http://blogs.msdn.com/avip/archive/2008/07/19/drawing-fractal-trees-part-2.aspxL-Systems We've established that drawing the tree will use the concept of self-similarity. To put this in action, we're going to use what's called an L-System . Here's a crash-course... Firstly, we establish that we have a "pen" that at anyen-USCommunityServer 2.1 SP1 (Build: 61025.2)