eqn(1) - Plan 9 from User Space

From adc93f6097615f16d57e8a24a256302f2144ec4e Mon Sep 17 00:00:00 2001 From: rsc Date: Fri, 14 Jan 2005 17:37:50 +0000 Subject: cut out the html - they're going to cause diffing problems. --- man/man1/eqn.html | 203 ------------------------------------------------------ 1 file changed, 203 deletions(-) delete mode 100644 man/man1/eqn.html (limited to 'man/man1/eqn.html') diff --git a/man/man1/eqn.html b/man/man1/eqn.html deleted file mode 100644 index 3d819235..00000000 --- a/man/man1/eqn.html +++ /dev/null @@ -1,203 +0,0 @@ - -eqn(1) - Plan 9 from User Space - - - - -

EQN(1) EQN(1) -

- -

- - -


	- - delim $$ - -

- -

NAME
- -
- - eqn – typeset mathematics
- -
-

SYNOPSIS
- -
- - eqn [ option ... ] [ file ... ]
- -
-

DESCRIPTION
- -
- - Eqn is a troff(1) preprocessor for typesetting mathematics on - a typesetter. Usage is almost always
- -
- - eqn file ... | troff - - - -
- If no files are specified, eqn reads from the standard input. - Eqn prepares output for the typesetter named in the −Tdest option - (default −Tutf; see troff(1)). When run with other preprocessor - filters, eqn usually comes last. -
- - A line beginning with .EQ marks the start of an equation; the - end of an equation is marked by a line beginning with .EN. Neither - of these lines is altered, so they may be defined in macro packages - to get centering, numbering, etc. It is also possible to set two - characters as ‘delimiters’; text between delimiters is also - eqn input. Delimiters may be set to characters x and y with the - option −dxy or (more commonly) with delim xy between .EQ and .EN. - Left and right delimiters may be identical. (They are customarily - taken to be $font L "$$" )$. Delimiters are turned off by delim - off. All text that is neither between delimiters - nor between .EQ and .EN is passed through untouched. -
- - Tokens within eqn are separated by spaces, tabs, newlines, braces, - double quotes, tildes or circumflexes. Braces {} are used for - grouping; generally speaking, anywhere a single character like - x could appear, a complicated construction enclosed in braces - may be used instead. Tilde ~ represents a full space in the - output, circumflex ^ half as much. -
- - Subscripts and superscripts are produced with the keywords sub - and sup. Thus x sub i makes $x sub i$, a sub i sup 2 produces - $a sub i sup 2$, and e sup {x sup 2 + y sup 2} gives $e sup {x - sup 2 + y sup 2}$. -
- - Over makes fractions: a over b yields $a over b$. -
- - Sqrt produces square roots: 1 over sqrt {ax sup 2 +bx+c} results - in $1 over sqrt {ax sup 2 +bx+c}$ . -
- - The keywords from and to introduce lower and upper limits on arbitrary - things: $lim from {n -> inf} sum from 0 to n x sub i$ is made with - lim from {n −> inf} sum from 0 to n x sub i. -
- - Left and right brackets, braces, etc., of the right height are - made with left and right: left [ x sup 2 + y sup 2 over alpha - right ] ~=~1 produces $left [ x sup 2 + y sup 2 over alpha right - ] ~=~1$. The right clause is optional. Legal characters after - left and right are braces, brackets, - bars, c and f for ceiling and floor, and "" for nothing at all (useful - for a right-side-only bracket). -
- - Vertical piles of things are made with pile, lpile, cpile, and - rpile: pile {a above b above c} produces $pile {a above b above - c}$. There can be an arbitrary number of elements in a pile. lpile - left-justifies, pile and cpile center, with different vertical - spacing, and rpile right justifies. -
- - Matrices are made with matrix: matrix { lcol { x sub i above y - sub 2 } ccol { 1 above 2 } } produces $matrix { lcol { x sub i - above y sub 2 } ccol { 1 above 2 } }$. In addition, there is rcol - for a right-justified column. -
- - Diacritical marks are made with prime, dot, dotdot, hat, tilde, - bar, under, vec, dyad, and under: x sub 0 sup prime = f(t) bar - + g(t) under is $x sub 0 sup prime = f(t) bar + g(t) under$, and - x vec = y dyad is $x vec = y dyad$. -
- - Sizes and fonts can be changed with prefix operators size n, size - ±n, fat, roman, italic, bold, or font n. Size and fonts can be - changed globally in a document by gsize n and gfont n, or by the - command-line arguments −sn and −fn. -
- - Normally subscripts and superscripts are reduced by 3 point sizes - from the previous size; this may be changed by the command-line - argument −pn. -
- - Successive display arguments can be lined up. Place mark before - the desired lineup point in the first equation; place lineup at - the place that is to line up vertically in subsequent equations. - -
- - Shorthands may be defined or existing keywords redefined with - define: define thing % replacement % defines a new token called - thing which will be replaced by replacement whenever it appears - thereafter. The % may be any character that does not occur in - replacement. -
- - Keywords like sum ( sum ), int ( int ), inf ( inf ), and shorthands - like >= (>=), −> (->), and != ( != ) are recognized. Greek letters - are spelled out in the desired case, as in alpha or GAMMA. Mathematical - words like sin, cos, log are made Roman automatically. Troff(1) - four-character escapes like \(lh (<=) can - be used anywhere. Strings enclosed in double quotes " " are passed - through untouched; this permits keywords to be entered as text, - and can be used to communicate with troff when all else fails.
- -
-

FILES
- -
- - /sys/lib/troff/font/devutf font descriptions for PostScript
- -
-

SOURCE
- -
- - /usr/local/plan9/src/cmd/eqn - -
-

SEE ALSO
- -
- - troff(1), tbl(1)
- J. F. Ossanna and B. W. Kernighan, “Troff User’s Manual”.
- B. W. Kernighan and L. L. Cherry, “Typesetting Mathematics--User’s - Guide”, Unix Research System Programmer’s Manual, Tenth Edition, - Volume 2.
- -
-

BUGS
- -
- - To embolden digits, parens, etc., it is necessary to quote them, - as in bold "12.3". delim off
- -
- -

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