by customary observances on the hacker networks.
AI: /A-I/ n. Abbreviation for `Artificial Intelligence',
so common that the full form is almost never written or spoken
among hackers.
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 (1993) to solve them have
foundered on the amount of context information and `intelligence'
they seem to require. See also {gedanken}.
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 {AI Koans} in Appendix A). See also {ha ha
only serious}, {mu}, and {{Humor, Hacker}}.
AIDS: /aydz/ n. Short for A* Infected Disk Syndrome (`A*'
is a {glob} pattern that matches, but is not limited to, Apple),
this condition is quite often the result of practicing unsafe
{SEX}. See {virus}, {worm}, {Trojan horse},
{virgin}.
AIDX: n. /aydkz/ 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}, {Open DeathTrap},
{ScumOS}, {sun-stools}.
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}.
aliasing bug: n. A class of subtle programming errors that
can arise in code that does dynamic allocation, esp. via
`malloc(3)' or equivalent. If several pointers address
(`aliases for') a given hunk of storage, it may happen that the
storage is freed or reallocated (and thus moved) through one alias
and then referenced through another, which may lead to subtle (and
possibly intermittent) lossage depending on the state and the
allocation history of the malloc {arena}. Avoidable by use of
allocation strategies that never alias allocated core, or by use of
higher-level languages, such as {LISP}, which employ a garbage
collector (see {GC}). Also called a {stale pointer bug}.
See also {precedence lossage}, {smash the stack},
{fandango on core}, {memory leak}, {memory smash},
{overrun screw}, {spam}.
Historical note Though this term is nowadays associated with
C programming, it was already in use in a very similar sense in the
Algol-60 and FORTRAN communities in the 1960s.
all-elbows: adj. [MS-DOS] Of a TSR
(terminate-and-stay-resident) IBM PC program, such as the N
pop-up calendar and calculator utilities that circulate on {BBS}
systems: unsociable. Used to describe a program that rudely steals
the resources that it needs without considering that other TSRs may
also be resident. One particularly common form of rudeness is
lock-up due to programs fighting over the keyboard interrupt. See
{rude}, also {mess-dos}.
alpha particles: n. See {bit rot}.
alt: /awlt/ 1. n. The alt shift key on an IBM PC or
{clone} keyboard; see {bucky bits}, sense 2 (though typical
PC usage does not simply set the 0200 bit). 2. n. The `clover'
or `Command' key on a Macintosh; use of this term usually reveals
that the speaker hacked PCs before coming to the Mac (see also
{feature key}). Some Mac hackers, confusingly, reserve `alt'
for the Option key (and it is so labeled on some Mac II keyboards).
3. n.obs. [PDP-10; often capitalized to ALT] Alternate name for
the ASCII ESC character (ASCII 0011011), after the keycap labeling
on some older terminals; also `altmode' (/awlt'mohd/). This
character was almost never pronounced `escape' on an ITS system,
in {TECO}, or under TOPS-10 -- always alt, as in "Type alt alt
to end a TECO command" or "alt-U onto the system" (for "log
onto the [ITS] system"). This usage probably arose because alt is
more convenient to say than `escape', especially when followed by
another alt or a character (or another alt *and* a character,
for that matter). 3. The alt hierarchy on Usenet, the tree of
newsgroups created by users without a formal vote and approval
procedure. There is a myth, not entirely, implausible, that
alt is acronymic for "anarchists, lunatics, and terrorists";
but in fact it is simply short for "alternative".
alt bit: /awlt bit/ [from alternate] adj. See {meta
bit}.
altmode: n. Syn. {alt} sense 3.
Aluminum Book: n. [MIT] "Common LISP: The Language", by
Guy L. Steele Jr. (Digital Press, first edition 1984, second
edition 1990). Note that due to a technical screwup some printings
of the second edition are actually of a color the author describes
succinctly as "yucky green". See also {{book titles}}.
amoeba: n. Humorous term for the Commodore Amiga personal
computer.
amp off: vt. [Purdue] To run in {background}. From the
UNIX shell `&' operator.
amper: n. Common abbreviation for the name of the ampersand
(`&', ASCII 0100110) character. See {{ASCII}} for other synonyms.
angle brackets: n. Either of the characters `<' (ASCII
0111100) and `>' (ASCII 0111110) (ASCII less-than or
greater-than signs). Typographers in the {Real World} use angle
brackets which are either taller and slimmer (the ISO `Bra' and
`Ket' characters), or significantly smaller (single or double
guillemets) than the less-than and greater-than signs.
See {broket}, {{ASCII}}.
angry fruit salad: n. A bad visual-interface design that
uses too many colors. (This term derives, of course, from the
bizarre day-glo colors found in canned fruit salad.) Too often one
sees similar effects from interface designers using color window
systems such as {X}; there is a tendency to create displays that
are flashy and attention-getting but uncomfortable for long-term
use.
annoybot: /*-noy-bot/ n. [IRC] See {robot}.
ANSI: n. /an'see/ 1. n. The American National Standards
Institue. ANSI, along with the International Standards Organization
(ISO) standardized the C programming language (see {K&R},
{Classic C}), and promulgates many other important software
standards. 2. n. [BBS] The set of screen-painting codes that most
MS-DOS and Amiga computers accept. This comes from the ANSI.SYS
device driver that must be loaded on an MS-DOS computer to view
such codes. Unfortunately, neither DOS ANSI nor the BBS ANSIs
derived from it exactly match the ANSI terminal standard. For
example, the ESC-[1m code turns on the bold highlight on large
machines, but in IBM PC/MS-DOS ANSI, it turns on `intense' (bright)
colors. Also, in BBS-land, the term `ANSI' is often used to imply
that a particular computer uses or can emulate the IBM high-half
character set from MS-DOS. Particular use depends on
context. Occasionally, the vanilla ASCII character set is used with
the color codes, but on BBSs, ANSI and `IBM characters' tend to go
together.
AOS: 1. /aws/ (East Coast), /ay-os/ (West Coast)
vt.,obs. To increase the amount of something. "AOS the
campfire." [based on a PDP-10 increment instruction] Usage:
considered silly, and now obsolete. Now largely supplanted by
{bump}. See {SOS}. 2. n. A {{Multics}}-derived OS
supported at one time by Data General. This was pronounced
/A-O-S/ or /A-os/. A spoof of the standard AOS system
administrator's manual ("How to Load and Generate your AOS
System") was created, issued a part number, and circulated as
photocopy folklore; it was called "How to Goad and Levitate
your CHAOS System". 3. n. Algebraic Operating System, in reference
to those calculators which use infix instead of postfix (reverse
Polish) notation. 4. A {BSD}-like operating system for the IBM
RT.
Historical note: AOS in sense 1 was the name of a {PDP-10}
instruction that took any memory location in the computer and added
1 to it; AOS meant `Add One and do not Skip'. Why, you may ask,
does the `S' stand for `do not Skip' rather than for `Skip'? Ah,
here was a beloved piece of PDP-10 folklore. There were eight such
instructions: AOSE added 1 and then skipped the next instruction
if the result was Equal to zero; AOSG added 1 and then skipped if
the result was Greater than 0; AOSN added 1 and then skipped
if the result was Not 0; AOSA added 1 and then skipped Always;
and so on. Just plain AOS didn't say when to skip, so it never
skipped.
For similar reasons, AOJ meant `Add One and do not Jump'. Even
more bizarre, SKIP meant `do not SKIP'! If you wanted to skip the
next instruction, you had to say `SKIPA'. Likewise, JUMP meant
`do not JUMP'; the unconditional form was JUMPA. However, hackers
never did this. By some quirk of the 10's design, the {JRST}
(Jump and ReSTore flag with no flag specified) was actually faster
and so was invariably used. Such were the perverse mysteries of
assembler programming.
app: /ap/ n. Short for `application program', as opposed
to a systems program. Apps are what systems vendors are forever
chasing developers to create for their environments so they can
sell more boxes. Hackers tend not to think of the things they
themselves run as apps; thus, in hacker parlance the term excludes
compilers, program editors, games, and messaging systems, though a
user would consider all those to be apps. (Broadly, an app is
often a self-contained environment for performing some well-defined
task such as `word processing'; hackers tend to prefer more
general-purpose tools.) Oppose {tool}, {operating system}.
arena: [UNIX] n. The area of memory attached to a process by
`brk(2)' and `sbrk(2)' and used by `malloc(3)' as
dynamic storage. So named from a `malloc: corrupt arena'
message emitted when some early versions detected an impossible
value in the free block list. See {overrun screw}, {aliasing
bug}, {memory leak}, {memory smash}, {smash the stack}.
arg: /arg/ n. Abbreviation for `argument' (to a
function), used so often as to have become a new word (like
`piano' from `pianoforte'). "The sine function takes 1 arg,
but the arc-tangent function can take either 1 or 2 args."
Compare {param}, {parm}, {var}.
ARMM: n. [acronym, `Automated Retroactive Minimal
Moderation'] A Usenet robot created by Dick Depew of Munroe Falls,
Ohio. ARMM was intended to automatically cancel posts from
anonymous-posting sites. Unfortunately, the robot's recognizer for
anonymous postings triggered on its own automatically-generated
control messages! Transformed by this stroke of programming
ineptitude into a monster of Frankensteinian proportions, it broke
loose on the night of March 31, 1993 and proceeded to {spam}
news.admin.policy with a recursive explosion of over 200
messages.
ARMM's bug produced a recursive {cascade} of messages each of which
mechanically added text to the ID and Subject and some other
headers of its parent. This produced a flood of messages in which
each header took up several screens and each message ID and subject
line got longer and longer and longer.
Reactions varied from amusement to outrage. The pathological
messages crashed at least one mail system, and upset people paying
line charges for their Usenet feeds. One poster described the ARMM
debacle as "instant Usenet history" (also establishing the term
{despew}), and it has since been widely cited as a cautionary
example of the havoc the combination of good intentions and
incompetence can wreak on a network. Compare {Great Worm, the};
{sorcerer's apprentice mode}. See also {software laser},
{network meltdown}.
armor-plated: n. Syn. for {bulletproof}.
asbestos: adj. Used as a modifier to anything intended to
protect one from {flame}s; also in other highly
{flame}-suggestive usages. See, for example, {asbestos
longjohns} and {asbestos cork award}.
asbestos cork award: n. Once, long ago at MIT, there was a
{flamer} so consistently obnoxious that another hacker designed,
had made, and distributed posters announcing that said flamer had
been nominated for the `asbestos cork award'. (Any reader in
doubt as to the intended application of the cork should consult the
etymology under {flame}.) Since then, it is agreed that only a
select few have risen to the heights of bombast required to earn
this dubious dignity -- but there is no agreement on *which*
few.
asbestos longjohns: n. Notional garments donned by
{Usenet} posters just before emitting a remark they expect will
elicit {flamage}. This is the most common of the {asbestos}
coinages. Also `asbestos underwear', `asbestos overcoat', etc.
ASCII:: /as'kee/ n. [acronym: American Standard Code for
Information Interchange] The predominant character set encoding of
present-day computers. The modern version uses 7 bits for each
character, whereas most earlier codes (including an early version
of ASCII) used fewer. This change allowed the inclusion of
lowercase letters -- a major {win} -- but it did not provide
for accented letters or any other letterforms not used in English
(such as the German sharp-S
or the ae-ligature
which is a letter in, for example, Norwegian). It could be worse,
though. It could be much worse. See {{EBCDIC}} to understand how.
Computers are much pickier and less flexible about spelling than
humans; thus, hackers need to be very precise when talking about
characters, and have developed a considerable amount of verbal
shorthand for them. Every character has one or more names -- some
formal, some concise, some silly. Common jargon names for ASCII
characters are collected here. See also individual entries for
{bang}, {excl}, {open}, {ques}, {semi}, {shriek},
{splat}, {twiddle}, and {Yu-Shiang Whole Fish}.
This list derives from revision 2.3 of the Usenet ASCII
pronunciation guide. Single characters are listed in ASCII order;
character pairs are sorted in by first member. For each character,
common names are given in rough order of popularity, followed by
names that are reported but rarely seen; official ANSI/CCITT names
are surrounded by brokets: <>. Square brackets mark the
particularly silly names introduced by {INTERCAL}. The
abbreviations "l/r" and "o/c" stand for left/right and
"open/close" respectively. Ordinary parentheticals provide some
usage information.
!
Common: {bang}; pling; excl; shriek; .
Rare: factorial; exclam; smash; cuss; boing; yell; wow; hey;
wham; eureka; [spark-spot]; soldier.
"
Common: double quote; quote. Rare: literal mark;
double-glitch; ; ; dirk;
[rabbit-ears]; double prime.
#
Common: number sign; pound; pound sign; hash; sharp;
{crunch}; hex; [mesh]. Rare: grid; crosshatch; octothorpe;
flash; , pig-pen; tictactoe; scratchmark; thud;
thump; {splat}.
$
Common: dollar; . Rare: currency symbol; buck;
cash; string (from BASIC); escape (when used as the echo of
ASCII ESC); ding; cache; [big money].
%
Common: percent; ; mod; grapes. Rare:
[double-oh-seven].
&
Common: ; amper; and. Rare: address (from C);
reference (from C++); andpersand; bitand; background (from
`sh(1)'); pretzel; amp. [INTERCAL called this `ampersand';
what could be sillier?]
'
Common: single quote; quote; . Rare: prime;
glitch; tick; irk; pop; [spark]; ; .
( )
Common: l/r paren; l/r parenthesis; left/right; open/close;
paren/thesis; o/c paren; o/c parenthesis; l/r parenthesis;
l/r banana. Rare: so/already; lparen/rparen;
; o/c round bracket, l/r round
bracket, [wax/wane]; parenthisey/unparenthisey; l/r ear.
*
Common: star; [{splat}]; . Rare: wildcard; gear;
dingle; mult; spider; aster; times; twinkle; glob (see
{glob}); {Nathan Hale}.
+
Common: ; add. Rare: cross; [intersection].
,
Common: . Rare: ; [tail].
-
Common: dash; ; . Rare: [worm]; option; dak;
bithorpe.
.
Common: dot; point; ; . Rare: radix
point; full stop; [spot].
/
Common: slash; stroke; ; forward slash. Rare:
diagonal; solidus; over; slak; virgule; [slat].
:
Common: . Rare: dots; [two-spot].
;
Common: ; semi. Rare: weenie; [hybrid],
pit-thwong.
< >
Common: ; bra/ket; l/r angle; l/r angle
bracket; l/r broket. Rare: from/{into, towards}; read
from/write to; suck/blow; comes-from/gozinta; in/out;
crunch/zap (all from UNIX); [angle/right angle].
=
Common: ; gets; takes. Rare: quadrathorpe;
[half-mesh].
?
Common: query; ; {ques}. Rare: whatmark;
[what]; wildchar; huh; hook; buttonhook; hunchback.
@
Common: at sign; at; strudel. Rare: each; vortex; whorl;
[whirlpool]; cyclone; snail; ape; cat; rose; cabbage;
.
V
Rare: [book].
[ ]
Common: l/r square bracket; l/r bracket; ; bracket/unbracket. Rare: square/unsquare; [U
turn/U turn back].
\
Common: backslash; escape (from C/UNIX); reverse slash;
slosh; backslant; backwhack. Rare: bash; ;
reversed virgule; [backslat].
^
Common: hat; control; uparrow; caret; . Rare:
chevron; [shark (or shark-fin)]; to the (`to the power of');
fang; pointer (in Pascal).
_
Common: ; underscore; underbar; under. Rare:
score; backarrow; skid; [flatworm].
`
Common: backquote; left quote; left single quote; open
quote; ; grave. Rare: backprime; [backspark];
unapostrophe; birk; blugle; back tick; back glitch; push;
; quasiquote.
{ }
Common: o/c brace; l/r brace; l/r squiggly; l/r squiggly
bracket/brace; l/r curly bracket/brace; . Rare: brace/unbrace; curly/uncurly; leftit/rytit;
l/r squirrelly; [embrace/bracelet].
|
Common: bar; or; or-bar; v-bar; pipe; vertical bar. Rare:
; gozinta; thru; pipesinta (last three from
UNIX); [spike].
~
Common: ; squiggle; {twiddle}; not. Rare: approx;
wiggle; swung dash; enyay; [sqiggle (sic)].
The pronunciation of `#' as `pound' is common in the U.S.
but a bad idea; {{Commonwealth Hackish}} has its own, rather more
apposite use of `pound sign' (confusingly, on British keyboards
the pound graphic
happens to replace `#'; thus Britishers sometimes
call `#' on a U.S.-ASCII keyboard `pound', compounding the
American error). The U.S. usage derives from an old-fashioned
commercial practice of using a `#' suffix to tag pound weights
on bills of lading. The character is usually pronounced `hash'
outside the U.S.
The `uparrow' name for circumflex and `leftarrow' name for
underline are historical relics from archaic ASCII (the 1963
version), which had these graphics in those character positions
rather than the modern punctuation characters.
The `swung dash' or `approximation' sign is not quite the same
as tilde in typeset material
but the ASCII tilde serves for both (compare {angle
brackets}).
Some other common usages cause odd overlaps. The `#',
`$', `>', and `&' characters, for example, are all
pronounced "hex" in different communities because various
assemblers use them as a prefix tag for hexadecimal constants (in
particular, `#' in many assembler-programming cultures,
`$' in the 6502 world, `>' at Texas Instruments, and
`&' on the BBC Micro, Sinclair, and some Z80 machines). See
also {splat}.
The inability of ASCII text to correctly represent any of the
world's other major languages makes the designers' choice of 7 bits
look more and more like a serious {misfeature} as the use of
international networks continues to increase (see {software
rot}). Hardware and software from the U.S. still tends to embody
the assumption that ASCII is the universal character set and that
characters have 7 bits; this is a a major irritant to people who
want to use a character set suited to their own languages.
Perversely, though, efforts to solve this problem by proliferating
`national' character sets produce an evolutionary pressure to use
a *smaller* subset common to all those in use.
ASCII art: n. The fine art of drawing diagrams using the
ASCII character set (mainly `|', `-', `/', `\',
and `+'). Also known as `character graphics' or `ASCII
graphics'; see also {boxology}. Here is a serious
example:
o----)||(--+--|<----+ +---------o + D O
L )||( | | | C U
A I )||( +-->|-+ | +-\/\/-+--o - T
C N )||( | | | | P
E )||( +-->|-+--)---+--)|--+-o U
)||( | | | GND T
o----)||(--+--|<----+----------+
A power supply consisting of a full wave rectifier circuit
feeding a capacitor input filter circuit
Figure 1.
And here are some very silly examples:
|\/\/\/| ____/| ___ |\_/| ___
| | \ o.O| ACK! / \_ |` '| _/ \
| | =(_)= THPHTH! / \/ \/ \
| (o)(o) U / \
C _) (__) \/\/\/\ _____ /\/\/\/
| ,___| (oo) \/ \/
| / \/-------\ U (__)
/____\ || | \ /---V `v'- oo )
/ \ ||---W|| * * |--| || |`. |_/\
//-o-\\
____---=======---____
====___\ /.. ..\ /___==== Klingons rule OK!
// ---\__O__/--- \\
\_\ /_/
Figure 2.
There is an important subgenre of ASCII art that puns on the
standard character names in the fashion of a rebus.
+--------------------------------------------------------+
| ^^^^^^^^^^^^ |
| ^^^^^^^^^^^ ^^^^^^^^^ |
| ^^^^^^^^^^^^^ ^^^^^^^^^^^^^ |
| ^^^^^^^ B ^^^^^^^^^ |
| ^^^^^^^^^ ^^^ ^^^^^^^^^^^^^^ |
+--------------------------------------------------------+
" A Bee in the Carrot Patch "
Figure 3.
Within humorous ASCII art, there is for some reason an entire
flourishing subgenre of pictures of silly cows. Four of these are
reproduced in Figure 2; here are three more:
(__) (__) (__)
(\/) ($$) (**)
/-------\/ /-------\/ /-------\/
/ | 666 || / |=====|| / | ||
* ||----|| * ||----|| * ||----||
~~ ~~ ~~ ~~ ~~ ~~
Satanic cow This cow is a Yuppie Cow in love
Figure 4.
There is a newsgroup, alt.ascii.art, devoted to this
genre; however, see also {warlording}.
ASCIIbetical order: /as'kee-be'-t*-kl or'dr/ adj.,n. Used
to indicate that data is sorted in ASCII collated order rather than
alphabetical order. This lexicon is sorted in something close to
ASCIIbetical order, but with case ignored and entries beginning
with non-alphabetic characters moved to the end.
atomic: adj. [from Gk. `atomos', indivisible]
1. Indivisible; cannot be split up. For example, an instruction
may be said to do several things `atomically', i.e., all the
things are done immediately, and there is no chance of the
instruction being half-completed or of another being interspersed.
Used esp. to convey that an operation cannot be screwed up by
interrupts. "This routine locks the file and increments the
file's semaphore atomically." 2. [primarily techspeak] Guaranteed
to complete successfully or not at all, usu. refers to database
transactions. If an error prevents a partially-performed
transaction from proceeding to completion, it must be "backed out,"
as the database must not be left in an inconsistent state.
Computer usage, in either of the above senses, has none of the
connotations that `atomic' has in mainstream English (i.e. of
particles of matter, nuclear explosions etc.).
attoparsec: n. About an inch. `atto-' is the standard SI
prefix for multiplication by 10^(-18). A parsec
(parallax-second) is 3.26 light-years; an attoparsec is thus
3.26 * 10^(-18) light years, or about 3.1 cm (thus, 1
attoparsec/{microfortnight} equals about 1 inch/sec). This unit
is reported to be in use (though probably not very seriously) among
hackers in the U.K. See {micro-}.
autobogotiphobia: /aw'toh-boh-got`*-foh'bee-*/ n. See
{bogotify}.
automagically: /aw-toh-maj'i-klee/ adv. Automatically, but
in a way that, for some reason (typically because it is too
complicated, or too ugly, or perhaps even too trivial), the speaker
doesn't feel like explaining to you. See {magic}. "The
C-INTERCAL compiler generates C, then automagically invokes
`cc(1)' to produce an executable."
avatar: n. Syn. [CMU, Tektronix] {root}, {superuser}.
There are quite a few UNIX machines on which the name of the
superuser account is `avatar' rather than `root'. This quirk
was originated by a CMU hacker who disliked the term
`superuser', and was propagated through an ex-CMU hacker at
Tektronix.
awk: /awk/ 1. n. [UNIX techspeak] An interpreted language
for massaging text data developed by Alfred Aho, Peter Weinberger,
and Brian Kernighan (the name derives from their initials). It is
characterized by C-like syntax, a declaration-free approach to
variable typing and declarations, associative arrays, and
field-oriented text processing. See also {Perl}. 2. n.
Editing term for an expression awkward to manipulate through normal
{regexp} facilities (for example, one containing a
{newline}). 3. vt. To process data using `awk(1)'.