
COL(1)			UNIX Reference Manual			COL(1)

NNAAMMEE
     ccooll - filter reverse line feeds from input

SSYYNNOOPPSSIISS
     ccooll [--bbffxx] [--ll _n_u_m]

DDEESSCCRRIIPPTTIIOONN
     CCooll filters out reverse (and half reverse) line feeds so the output is in
     the correct order with only forward and half forward line feeds, and re-
     places white-space characters with tabs where possible.  This can be use-
     ful in processing the output of nroff(1) and tbl(1).

     CCooll reads from standard input and writes to standard output.

     The options are as follows:

     --bb	Do not output any backspaces, printing only the last character
	    written to each column position.

     --ff	Forward half line feeds are permitted (``fine'' mode).  Normally
	    characters printed on a half line boundary are printed on the fol-
	    lowing line.

     --xx	Output multiple spaces instead of tabs.

     --ll_n_u_m  Buffer at least _n_u_m lines in memory.  By default, 128 lines are
	    buffered.

     The control sequences for carriage motion that ccooll understands and their
     decimal values are listed in the following table:

     ESC-7	    reverse line feed (escape then 7)
     ESC-8	    half reverse line feed (escape then 8)
     ESC-9	    half forward line feed (escape then 9)
     backspace	moves back one column (8); ignored in the first column
     carriage return  (13)
     newline	  forward line feed (10); also does carriage return
     shift in	 shift to normal character set (15)
     shift out	shift to alternate character set (14)
     space	    moves forward one column (32)
     tab	      moves forward to next tab stop (9)
     vertical tab     reverse line feed (11)

     All unrecognized control characters and escape sequences are discarded.

     CCooll keeps track of the character set as characters are read and makes
     sure the character set is correct when they are output.

     If the input attempts to back up to the last flushed line, ccooll will dis-
     play a warning message.

SSEEEE AALLSSOO
     expand(1),	nroff(1),  tbl(1)

HHIISSTTOORRYY
     A ccooll command appeared in Version 6 AT&T UNIX.

BSD Experimental		 June 17, 1991				1
