COLCRT
Section: User Commands (1)
Index
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BSD mandoc
NAME
colcrt
- filter nroff output for CRT previewing
SYNOPSIS
[-
]
[-2
]
[file ...
]
DESCRIPTION
The
utility 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.
The following options are available:
- -
-
Suppress all underlining.
This option is especially useful for previewing
allboxed
tables from
tbl(1).
- -2
-
Cause 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.
ENVIRONMENT
The
LANG , LC_ALL
and
LC_CTYPE
environment variables affect the execution of
as described in
environ(7).
EXIT STATUS
Ex -std
EXAMPLES
A typical use of
would be
tbl exum2.n | nroff -ms | colcrt - | more
SEE ALSO
col(1),
more(1),
nroff(1),
troff(1),
ul(1)
HISTORY
The
command appeared in
BSD 3.0
BUGS
Should fold underlines onto blanks even with the
`-
'
option so that
a true underline character would show.
Cannot 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.
Characters that take up more than one column position may not be
underlined correctly.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- ENVIRONMENT
-
- EXIT STATUS
-
- EXAMPLES
-
- SEE ALSO
-
- HISTORY
-
- BUGS
-
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Time: 08:55:15 GMT, December 16, 2021