Technical Issues of Separation in Function Cells and Value Cells This paper appears in Lisp and Symbolic Computation, Volume 1, No. 1, June 1988, pp81-101. The substance of the original text appears in normal fonting, though a small number of out-and-out typos were corrected. Oddities of spelling that were the custom of the time (either generally, or just for me) were left alone. Some formatting