colcrt(1) - phpMan

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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