NAME
colcrt - filter nroff output for CRT previewing
SYNOPSIS
colcrt [] [-2] []
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 tbl exum2.n | nroff -ms | colcrt - | more
SEE ALSO
nroff(1), troff(1), col(1), more(1), ul(1)
BUGS
Should fold underlines onto blanks even with the ‘
Can’t back up more than 102 lines.
General overstriking is lost; as a special case ‘
|-+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 colcrt command appeared in BSD 3.0 .
AVAILABILITY
The colcrt command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.
