Command attributes
==================

The `Energy.Attribute.Command` namespace provides attributes for command-line option parsing.

OptionAttribute
---------------

**Energy.Attribute.Command.OptionAttribute** marks a field or property as a command-line option.

```csharp
public class Options
{
    [Energy.Attribute.Command.Option("input", Short = "i", Long = "input")]
    public string Input;

    [Energy.Attribute.Command.Option("output", Short = "o", Long = "output")]
    public string Output;

    [Energy.Attribute.Command.Option("verbose", Short = "v")]
    public bool Verbose;
}
```

Properties
----------

| Property | Description |
|----------|-------------|
| `Name` | Primary option name. |
| `Short` | Short option name. |
| `Long` | Long option name. |
| `Alternatives` | Additional aliases. |

ArgumentAttribute
-----------------

**Energy.Attribute.Command.ArgumentAttribute** marks a positional argument.

WelcomeAttribute
----------------

**Energy.Attribute.Command.WelcomeAttribute** provides welcome text for command-line applications.

See also
--------

- `core-configuration` for attribute-driven configuration.
- `core-shell` for option styles.
- `base-command` for fluent argument parsing.