cquilts.icn: Program to create "chaotic square quilts"

This program creates square quilting patterns as described in
"Symmetry in Chaos", Michael Field and Martin Golubitsky, Oxford
University Press, 1992.

Instead of plotting an image, the values are computed and saved
in "numerical carpets" for off-line plotting.

The following options are supported:

     -i i    Save carpet files every i iterations; default 100000

     -p s    Prefix for carpet file names, default q_

     -t i    Terminate execution after i iterations; default no limit

Warning:  This program takes a long time to go through enough iterations
to produce nice results.

Note:  This is an unfinished work, supplied for interest only.

There are several sections of parameter values below.  All but one
is commented out.  Change this to get other patterns.