This becomes extremely useful. For example, say you have a 2D, top down RPG. You could store the map data in a two-dimensional (2 element) array, like this: DIM MAP[256,256] Then, after loading each tile into the array, you could check to see what type of tile the player is standing on like this: IF MAP[X,Y]==... If the player was standing at, say, 34X,232Y, the the value stored in...