After selecting the desired number of radial lines, press s to start generating the circle. If you want to change the number of radial lines, press space first to clear all, then select the desired new number of radial lines and press s.
How it works: The generator first finds out the right spacing angle for the radial lines by dividing 360 by the number of radial lines. 360 stands for the circle as a whole. By dividing by the number of radial lines, the spacing will be the result. Then, a clone of the sprite will go ten steps. The next will turn -the result from earlier- degrees. The one after that one -result of earlier times two- the next one times three and so on.