NEQN(CT) XENIX System V NEQN(CT)
Name
neqn - Formats mathematics.
Syntax
neqn [ -dxy ] [ -fn ] [ file ] ...
checkeq [ file ] ...
Description
neqn is an nroff(CT) preprocessor for formatting mathematics
on terminals and for printers; eqn(CT) is its counterpart
for typesetting with troff(CT). Usage is almost always:
neqn file ... | nroff
If no files are specified, these programs read 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, so
they may be defined in macro packages to get centering,
numbering, etc. It is also possible to set two characters
as ``delimiters''; subsequent text between delimiters is
also treated as neqn input. Delimiters may be set to
characters x and y with the command-line argument -dxy or
(more commonly) with ``delim xy'' between .EQ and .EN. The
left and right delimiters may be identical. Delimiters are
turned off by `delim off'. All text that is neither between
delimiters nor between .EQ and .EN is passed through
untouched. Fonts can be changed globally in a document with
gfont n, or with the command-line argument -fn.
The program checkeq reports missing or unbalanced delimiters
and .EQ/.EN pairs.
Tokens within neqn are separated by spaces, tabs, newlines,
braces, double quotation marks, tildes or carets. 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, caret (^) half as
much.
See Also
eqn(CT), checkeq(CT), troff(CT), tbl(CT)
Notes
To embolden digits, parentheses, etc., it is necessary to
quote them, as in `bold ``12.3'''.
Page 1 (printed 8/7/87)
