Online Help:

Usage: /vol/vssp/local/trees/amma-4/linux/bin/polchop [options] 
   -optload () [] Load options from a file.  
   -optsave () [] Save options to a file.  
   -i () [] input  filename .dxf/.obj/.tpoly/.gf/.tri
   -o () [] output filename .obj/.tpoly/.gf/.tri
   -x0 (-1e+100) [-1e+100] xmin 
   -x1 (1e+100) [1e+100] xmax 
   -y0 (-1e+100) [-1e+100] ymin 
   -y1 (1e+100) [1e+100] ymax 
   -z0 (-1e+100) [-1e+100] zmin 
   -z1 (1e+100) [1e+100] zmax 
   -help (TRUE) [FALSE] Print usage information. 

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