# Variables

## API Variables

The behavior of the API can be modified by adding an environment variable file at `/opt/wrolpi/.env`

### Downloads

Download behavior can be modified by using these variables:

| Name                            | Type  | Default Value |
|---------------------------------|-------|---------------|
| `SIMULTANEOUS_DOWNLOAD_DOMAINS` | `Int` | 4             |

### Raspberry Pi

Raspberry Pi behavior can be modified by using these variables:

| Name                    | Type     | Default Value |
|-------------------------|----------|---------------|
| `DEFAULT_CPU_FREQUENCY` | `String` | 'ondemand'    |