col(1)                           DG/UX 5.4.2                          col(1)


NAME
       col - filter reverse line feeds

SYNOPSIS
       col [ -bfpx ]

DESCRIPTION
       Col reads from the standard input and writes onto the standard
       output.  It performs the line overlays implied by reverse line feeds
       (ASCII code ESC-7), and by forward and reverse half-line feeds (ESC-9
       and ESC-8).  Col is particularly useful for filtering multicolumn
       output made with the .rt command of nroff and output resulting from
       the tbl(1) preprocessor.

       Options are:

       -b      No backspacing.  If two or more characters are to appear in
               the same place, only the last one read will be output.

       -f      Fine-adjust half-line motions.  Although col accepts
               half-line forward motions in its input, it outputs them as
               full-line motions  unless you specify -f.  Reverse half-line
               motions (and all other reverse line motions) are still
               ignored.

       -x      Do not convert white space to tabs on output.  Normally col
               converts blank areas to tab sequences.

       -p      Output escape sequences as regular characters.  Without this
               option, col will ignore any unknown escape sequences found in
               its input. Don't use this option unless you know the textual
               position of the escape sequences.

       Col assumes that the ASCII control characters SO (\016) and SI (\017)
       start and end text in an alternate character set.  The character set
       to which each input character belongs is remembered, and on output SI
       and SO characters are generated to ensure that each character is
       printed in the correct set.

       On input, the only control characters accepted are space, backspace,
       tab, return, new-line, SI, SO, VT (\013), and ESC followed by 7, 8,
       or 9.  The VT character is an alternate form of full reverse line
       feed, included for compatibility with some earlier programs of this
       type.  All other non-printing characters are ignored.

SEE ALSO
       ditroff(1), tbl(1), xroff(1) in Xroff.
       groff(1), gtbl(1), gtroff(1) in GNU troff.

NOTES
       The input format accepted by col matches the output produced by nroff
       with the -Tlp option.  The -T37 option is not implemented in the
       DG/UX system.




Licensed material--property of copyright holder(s)                         1

col(1)                           DG/UX 5.4.2                          col(1)


BUGS
       Col cannot back up more than 128 lines.

       It allows at most 800 characters, including backspaces, on a line.

       Local vertical motions that would result in backing up over the first
       line of the document are ignored.  As a result, the first line must
       not have any superscripts.

















































Licensed material--property of copyright holder(s)                         2