ref: 7e92d5ba8c7d7c255a49bce76239ec12d6398cef dir: /data/maps/headers/Route3.asm/
map_header Route3, ROUTE_3, OVERWORLD, NORTH | WEST connection north, Route4, ROUTE_4, 25 connection west, PewterCity, PEWTER_CITY, -4 end_map_header