From 78e51a8c6678b6e3dff3d619aa786669f531f4bc Mon Sep 17 00:00:00 2001 From: rsc Date: Fri, 14 Jan 2005 03:45:44 +0000 Subject: checkpoint --- man/man1/eqn.html | 203 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 203 insertions(+) create mode 100644 man/man1/eqn.html (limited to 'man/man1/eqn.html') diff --git a/man/man1/eqn.html b/man/man1/eqn.html new file mode 100644 index 00000000..3d819235 --- /dev/null +++ b/man/man1/eqn.html @@ -0,0 +1,203 @@ + +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
+ +
+ +

 +
+
+ + +
+
+
+Space Glenda +
+
+ + -- cgit v1.2.3