ref: e4e0af4d6713161d46cc0a1d580645ca40d6fa81 dir: /data/maps/headers/Route20.asm/
map_header Route20, ROUTE_20, OVERWORLD, WEST | EAST connection west, CinnabarIsland, CINNABAR_ISLAND, 0 connection east, Route19, ROUTE_19, -18 end_map_header