Click and drag to move a point. Press the up arrow key to add a point at the mouse, and press the down arrow key to delete the most recent point. Enjoy! :)
I've had this idea in mind for a while and I'm just now getting to it... If you've ever seen that thing where you draw a bunch of lines over and over to make a curve, this is that but with several pieces stitched together. It's basically drawing a bunch of quadratic Bézier curves. Perhaps in the future I'll modify this so that you can create separate pieces (and spell out your name or something). Eventually, I'll recreate this in JavaScript. That's where the fun begins. ;)