Massachusetts Institute of Technology A. I. Laboratory Artificial Intelligence Memo No. 239 February 29, 1972 contents index M. Beeler [beeler@bbn.com] R. W. Gosper [rwg@newton.macsyma.com] R. Schroeppel [rcs@cs.arizona.edu] [Retyped and formatted in 'html' ('Web browser format) by Henry Baker, April, 1995. The goal of this 'html' document is to make HAKMEM available to the widest possible audienc