Help file for !Martin v1.0

!Martin uses the algorithm discovered by the man of the same name - Dr Barry
Martin, and was originally published in the Scientific American. I gather it
works due to rounding errors caused by the use of floating point numbers.
These numbers are only stored approximately by the programming language /
computer, and thus errors gradually creep in by the repeated calculation.

Performing the same calculation using a different floating point mechanism
will produce different results.

The key to the routine is the SGN term - without it nothing spectacular
happens. You can try different calculations to produce a similar effect.

The amazing thing about the routine is its simplicity and speed. In fact you
can reduce this program to just 1 line of BASIC code!

Mike Curnow,
Archimedes Fractal Group,
April 1991