I'm not sure if it'll make things clearer for you, but there's some background of fexprs in Kent Pitman's "Special Forms in Lisp" paper here: http://www.nhplac

I'm not sure if it'll make things clearer for you, but there's some background of fexprs in Kent Pitman's "Special Forms in Lisp" paper here: http://www.nhplace.com/kent/Papers/Special-Forms.html http://www.nhplace.com/kent/Papers/Special-Forms.html