anchor.diff:    (warn 'deprecated-feature :feature #'remove-property :version "3.0.2")
     (property-makunbound object property-name))
   
  +(defun remove-all-direct-properties (object)
  +  "Wipes out all direct properties and their values from OBJECT."
  +  (if (std-object-p object)
  +      (std-sheeple:remove-all-direct-properties object)
  +      (smop:remove-all-direct-properties (object-metaobject object) object)))
   (defun std-sheeple:remove-all-direct-properties (object)
     (change-mold object (ensure-mold (object-parents object) #()))
     object)
  -(defun remove-all-direct-properties (object)
  -  "Wipes out all direct properties and their values from OBJECT."
  -  (if (std-object-p object)
  -      (std-sheeple:remove-all-direct-properties object)
  -      (smop:remove-all-direct-properties (object-metaobject object) object)))
   
   
   ;;;
   ;;; Value
   ;;;
  +(defun property-value (object property-name)
  +  "Returns the property-value for PROPERTY-NAME found first in OBJECT's hierarchy list.
  +If the value does not exist in the hierarchy list, a condition of type `unbound-property'
  +is signaled."
  +  (if (std-object-p object)
  +      (std-sheeple:property-value object property-name)
  +      (smop:property-value (object-metaobject object) object property-name)))
   (defun std-sheeple:property-value (object property-name)
     (check-type property-name symbol)
     (dolist (ancestor (object-hierarchy-list object)
  
positive.code:         (add-writer-to-object `(setf ,accessor-name) property-name object))))
    ;; Finally, for SETF-compliance, we return the value.
    new-value)
  (defun (setf property-value) (new-value object property-name &rest options)
    (if (std-object-p object)
        (apply #'(setf std-sheeple:property-value) new-value object property-name options)
        (apply #'(setf smop:property-value) new-value
               (object-metaobject object) object property-name options)))
  
  ;;;
  ;;; Special Properties
  
negative.code: ;;;
  ;;; Reflection API
  ;;;
  (defun property-owner (object property-name)
    "Returns the object, if any, from which OBJECT would fetch the value for PROPERTY-NAME"
    (if (std-object-p object)
        (std-sheeple:property-owner object property-name)
        (smop:property-owner (object-metaobject object) object property-name)))
  (defun std-sheeple:property-owner (object property-name)
    (find-if (rcurry 'direct-property-p property-name) (object-hierarchy-list object)))
  
  (defun direct-properties (object)
    "Returns a list of the names of OBJECT's direct properties -- ie, only ones which have been
  