This is really cool. One suggestion -- expand the function names! It took me a little bit to figure out that "fd" was "forward" and "rt" was "right." It doesn

This is really cool. One suggestion -- expand the function names! It took me a little bit to figure out that "fd" was "forward" and "rt" was "right." It doesn't seem like that much more time to type out "forward" than "fd" -- especially if you're just clicking on function names -- and it'd go a long way in making the code more approachable and readable.