Changes
From Final Fantasy Inside
→Section 2: Regions
That way the engine can play encounter based on place you are, because if you're walking on Balamb beach, then engine should play encounter with beach, not snow plains. That's why if you change the for one map portion you can totally erase encounters in this region, because in example region 4 that may be Centra regions does not contain any BalambPlains, so there is no entry in section1 and therefore the engine finds the region encounters, but doesn't find the encounter entries for BalambPlainsGround in Centra ruins (this is totally an example).
=== Section 2: World map Regions ===
Nothing much to write here.
32x24 world map. Just open it via hexEditor.
It's just bitmap (you can even convert bytes to image and mini worldmap will show)
Every single byte is regionID used for example in section1 for encounters.
=== Section 2-13: UNKNOWN ===