ref: 8ce20e5c31ed2255e708e6a38c7b75d3d8bee48c 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