ref: b3364f9f8819a87f562ca612199aaa0d4da7fcee dir: /data/maps/headers/Route9.asm/
map_header Route9, ROUTE_9, OVERWORLD, WEST | EAST connection west, CeruleanCity, CERULEAN_CITY, -4 connection east, Route10, ROUTE_10, 0 end_map_header