Thank you for pointing out my misinterpretation of Common Lisp. A careful rereading of CLTL and your comments have convinced me that KCL is correct. USPS: Mac Michaels, 3500 W.Balcones Center Dr., Austin,TX 78759 ARPA: mac@mcc.com UUCP: {uunet,harvard,gatech,pyramid}!cs.utexas.edu!milano!cadillac!mac