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       ps2fax - image POSTSCRIPT(R) for facsimile transmission by HylaFAX


       /var/spool/hylafax/bin/ps2fax [ options ] [ files...  ]


       ps2fax  takes  POSTSCRIPT input and generates a TIFF Class F image file
       suitable for facsimile transmission.  It  is  usually  invoked  by  the
       HylaFAX scheduler process, faxq(8).  On Silicon Graphics' IRIX systems,
       this application is based on Adobe's Display POSTSCRIPT  software.   On
       other  machines  POSTSCRIPT  imaging is typically done using the freely
       available Ghostscript software.

       ps2fax is actually  a  link  (symbolic  or  otherwise)  to  the  script
       appropriate  for  the  POSTSCRIPT imaging tool.  The link is setup when
       the faxsetup(8) script is run to configure a HylaFAX server machine for

       Input files containing POSTSCRIPT may be specified on the command line.
       If none are given, then ps2fax will read from standard input.

       By default, ps2fax will generate a 98 line/inch output  document  whose
       page width is 1728 pixels and page length is 297 mm (a standard A4 page
       at low resolution).  Horizontal resolution is always 204 dpi.   Command
       line  options  may  be used to select alternate vertical resolution and
       page dimensions.

       If no filename is given, ps2fax writes  its  output  to  a  file  named
       ps.fax; the -o option can be used to specify an alternate filename.

       By default, output is compressed using the standard Group 3 1D-encoding
       scheme, with EOL codes padded to byte boundaries.  If the -2 option  is
       specified,  output  is  encoded  with  the optional Group 3 2D-encoding
       scheme (EOL codes are still padded to byte boundaries).

       This script can modify outgoing facsimile, such as watermarking, To  do
       this  create  a  shell  script  etc/FaxModify in the spooling area that
       alters the document.

       Note that bin/ps2fax is usually just a link  to  a  shell  script  that
       invokes the appropriate POSTSCRIPT RIP to do the work.


       The following operations are recognized:

       -1        Write Group 3 1D-encoded data to the output file.

       -2        Write Group 3 2D-encoded data to the output file.

       -3        Write Group 4 MMR-encoded data to the output file.

       -m pages  Set  the  maximum  number  of pages that are permitted in the
                 output file.  If more pages are present in the input document
                 then abort processing.

       -o file   Write  output  to  the  specified file instead of the default
                 ps.fax filename.

       -w width  Set the output page width, in pixels.  By default, pages  are
                 1728 pixels wide.

       -l length Set the output page length in millimeters.  By default, pages
                 are 297 millimeters long.

       -r vres   Set the vertical resolution, in lines/inch, at which to image
                 the POSTSCRIPT.


       Before   user-supplied   POSTSCRIPT   is   passed   to  the  POSTSCRIPT
       interpreter,  a  limited  number  of  operators  are  defined.    These
       operators  are  operators  commonly  found in a LaserWriter printer and
       (sometimes) generated by Macintosh-based applications.

       The default Display  POSTSCRIPT-based  execution  environment  includes
       support for the following fonts:
       AvantGarde-Book           Helvetica-Bold                  Palatino-BoldItalic
       AvantGarde-BookOblique    Helvetica-BoldOblique           Palatino-Italic
       AvantGarde-Demi           Helvetica-Narrow                Palatino-Roman
       AvantGarde-DemiOblique    Helvetica-Narrow-Bold           StoneSerif
       Bookman-Demi              Helvetica-Narrow-BoldOblique    Symbol
       Bookman-DemiItalic        Helvetica-Narrow-Oblique        Tekton
       Bookman-Light             Helvetica-Oblique               Times-Bold
       Bookman-LightItalic       Lithos-Bold                     Times-BoldItalic
       Courier                   NewCenturySchlbk-Bold           Times-Italic
       Courier-Bold              NewCenturySchlbk-BoldItalic     Times-Roman
       Courier-BoldOblique       NewCenturySchlbk-Italic         ZapfChancery-MediumItalic
       Courier-Oblique           NewCenturySchlbk-Roman          ZapfDingbats
       Helvetica                 Palatino-Bold
       Note  that this is the same set of fonts supported by the DPS extension
       to the X server.

       The default Ghostscript-based environment is  more  uncertain;  consult
       the  Ghostscript  documentation  for  information  on  what  fonts  are


       /var/spool/hylafax/etc/    POSTSCRIPT code read at startup for DPS
       /usr/lib/DPS/default.dps_vm             startup VM file for DPS
       /usr/lib/DPS/outline                    Type 1 fonts for DPS
       /usr/lib/DPS/prebuilt                   prebuilt versions of fonts for DPS


       Output from the Display POSTSCRIPT version of this command  is  encoded
       according to the Display POSTSCRIPT binary encoding protocol.

       No  prebuilt  bitmap  fonts  are  currently available for the DPS-based
       imager; this would greatly improve legibility at  low  resolutions,  as
       the rendering of outline fonts at 98 lpi is particularly poor.

       Both  DPS-  and Ghostscript-based versions of this program fail to exit
       with non-zero status when an invalid POSTSCRIPT document is  processed;
       this  makes  it  problematic for the HylaFAX queue manager to determine
       when a problem arises when preparing a job for transmission.


       sendfax(1), faxq(8), hylafax-server(5)

                                August 26, 1996