I saw some talk on this subject and thought this might help .
bye

 I suggest that you check out 
Hellerstein's Generalized Search Tree (GIST) at 
http://gist.CS.Berkeley.EDU:8000/gist/




Sun, 11 Oct 1998 14:00:59 -0400 (EDT)
Wayne <wayne@ns.pivot.net>
GIST