.TH DEROFF 1 
.SH NAME
deroff, delatex \- remove formatting requests
.SH SYNOPSIS
.B deroff
[
.I option ...
]
.I file ...
.PP
.B delatex
.I file
.SH DESCRIPTION
.I Deroff
reads each file in sequence
and removes all
.I nroff
and
.MR troff (1)
requests and non-text arguments, backslash constructions,
and constructs of preprocessors such as
.MR eqn (1) ,
.MR pic (1) ,
and
.MR tbl (1) .
Remaining text is written on the standard output.
.I Deroff
follows files included by
.L .so
and
.L .nx
commands;
if a file has already been included, a
.L .so
for that file is ignored and a
.L .nx
terminates execution.
If no input file is given,
.I deroff
reads from standard input.
.PP
The options are
.TP
.B -w
Output a word list, one `word' (string of letters, digits, and
properly embedded ampersands and apostrophes,
beginning with a letter) per line.
Other characters are skipped.
Otherwise, the output follows the original, with the deletions mentioned above.
.TP
.B -_
Like
.BR -w ,
but consider underscores to be alphanumeric rather than punctuation.
.TP
.B -i
Ignore
.L .so
and
.L .nx
requests.
.TP
.BR -ms
.PD0
.TP
.B -mm
Remove titles, attachments, etc., as well as ordinary 
.IR troff
constructs, from
.MR ms (7)
or
.I mm
documents.
.PD
.TP
.B -ml
Same as
.BR -mm ,
but remove lists as well.
.PP
.I Delatex
does for
.I tex
and
.I latex
(see
.MR tex (1) )
files what
.B deroff -wi
does for
.I troff
files.
.SH SOURCE
.B \*9/src/cmd/deroff.c
.br
.B \*9/src/cmd/delatex.lx
.SH "SEE ALSO"
.IR troff (1), 
.MR tex (1) ,
.MR spell (1)
.SH BUGS
These filters are not complete interpreters of
.I troff
or
.IR tex .
For example, macro definitions containing
.L \e$
cause chaos in
.IR deroff
when the popular
.L $$
delimiters for
.I eqn
are in effect. 
.PP
Text inside macros is emitted at place of
definition, not place of call.