1```console 2$ 03_04_subcommands_derive help 3A simple to use, efficient, and full-featured Command Line Argument Parser 4 5Usage: 03_04_subcommands_derive[EXE] <COMMAND> 6 7Commands: 8 add Adds files to myapp 9 help Print this message or the help of the given subcommand(s) 10 11Options: 12 -h, --help Print help 13 -V, --version Print version 14 15$ 03_04_subcommands_derive help add 16Adds files to myapp 17 18Usage: 03_04_subcommands_derive[EXE] add [NAME] 19 20Arguments: 21 [NAME] 22 23Options: 24 -h, --help Print help 25 -V, --version Print version 26 27$ 03_04_subcommands_derive add bob 28'myapp add' was used, name is: Some("bob") 29 30``` 31 32Because we used `command: Commands` instead of `command: Option<Commands>`: 33```console 34$ 03_04_subcommands_derive 35? failed 36A simple to use, efficient, and full-featured Command Line Argument Parser 37 38Usage: 03_04_subcommands_derive[EXE] <COMMAND> 39 40Commands: 41 add Adds files to myapp 42 help Print this message or the help of the given subcommand(s) 43 44Options: 45 -h, --help Print help 46 -V, --version Print version 47 48``` 49 50Because we added `#[command(propagate_version = true)]`: 51```console 52$ 03_04_subcommands_derive --version 53clap [..] 54 55$ 03_04_subcommands_derive add --version 56clap-add [..] 57 58``` 59