miu.icn: Program to generate strings from MIU system

   This program generates strings from the MIU string system.

   The number of generations is determined by the command-line argument.
The default is 7.

Reference:

   Godel, Escher, and Bach: an Eternal Golden Braid, Douglas R.
Hofstadter, Basic Books, 1979. pp. 33-36.