Right click on the map to add a new waypoint
Left click on a waypoint to edit its properties
Drag a circle to move the waypoint
Click "Save" to download a file with your waypoints in. This file can be reloaded using the "Load" button.
Import existing waypoints using the "Import" button
Note: all changes will be lost if you leave or refresh the page.
When you're finished click the "Save" button and send the resulting file to Alan.