The program? Ok so, there's 3 layers if of paper if you see them. The first one is used to make things appear in the background, like grass, ground,etc. The second one is for stuff like water, trees, rocks,etc. And the last one is for houses, signs, posts, more etc. Now, there's something that looks like a Calendar to the right. That is where you edit everything that you want the game to have. next to that are the files, there, you can import custom tiles and then export them to paint to fix. You simply import them again and boom, done, you got yourself the tiles. Next to that is the scripts area and then music.