# Feature Flags

S.T.A.R.K uses environment variables to enable or disable experimental and optional features.

## Available Flags

| Flag                            | Default | Complexity overhead                                | Description                                                                                                                                                                          |
| ------------------------------- | ------- | -------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `STARK_ENABLE_VOICE_CLI`        | `0`     | None                                               | Print voice input/output in terminal. See [Voice Assistant](https://stark.markparker.me/voice-assistant/index.md).                                                                   |
| `STARK_ENABLE_MULTILANG_MATRIX` | `1`     | O(T × C × P), multiplies matching cost by T tracks | Match input against all alternative language tracks concurrently. See [Multilanguage Input](https://stark.markparker.me/localization-and-multilingual/multilanguage-input/index.md). |

## Setting Flags

Set via environment variables before running your app:

```bash
STARK_ENABLE_VOICE_CLI=1 python -m your_app
```