The "least common denominator" approach should have, as one option,
"UNDEFINED". This is similar to the approach we are taking for put/get.
-------------------
Marc Snir
IBM T.J. Watson Research Center
P.O. Box 218, Yorktown Heights, NY 10598
email: snir@watson.ibm.com
phone: 914-945-3204
fax: 914-945-4425