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```console
$ 03_02_option --help
clap [..]
A simple to use, efficient, and full-featured Command Line Argument Parser
USAGE:
03_02_option[EXE] [OPTIONS]
OPTIONS:
-h, --help Print help information
-n, --name <NAME>
-V, --version Print version information
$ 03_02_option
name: None
$ 03_02_option --name bob
name: Some("bob")
$ 03_02_option --name=bob
name: Some("bob")
$ 03_02_option -n bob
name: Some("bob")
$ 03_02_option -n=bob
name: Some("bob")
$ 03_02_option -nbob
name: Some("bob")
```
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