anchor.diff:                  (5 :five)
                   ;; t specifies default behavior
                   (t :unknown)))
  -  (assert-equal ____ b)
  +  (assert-equal :four b)
     "case can also check if a list of values contains
      the input"
     (setf c
  
positive.code:          (lastname (case name ("John" "Doe")
                                ("Max" "Mustermann")
                                (t "Anonymous"))))
    (assert-equal ____ lastname)))
  
  (define-test test-cond
      "cond is the general purpose form for checking multiple
  
negative.code:         (cond ((> a 0) :positive)
                ((< a 0) :negative)
                (t :zero)))
    (assert-equal :positive c))
  