anchor.diff:  (define-argument-selector eighth-arg  8)
   (define-argument-selector ninth-arg   9)
   (define-argument-selector tenth-arg   10)
  -
  +(defun nth-arg (n &rest arguments)
  +  "RETURN: The Nth argument following N."
  +  (nth n arguments))
   
   (defun curry (function &rest left-arguments)
     (lambda (&rest right-arguments)
  
positive.code: ;; (funcall (compose 1+ sin 1-) 0)
  ;; (compose-and-call 1+ sin 1- 0)
  
  
  
  (defmacro define-if-undefined (&rest definitions)
  
negative.code:    ;; 3 - EVALUATION AND COMPILATION
     "WITH-GENSYMS" "WSIOSBP" "PROGN-CONCAT"
     "CURRY" "COMPOSE" "COMPOSE-AND-CALL"
     "/NTH-ARG" "/APPLY"
     "DEFINE-IF-UNDEFINED"  "INCLUDE" "FUNCTIONAL-PIPE"
     "FIRST-ARG" "SECOND-ARG" "THIRD-ARG" "FOURTH-ARG" "FIFTH-ARG"
     "SIXTH-ARG" "SEVENTH-ARG" "EIGHTH-ARG" "NINTH-ARG" "TENTH-ARG"
     "NTH-ARG"
     ;; 4 - TYPES AND CLASSES
     "DEFENUM" "OP-TYPE-OF"
     ;; 5 - DATA AND CONTROL FLOW
  