How do I add/hide the additional layer to the map

The app allows you to display up to an additional overlay on top of the background map.

1. Open the app’s main menu.
2. Select "Map selection".
3. Click on "Additional layer".
4. Set the desired transparency for the additional layer. The further the slider is to the right, the more transparent the layer will be.
5. Select the desired additional layer, or select "No additional layer" if you want to hide it completely.