“Undo” for iPod’s Solitaire

On the train ride I accidentally discovered an unknown (to me) feature in Klondike on the iPod. Sometimes I’m a little too click-happy and wished I could undo a move. As it turns out, you can: to undo the last move, just click and hold the select button for three seconds. (To keep you from cheating too much, the game only allows one undo.)