ref: 6fa8a553cbb53a9abe59bee8d0cc176d19cde47f
dir: /data/maps/headers/Route12.asm/
map_header Route12, ROUTE_12, OVERWORLD, NORTH | SOUTH | WEST connection north, LavenderTown, LAVENDER_TOWN, 0 connection south, Route13, ROUTE_13, -20 connection west, Route11, ROUTE_11, 27 end_map_header