h2paspp has a small number of options to control its behavior:
     
- 
-dsymbol 
 - Define the symbol symbol before processing is started.
     
 - 
-h 
 - Emit a small helptext.
     
 - 
-I 
 - Include include files instead of dropping the include statement.
     
 - 
-ooutfile 
 - If this option is given, the output will be written to a file named outfile. Note that
     only one output file can be given.