Glossary Basic objects Variable A symbol to be evaluated Combination A pair to be evaluated. Basically (a . b)? Operator The unevaluated car of a combination. So pretty much the function of an s-expr? Operand tree The unevaluated cdr of a combination Operands The operand tree is usually a list, e.g. (+ 1 2 3 4), in which case any element of that list is an operand Arguments The results of evaluating operands - this is the usual case, where the evaluated values are used, rather than the operan...
