Online Help:

Usage: /vol/vssp/local/trees/amma-4/linux/bin/WorldDataSet [options] 
   -optload () [] Load options from a file.  
   -optsave () [] Save options to a file.  
   -i () [] image list file
   -f () [] feature list file
   -out () [] output dataset to here
   -sc (1) [1] scale of feature images 
   -n (1000) [1000] Extract this many points to sample the whole database 
   -seed (1234) [1234] random seed 
   -help (TRUE) [FALSE] Print usage information. 

Dependancies:
   -i is compulsory.
   -f is compulsory.
   -out is compulsory.