This purpose of this code is to facilitate quick prototyping. You are encouraged to read the documentation for more detailed information on how to use the Touch and Gesture Recognition.
"Multitouch Events" section of Apple's Event Handling Guide for iOS: http://developer.apple.com/library/ios/#documentation/EventHandling/Conceptual/EventHandlingiPhoneOS/MultitouchEvents/MultitouchEvents.html
"Gesture Recognizers" section of Apple's Event Handling Guide for iOS: http://developer.apple.com/library/ios/#documentation/EventHandling/Conceptual/EventHandlingiPhoneOS/GestureRecognizers/GestureRecognizers.html