anchor.diff:      ;; the previous)
       ;;
       ;; e.g. "uml:Property", "uml:Comment", "uml:Operation", "uml:Constraint", "uml:Package"
  -    :initag :type
  +    :initarg :type
       :type string ;; ?? FIXME: namespace qualified strings ??
       )
      ;; ...
  
positive.code: ;;; * Post Hoc
  
  
  (defclass element ()
    ((owned-comments
      :source-element-p t
  
negative.code:   (:namespace
     ("uml" "http://www.omg.org/spec/UML/20110701" ))
    (:uml-name "UML::Classifier")
    (:is-abstract . t))
  