Shift-click the green flag to activate Turbo Mode. Press play. Click 1 is standard Click 2 is with lines and no erasing The slider also rotates the figure This project is not recommended for people extremely sensitive to flashing lights. See inside to edit some of that stuff. Click flag if something doesn't work.
It was an accident... I was making fractal stuff and instead of turning everything by adding an extra degree of rotation (the variable turn), I multiplied by it instead.