Andrew, this is the definition of the Alligator given by Bill in his book (after the typos are fixed). But, as I say above in the "Alligator Challenge" it will not give you an alligator that looks exactly like the ones in Bill's book or in Investor's Dream. In fact, it's not very close at all.
The formula now in Bill 2.0 is the closest approximation of the book and ID that I know of so far. But, I am not going to be happy until I can get it exact!