If you press " space " = erase all If you press " 1 " = Change Color If you press " 2" = Change Color In A Opposite Way If you press " 3 " = set pen size 0.1 If you press " 4 " = set pen size 1 If you press " 5 " = settings for the ray If you press " 6 " = Stop all ( so you can see the finishing circle you created )
Just practice remix if you want