Press Shift and Click the Green Flag for Turbo Mode to make everything happen quicker. Then place the mouse cursor anywhere on the screen and click to place the first (tiny) dot and start the program. The program will then randomly pick one of the vertices and place a new (tiny) dot halfway between the original dot and vertex. The program will now randomly pick one of the vertices again and place a new (tiny) dot halfway between the previous dot and this vertex. This process will continue. It might take a little while for the pattern to show. (Turbo will speed things up.)