Check out Stuart Langridge's work. His variant is called an aqtree. I'm not fond of the tree navigation, so I don't know if that's similar or radically different from what your looking for. His website is kryogenix.org
Whatever you can do or dream you can, begin it.
Boldness has genius, power and magic in it. Begin it now. Chroniclemaster1, Founder of Earth Chronicle A Growing History of our Planet, by our Planet, for our Planet.