According to the developer:
"Pixel Magic 1.0a is a stand-alone version of my Photoshop filter
"Expression" (that is photoshop is no longer required!). Think of it
as an exploratory graphics program for the mathematically literate. It
creates images by computing the results of mathematical expressions
which you supply. It can be used to create some extremely interesting
and beautiful special effects such as Fractal Zooms, animated clouds
and many others. I use it mostly to create animated textures for 3D
modeling but it has a number of other uses.
This type of software is perhaps too artistic for mathematicians, and
too mathematical for artists. If this description intrigues you, then
check it out!"
The file pixmagic.10.a.hqx includes the Pixel Magic application,
documentation and a fractal zooming application called MZoom.
I have also uploaded the aforementioned Expression filters for
Photoshop (68K and PPC versions) for those who just want to use it
inside Photoshop.