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CentOS 7.0 - man page for colcrt (centos section 1)

COLCRT(1)					    User Commands					    COLCRT(1)

NAME
colcrt - filter nroff output for CRT previewing
SYNOPSIS
colcrt [options] [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.
OPTIONS
-, --no-underlining Suppress all underlining. This option is especially useful for previewing allboxed tables from tbl(1). -2, --half-lines 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. -V, --version Output version information and exit. -h, --help Output help and exit.
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 '-' 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 dou- ble-spaced.
HISTORY
The colcrt command appeared in 3.0BSD.
AVAILABILITY
The colcrt command is part of the util-linux package and is available from Linux Kernel Archive <ftp:// ftp.kernel.org/pub/linux/utils/util-linux/>. util-linux September 2011 COLCRT(1)


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