Adjust the variables on screen and see what the arrows trace out. When changing the arrow speeds, press the green flag to fix the arrow`s position.
I may add another arrow and/or extra stuff soon. what you can do with more than 3 arrows: https://www.youtube.com/watch?v=-qgreAUpPwM the math behind it: https://www.youtube.com/watch?v=r6sGWTCMz2k
