Online Help:

Usage: /vol/vssp/local/trees/amma-4/linux/bin/file2PS [options] 
   -optload () [] Load options from a file.  
   -optsave () [] Save options to a file.  
   
This program generates a Postscript file from any combination of one or
more files containing either an image, an array of 2D vectors or an array
of 2x2 symmetric matrices.

Array file format (in ASCII):
  4 integers defining top left and bottom right pixel positions
  For each row: for each col:
    2 real nos. (for vectors) or 4 real nos. (for matrices)

   -i () [] image file name 
   -v () [] vectors file name 
   -c () [] covariances file name 
   -o (-) [-] Postscript o/p file name 
   -n (FALSE) [FALSE] Normalise vectors if true
   -s (1) [1] subsample factor 
   -w (100) [100] Postscript image width (mm) 
   -help (TRUE) [FALSE] Print usage information.