Online Help:

Usage: /vol/vssp/local/trees/amma-4/linux/bin/range2tri [options] 
   -optload () [] Load options from a file.  
   -optsave () [] Save options to a file.  
   -i () [] input  filename .pgm/.dep/.nrcc/.txt/.ris
   -o () [] output  filename .tri
   -s (100) [100] steepest acceptable slope of a triangle 
   -help (TRUE) [FALSE] Print usage information. 

Dependancies:
   -i is compulsory.