Click the green flag to draw the tree. Can you tweak the code to draw more leaves? What happens if you do that?
Inspired by the picture in this post: https://bsky.app/profile/advanced-ict.info/post/3mn3jx4qaak22 The code is a bit convoluted because blocks don't have local variables - hence the need to reset size, position, etc., after each call to square.
