Man Colcrt en anglais
COLCRT(1)                 BSD General Commands Manual                COLCRT(1)

 

NAME


     colcrt - filter nroff output for CRT previewing

 

SYNOPSIS


     colcrt [-] [-2] [file ...]

 

DESCRIPTION






     The colcrt utility provides virtual half-line and reverse line feed
     sequences for terminals without such capability, and on which overstrik-
     ing 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.

 

EXAMPLES


     A typical use of colcrt would be

     tbl exum2.n | nroff -ms | colcrt - | more

 

SEE ALSO


     col(1), more(1), nroff(1), troff(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 double-spaced.

 

HISTORY


     The colcrt command appeared in 3.0BSD.

BSD                              June 30, 1993                             BSD