Name
colcrt — filter nroff output for CRT previewing
Synopsis
colcrt [−] [2] [ file... ]
DESCRIPTION
Colcrt provides
virtual half-line and reverse line feed sequences for
terminals without such capability, and on which overstriking
is destructive. Half-line characters and underlining (changed
to dashing `−') are placed on new lines in between the
normal output lines.
Available options:
−-
Suppress all underlining. This option is especially
useful for previewing allboxed tables from
tbl(1).
- -2
-
Causes all half-lines to be printed, effectively
double spacing the output. Normally, a minimal space
output format is used which will suppress empty lines.
The program never suppresses two consecutive empty
lines, however. The -2 option is useful for
sending output to the line printer when the output
contains superscripts and subscripts which would
otherwise be invisible.
EXAMPLES
A typical use of colcrt would be
BUGS
Should fold underlines onto blanks even with the 'Fl'
option so that a true underline character would show.
Can't back up more than 102 lines.
General overstriking is lost; as a special case '|'
overstruck with '−' or underline becomes '+'.
Lines are trimmed to 132 characters.
Some provision should be made for processing superscripts
and subscripts in documents which are already
double-spaced.
HISTORY
The command appeared in BSD3.0.
Copyright (c) 1980, 1990, 1993
The Regents of the University of California. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. All advertising materials mentioning features or use of this software
must display the following acknowledgement:
This product includes software developed by the University of
California, Berkeley and its contributors.
4. Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
@(#)colcrt.1
8.1 (Berkeley) 6/30/93
|
