1 - Click in the map to add a waypoint.
2 - Click and drag w/p to change poition.
3 - Double click on w/p to delete it.
4 - Click on a line to add an intermediate w/p.
5 - .gpx button (top-left) will download the file.
6 - WP button will toggle / hide waypoints.
7 - Refresh. - Start again.
8 - Definitive Maps.
9 - World / UK Maps.