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

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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.  Nor-
	      mally, 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 char-
       acter 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 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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