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Annotation of coherent/a/usr/man/COHERENT/col, revision 1.1

1.1     ! root        1: 
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        !             3: col                          Command                          col
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        !             8: Remove reverse and half-line motions
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        !            10: ccooll [ -bbddffxx ][ -pp_n ]
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        !            12: The command col reads the  standard input and writes to the stan-
        !            13: dard output.   It removes reverse and  half-line motions from the
        !            14: output of  nroff for  the benefit  of output devices  that cannot
        !            15: perform them.   It maintains an  image of the page  in memory and
        !            16: performs these  motions virtually  so they  do not appear  on the
        !            17: output.
        !            18: 
        !            19: col understands  four escape sequences: <esc>  7 for reverse line
        !            20: feed, <esc> 8  for half reverse line feed, <esc>  9 for half for-
        !            21: ward line feed, and <esc> B  for a forward line feed.  It removes
        !            22: <esc> (ASCII 033) from the input  stream if it is followed by any
        !            23: other character.
        !            24: 
        !            25: Eight control  characters besides  <esc> are interpreted  by col.
        !            26: Newline,  return, space,  backspace,  and tab  carry their  usual
        !            27: meaning.  VT  (013) is  an alternate  form of reverse  line feed.
        !            28: The characters SO (017) and SI  (016) signal the start and end of
        !            29: text in an  alternate character set.  col remembers the character
        !            30: set for each character and uses  SO and SI to distinguish them on
        !            31: the output.   col removes all  other control characters  from the
        !            32: input stream.
        !            33: 
        !            34: ccooll recognizes the following options:
        !            35: 
        !            36: -bb  The  output device cannot backspace.  Only the  last of a set
        !            37:     of characters destined for a given position will appear.
        !            38: 
        !            39: -dd  Double-space the output.   This doubles the length of a docu-
        !            40:     ment but preserves  relative vertical spacing.  The -f option
        !            41:     has precedence.
        !            42: 
        !            43: -ff  The output  device can perform half-forward line feeds.  Full
        !            44:     lines  appear single  spaced  with half  lines between  them.
        !            45:     This is  the only situation in which  half forward line feeds
        !            46:     appear in the output of col -- reverse line motions never ap-
        !            47:     pear.
        !            48: 
        !            49: -xx  Suppress  the default  conversion of  white space to  tabs on
        !            50:     output.
        !            51: 
        !            52: -pp _n
        !            53:     Set the  internal page buffer size to  n full lines (default,
        !            54:     128).
        !            55: 
        !            56: If neither -f nor -d is chosen, col moves non-empty half lines to
        !            57: the  next lower  full line  and pushes all  later lines  down one
        !            58: line.  This can distort the appearance of the document.
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        !            64: COHERENT Lexicon                                           Page 1
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        !            68: 
        !            69: col                          Command                          col
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        !            72: 
        !            73: ***** See Also *****
        !            74: 
        !            75: ASCII, commands, nroff
        !            76: 
        !            77: ***** Notes *****
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        !            79: Backing up  past the start  of a document  or of the  page buffer
        !            80: loses characters.
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        !           130: COHERENT Lexicon                                           Page 2
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