=== owterra.dat ===
The data file <code>owterra.dat</code> contains the "over-world terrains" of the IVAN world map. These are so named, because they become the little pictures that sit over the ground terrain on the world map. They denote the places - cities or dungeons - you can visit when adventuring in the world map, and so they need to be linked up to the dungeon data files.
Here are some pictures showing famous owterrains: