MandelMorph2 draws a Mandelbrot set . The drawing code was originally from FracApp a MacApp program that implemented the Mariani/Silver algorithm. To run, from the World menu choose new morph.../Demo/MandelMorph2. When you create a MandelMorph2, you are given a choice of sizes that keep the real and imaginary scales equal. option-(yellow-)clicking on the picture brings up a menu for: