code: def start_msstitch(exec_drivers, sysargs):
      
      parser = populate_parser(exec_drivers)
      args = parser.parse_args(sysargs[1:])
      args.func(**vars(args))
docs: Passed all drivers of executable, checks which command is passed to
      the executable and then gets the options for a driver, parses them from
      command line and runs the driver