Does anyone know what that icon does in the main screen when you have the camera on? Too lazy to upload a picture, but it kind of looks like the image of an eraser in a computers Paint application. I click it and it does nothing. It's in the map.

Does anyone know what that icon does in the main screen when you have the camera on? Too lazy to upload a picture, but it kind of looks like the image of an eraser in a computers Paint application. I click it and it does nothing. It's in the map.