Keybinds
- Accesskey + , - select source language list
- Accesskey + . - select target language list
- Accesskey + h - select left audio
- Accesskey + j - select left textarea
- Accesskey + k - select right textarea
- Accesskey + l - select right audio
- Accesskey + s - swap languages
- Accesskey + t - translate
- Accesskey + c - clear text