```console $ 03_02_option_derive --help A simple to use, efficient, and full-featured Command Line Argument Parser Usage: 03_02_option_derive[EXE] [OPTIONS] Options: -n, --name -h, --help Print help -V, --version Print version $ 03_02_option_derive name: None $ 03_02_option_derive --name bob name: Some("bob") $ 03_02_option_derive --name=bob name: Some("bob") $ 03_02_option_derive -n bob name: Some("bob") $ 03_02_option_derive -n=bob name: Some("bob") $ 03_02_option_derive -nbob name: Some("bob") ```