Calculate and graphically display Julia and Mandelbrot sets
Mandel calculates and displays the Mandelbrot set. This is done by iterating the same map, z -> z^2 + c, but here the initial condition is held fixed at the origin and c is varied over a specified subset of the Complex plane. An excellent on-line introduction to the Mandelbrot set by Robert L. Devaney is available at http://math.bu.edu/DYSYS/FRACGEOM/FRACGEOM.html.
The manual pages can be formatted by typing "nroff -man julia.man > julia.doc" and "nroff -man mandel.man > mandel.doc".