I play pretty fast and I keep running into a problem with butterflies and piggys. I nibble piggys hitting Enter-N since I don't have to pet first and nibble is not the default. A butterfly sometimes gets between me and the piggy and mashing Enter-N means I siNg to the butterfly, costing rather a lot of energy. "Set free" doesn't have a keyboard shortcut now (a good thing) so I was wondering if S, which doesn't do anything on piggies or chickens, could be the Sing shortcut for butterflies.