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A70A: Unreached: wipe the exit through the first object
Reads as: find the exit through the first object (EXIT_VIA) and, if there is one, set its three bytes to zero -- the way the hidden roads are shut. Nothing calls it.
UNREACHED_WIPE_EXIT A70A DEFB $CD,$25,$9F,$FE,$FF,$C8,$97,$DD
A712 DEFB $36,$00,$00,$DD,$36,$01,$00,$DD
A71A DEFB $36,$02,$00,$C9
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