I suggest putting it in turbo mode (else it is kinda slow). Press S before you start for the first time and whenever you want to start a new fractal. Press the space key to draw the next iteration of the fractal, H to hide/show the variables, E to erase the fractal. If the fractal hits the edges, it glitches out, so don't make it too big. Press 6 7 then answer 67 for a surprise.
The scale factor is actually 1 divided by the scale factor (which I'm only mentioning because this is partly for Geometry class). Also, if you set the scale factor to 1, it will just draw triangles over itself. So don't do it.