Press Space to see an example. Drag all or just some of the sprites on the left hand side so that they are touching a sprite in the center. then Drag the sprite in the lower right hand corner (with the arrow) so that it's touching any sprite in the center. The computer will spin the sprites around the place where you dropped this sprite. If you hold down the "H" key it will stop at the end of a swirl pattern until you release the "H" key.
