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```console
$ 03_05_default_values_derive --help
clap [..]
A simple to use, efficient, and full-featured Command Line Argument Parser
USAGE:
03_05_default_values_derive[EXE] [NAME]
ARGS:
<NAME> [default: alice]
OPTIONS:
-h, --help Print help information
-V, --version Print version information
$ 03_05_default_values_derive
name: "alice"
$ 03_05_default_values_derive bob
name: "bob"
```
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