Run the prog. Press fire button 5 times, until you get to the screen that
says "GREMLINS". You can now move the BoxBoy sprite via the Left Joystick.
The two chars in the upper left are SpriteCollision (left) and
CharacterCollision (right).
  The console operation is an upper-left-to-lower-right diagonal char for
the SpriteCollision (representing no collision) and a ladder-like char for
the CharacterCollision (again representing no collision).
  The SpriteCollision will change to one of three other shapes depending
upon which Sprite you hit. The CharacterCollision will change to a
HorizontalLine when you hit a character.
  Note that you start out with a CharacterCollision because BoxBoy is
standing on the horizontal line.
