| z: | go back to last state saved |
| x: | save the state |
| n: | make a new planet |
| comma: | halfed the number of states calculated each time space bar is pressed |
| period: | double the number of states calculated each time space bar is pressed |
| -: | zoom out |
| +: | zoom in |
| space bar: | calculate a certain number of states |
| left key: | move left |
| right key: | move right |
| up key: | move up |
| down key: | move down |