anchor.diff:  
   ;;; 30.4.6 The abstract radio-box and check-box Gadgets
   
  -;; The only real different between a RADIO-BOX and a CHECK-BOX is the
  +;; The only real difference between a RADIO-BOX and a CHECK-BOX is the
   ;; number of allowed selections.
   
   (defclass radio-box (value-gadget oriented-gadget-mixin)
     ()
     (:documentation "The value is a button")
     (:default-initargs
  -    :value nil))
  +   :value nil))
   
   ;; RADIO-BOX-CURRENT-SELECTION is just a synonym for GADGET-VALUE:
   
  
positive.code:                     ((:bottom) (- y2 ds))
                      (otherwise (/ (+ y1 y2 (- as ds)) 2))) ;defensive programming
                    ;; Giving the text-style here shouldn't be neccessary --GB
                    :text-style (pane-text-style pane)
                    :ink ink))))
  
  ;;; 3D-ish Look
  
negative.code: (defmethod draw-label* ((pane labelled-gadget-mixin) x1 y1 x2 y2
                          &key (ink +foreground-ink+))
    (with-slots (align-x align-y label) pane
      (let* ((text-style (pane-text-style pane))
             (as (text-style-ascent text-style pane))
             (ds (text-style-descent text-style pane))
             (w  (text-size pane label :text-style text-style)))
        (draw-text* pane label
                    (case align-x
                      ((:left) x1)
  