This version of the applet is very unique, because I use a new letter class that allows interaction between letters. This takes a little more effort, since every combination of two letters must check for interactions, but it's really fun to play with. I also added a release method (called on the letter that was dragged by the mouseReleased method of the applet) that allows you to 'throw' them by dragging and releasing them. Of course, this causes a large amount of chaos, since that letter might hit other letters, and it's hard to throw it straight down.