anchor.diff:                       (gethash id omap)
                      (unless value-p
                        (error "Unknown backlink ID ~D." id))
  +                   (when *noisy-load*
  +                     (format t "BACKLINK ~S~%" id))
                      (vector-push-extend value stack))))
                 (#.+llf-add-backlink+
                  (let ((id (load-integer stream)))
  
positive.code:          (setf (aref vec i) (load-integer stream)))
         vec))
      (#.+llf-ratio+
       (/ (load-integer stream)
          (load-integer stream)))
      (#.+llf-array+
       (load-llf-array stream stack))
      (#.+llf-funcall+
  
negative.code:                    (declare (ignore existing-value))
                     (when existing-value-p
                       (error "Duplicate backlink ID ~D." id)))
                   (when *noisy-load*
                     (format t "ADD-BACKLINK ~S~%" id))
                   (setf (gethash id omap) (vector-pop stack))))
                (t (let ((value (multiple-value-list (load-one-object command stream stack))))
                     (when value
  