anchor.diff:  ;;;    Author: Gilbert Baumann <unk6@rz.uni-karlsruhe.de>
   ;;;   License: LGPL (See file COPYING for details).
   ;;; ---------------------------------------------------------------------------
  -;;;  (c) copyright 2001 by Gilbert Baumann
  +;;;  (c) copyright 2001,2002 by Gilbert Baumann
   
   ;;; This library is free software; you can redistribute it and/or
   ;;; modify it under the terms of the GNU Library General Public
  
positive.code:   (funcall continuation sheet))
  
  
  
  
negative.code: (defgeneric destroy-mirror (port mirrored-sheet))
  (defgeneric raise-mirror (port sheet))
  (defgeneric bury-mirror (port sheet))
  
  ;; 9.4.2 Internal Interfaces for Native Coordinates
  
  