Press flag for basic set FPS (Frames per second/frame rate/how fast it animates), press slow for a 1 second frame rate which is incredibly slow, press clean of a proper animating frame rate, press fast for a speedy FPS that goes pretty quick, click bear to make him growl, then just watch, look inside the code, every single line of code has a comment explaining it to make it make sense.
If you use this code to learn or animate you must credit me for helping, this is original and mine do not steal.