Code draws a fractal fern with dimensions similar to a "Barnsley fern" except without any random functions. It's a fractal, meaning self-similar across scales. The code draws fast enough that we can redraw it rapidly for a growing effect. Draws the entire fern 200 times slowly changing the angle and increasing branch size.
The "Barnsley" fern is a common student exercise in computer programming. This one does not include any random function. Many scratch users have created fern programs. I have looked at many and created one that seems faster than others. The redraw is kind of a gimmick, but works because the code is fast.
