The tile cutter lets you grab tiles from other tilesets or from backdrops. Press < and > to choose the tileset or backdrop that you want to cut from. You can also type in an ID number. Use the arrow keys or the mouse to move the cut box. If Shift is pressed or grid-snap is on, arrows move in 20x20 steps. Press G to toggle grid-snap, aligning the cut box to a 20x20 grid. Press SPACE or left-click to cut a tile and return to the tile selection screen. Press ENTER or right-click to cut a tile and advance automatically to the next tile to the right. This allows you to quickly copy multiple tiles.