1. This is the stack to draw cards. Tap on it to get one. 2. This is the discard pile. Here you can place a card to end your turn. The second pile is for drawing cards. 3. On this free slot you can place melds. As soon as a slot is occupied, a new one opens up afterwards. 4. The two bars indicate the points already scored. In online mode, a third bar shows how much time you have left for your turn. 5. The menu takes you back to the main screen, for example. It can be opened and closed by tapping on it.