Here's my entry for the UseComp.
It requires the Alan 2.7 interpreter.

It's been finished off in rather a rush, so I
hope you'll excuse any bugs.

Comments welcome,

Greg Ewing, Computer Science Dept, +--------------------------------------+
University of Canterbury,	   | A citizen of NewZealandCorp, a	  |
Christchurch, New Zealand	   | wholly-owned subsidiary of USA Inc.  |
greg@cosc.canterbury.ac.nz	   +--------------------------------------+