(my very first project using pen!) use the arrow keys to move around, and (if you didn't know from the big eraser) use E to erase, press the color buttons to have the color you want, and if you don't like the position you have now, press the green flag to recenter it!
:) v1.0.1 Changelog: removed the direction and position marker things. v1.0.2 Changelog: Made the pen centered on the line v1.1 Changelog: added colors, AND FINNALY ACTUALLY REMOVED THOSE STUPID POSITIOIN MARKERS
