Thanks to @gtoal for help with the edge bouncing. Fun to play around with! Hold down the mouse on the screen to create dots & watch them bounce around. Press the spacebar to adjust settings. Press 'c' to clear. Green flag to reset settings. If you change the margins, you need to clear the screen to see the effects. Go here for no lag: https://phosphorus.github.io/app.html?id=147229168&turbo=false&full-screen=true
