Shows terrain boxes. Has an incomplete thing I was trying, the list of special terrain IDs are at the top, but that table wasn't used. Has something else I hacked together to show special IDs I'm looking for instead, rather critical in attacking the Sky World boss where I wasn't supposed to.
Colored boxes are used to point out bits of terrain I'm not sure about. Otherwise, the white boxes are close to accurate of what I think they are. Busies up the emulator a bit.