The unicorn doodler pen is a fun interactive way to draw lines and structures. Instructions: Up arrow to move up Down arrow to move down Right arrow to move right Left arrow to move left "a" to turn angle by 15 degrees to the right "s" o turn angle by 15 degrees to the left "d" to point mouse in slant position to draw diagonal lines Space to change size of the pen Press "CLEAR" to clean and start over