===== World Map Modification Chuncks =====

| Offset  | $CEF648 |
| Size  | Variable |
| Entries | 18 |

Pointers at $CEF600.

^  Byte  ^  Description  ^
|  $00  | X position on map |
|  $01  | Y position on map |
|  $02  | Chunk size (11 = 1 tile, 22 = 2x2) |
|  $03+  | Replacement tiles |