Flashnux

GNU/Linux man pages

Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)

Unix

Unix v6

eqn(1)



delim $$ eqn typeset mathematics [ file ] ... is a troff (I) preprocessor for typesetting mathematics on the Graphics Systems phototypesetter. Usage is almost always eqn file ... | troff If no files are specified, reads from the standard input. 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 or defined by so you can define them yourself to get centering, numbering, etc. All other lines are treated as comments, and passed through untouched. Spaces, tabs, newlines, braces, double quotes, tilde and circumflex are the only delimiters. Braces ‘‘{}’’ are used for grouping. Use tildes ‘‘~’’ to get extra spaces in an equation. Subscripts and superscripts are produced with the keywords and Thus makes $x sub i$, produces $a sub i sup 2$, and gives $e sup {x sup 2 + y sup 2}$. Fractions are made with is $a over b$ and is $1 over sqrt {ax sup 2 +bx+c}$ . makes square roots. The keywords and introduce lower and upper limits on arbitrary things: $lim from {n-> inf} sum from 0 to n x sub i$ is made with Left and right brackets, braces, etc., of the right height are made with and produces $left [ x sup 2 + y sup 2 over alpha right ] ~=~1$. The clause is optional. Vertical piles of things are made with and produces $pile {a above b above c}$. There can be an arbitrary number of elements in a pile. left-justifies, and center, with different vertical spacing, and right justifies. Diacritical marks are made with is $x dot = f(t) bar$. Default sizes and fonts can be changed with and various of and Keywords like ( sum ) ( int ) ( inf ) and shorthands like >= (>=) > (->), != ( != ), are recognized. Spell out Greek letters in the desired case, as in Mathematical words like sin, cos, log are made Roman automatically. Troff (I) four-character escapes like \(bs () can be used anywhere. Strings enclosed in double quotes "..." are passed through untouched. A System for Typesetting Mathematics (Computer Science Technical Report #17, Bell Laboratories, 1974.)
TROFF Users’ Manual (internal memorandum)
TROFF Made Trivial (internal memorandum)

troff (I), neqn (I) Undoubtedly. Watch out for small or large point sizes it’s tuned too well for size 10. Be cautious if inserting horizontal or vertical motions, and of backslashes in general.



eqn(1)