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     PSI(1)                                                     PSI(1)

     NAME
          psi - postscript interpreter

     SYNOPSIS
          psi [ option ... ] [ file ]

     DESCRIPTION
          Psi reads postscript input from file or from standard input
          and simulates the resulting pages in an 8½(1) window.  The
          options are

          -pn     Display page n.

          -r      Display the image at full scale, with the bottom
                  left corner positioned at the bottom left corner of
                  the window.  (By default, the image is scaled to fit
                  the window, maintaining the aspect ratio of a
                  printer.)

          -a x y  Display the image at full scale with position x,y of
                  the image placed at the bottom left corner of the
                  window.

          Fonts are implemented with size-24 bitmap fonts.  Available
          fonts are Symbol, Times-Roman, Times-Italic, Times-Bold,
          Helvetica, Helvetica-Oblique, Helvetica-Bold.

          When the `cherries' icon is displayed, use mouse button 3 to
          move forward (more) or quit (done).  Button 2 exits the pro-
          gram completely.

     EXAMPLE
               troff -ms memo | lp -dstdout -H | psi

          Format a memo, convert it to postscript, and display it.

     FILES
          psi.err  error messages

     SEE ALSO
          lp(1), proof(1)

     DIAGNOSTICS
          Error comments are placed on file psi.err.

          Symbols that lack bitmaps are replaced by `?'  and an error
          is reported.

     BUGS
          Unimplemented postscript features are rotated images or

     PSI(1)                                                     PSI(1)

          imagemasks, half tone screens, multiple path clipping, and
          charpath.