;; and in fact all we've done is copied the definition. Note again
;; how we check to avoid clobbering an existing definition. (It's good
;; style to do this, in case some improvement was made to the
;; and in fact all we've done is copied the definition. Note again
;; how we check to avoid clobbering an existing definition. (It's good
;; style to do this, in case some improvement was made to the