For anyone who is interested: following a post on comp.lang.functional asking 
for a 2D maze generator, I wrote a little OCaml program to generate random 2D 
mazes, render them using OpenGL and generate PostScript output. The program 
is available here:

  http://www.ffconsultancy.com/free/maze/

Hopefully this will serve as an intermediate between the ackermann function 
and min-caml for people wanting to learn OCaml. ;-)

-- 
Dr Jon D Harrop, Flying Frog Consultancy Ltd.
Objective CAML for Scientists
http://www.ffconsultancy.com/products/ocaml_for_scientists