Provided by: pclcomp_0.99.1-1_i386 bug


       pclcomp - Compress PCL graphics files.


       pclcomp [ -0123drsvxz ] [ -n num ] [ infile [ outfile ]]


       Pclcomp  compresses (or decompresses) HP-PCL (Printer Control Language)
       graphics data.  The supported compression modes are  0  (uncompressed),
       1,  2  and 3.  Pclcomp will read files using any of the modes 0 through
       3,  and  will  output  using  the  modes  which  will  give  the   best
       compression.   This compressed version of the file may be sent directly
       to a PCL compatible printer, thus reducing I/O bandwidth.  Pictures may
       also  be  saved  in compressed form, reducing disk usage.  In addition,
       PCL "imaging" files for the PaintJet XL are also supported.

       The options to pclcomp control  the  compression  modes.   By  default,
       pclcomp  will  use  modes  0,  2 and 3, but the user may restrict which
       output modes it uses by specifying them on the command  line  with  the
       -0,  -1, -2 and -3 options.  To decompress a file, simply specify -0 as
       the only mode to use for output.  Mode  0  (  -0  )  should  always  be
       allowed  since  modes 1, 2 and 3 cannot be guaranteed to be better than
       mode 0 for all types of pictures.

       The -z option disables the zero "strip" feature.  Since  most  printers
       do  zero "filling", pclcomp, by default, "strips" the trailing zeros of
       each row (or plane) of data.  Some printers  or  programs  may  require
       that zero "stripping" be disabled.

       By  default,  pclcomp  expects the input raster width to be 2400 pixels
       (8" at 300 dpi), and if it  is  different  (e.g.  PaintJet),  then  the
       raster  width  should  be  specified  by the Source Raster Width escape
       sequence (<esc>*r#S).  However, many applications do not set the  width
       and  assume  a  default,  therefore,  the user may use the -n option to
       pclcomp to specify a new default raster width.  For PaintJet (8" at 180
       dpi),  the  number should be 1440.  If the PCL file contains the Source
       Raster Width escape  sequence,  it  will  override  this  default.   If
       pclcomp thinks that more data is coming in than the specified width, it
       will  generate  a  warning,  and  continue  processing   (and   perhaps
       truncating) data.

       The  -x  option  will  cause  pclcomp  to  remove any horizontal offset
       sequences from the data.  Only use this option if white is  defined  to
       be zero (as with LaserJets).  This will shrink the data more if modes 2
       or 3 are used.

       The -r option causes pclcomp to append a reset sequence (<esc>E) to the
       end of the job.

       Use  the  -d option to pclcomp if the output is to be sent to a DeskJet

       Some applications erroneously  send  <esc>*rB  and  <esc>*rA  sequences
       between  every  row  of  graphics  data.  The -s option to pclcomp will
       "strip" all <esc>*rB sequences, and all <esc>*rA  sequences  after  the
       first  occurrence  of  this  sequence.   In  addition, text and control
       characters residing between <esc>*rA and  <esc>*rB  sequences  will  be
       discarded.   While  this  will  work  well  for  many jobs, it may have
       problems on multi-page or complex jobs.

       The -v option simply gives statistics to stderr about which compression
       modes were used.


       To compress a PCL file for LaserJet III, use:
            pclcomp infile outfile

       To compress a PCL file for the PaintJet (A size page at 180 dpi), use:
            pclcomp -01 -n 1440 infile outfile

       To compress a PCL file for DeskJet, use:
            pclcomp -d012 infile outfile

       To fully decompress a PCL file, use:
            pclcomp -0z < infile > outfile


       The -z option can cause the output to be larger than the input.

       The -s option is useful, but it can cause erroneous output.

       The  -x option can cause black areas on the left side of the picture on
       color printers.


       Tony Parkhurst, Hewlett-Packard, San Diego Division  (