Anyone know what the waypoint nodes do in the tiles

https://preview.redd.it/kuj6brdaaane1.png?width=1920&format=png&auto=webp&s=2487f85deca84e82fe54f22064a36131dcd90aa8

i was wanting to make some more variation in world gen so i went to look at the other tiles for reference and saw the waypoint nodes and now im not sure if i need them in the tiles i make