IFS stands for Iterated Function System. Fractals of this type are created by applying one of a number of functions, chosen randomly from the rules set up for the IFS, repeatedly to an intitial point, and graphing each new point. For more information on the functions used, see the page on IFS formulas. With IFS fractals, it can be seen that the starting point does not effect the shape of the fractal too much. This means that a particular fractal can be defined by the rules used to find the next point, and the probabilities that an individual function will be chosen. This is the model used by my IFS fractal generator.