```console $ 04_02_parse --help A simple to use, efficient, and full-featured Command Line Argument Parser Usage: 04_02_parse[EXE] Arguments: Network port to use Options: -h, --help Print help information -V, --version Print version information $ 04_02_parse 22 PORT = 22 $ 04_02_parse foobar ? failed error: Invalid value "foobar" for '': invalid digit found in string For more information try '--help' $ 04_02_parse_derive 0 ? failed error: Invalid value "0" for '': 0 is not in 1..=65535 For more information try '--help' ```