Online Help:

Usage: /vol/vssp/local/trees/amma-4/linux/bin/rangeconv [options] 
   -optload () [] Load options from a file.  
   -optsave () [] Save options to a file.  
   -i () [] input  filename .pgm/.dep/.nrcc/.txt/.ris
   -o () [] output filename .pgm/.dep/.ris
   -f (1) [1] image scaling factor 
   -dx (0) [0] x direction offset in scaling 
   -dy (0) [0] y direction offset in scaling 
   -help (TRUE) [FALSE] Print usage information. 

Dependancies:
   -i is compulsory.
   -o is compulsory.