then print_variable DETECTOR INPUT_FILE INTERMEDIATE_FILE check_input_file $DETECTOR $INPUT_FILE check_output_file $INTERMEDIATE_FILE $OUTPUT_FILE JMCEvt f $INPUT_FILE o $INTERMEDIATE_FILE d
then usage $script[detector file[input file[output file[CDF file descriptor]]]] nNote that if more than one input file is all other arguments must be provided fi case set_variable CDF