anchor.diff:  ;; with-sheet-medium (medium sheet) &body body [Macro]
   ;; with-sheet-medium-bound (sheet medium) &body body [Macro]
   
  -(defgeneric sheet-medium (sheet)) 
  -(defgeneric medium-sheet (medium)) 
  -(defgeneric medium-drawable (medium)) 
  +(defgeneric sheet-medium (sheet))
  +(defgeneric medium-sheet (medium))
  +(defgeneric medium-drawable (medium))
   (defgeneric port (medium))
   
   ;;;; 8.3.4.1 Grafting and Degrafting of Mediums
  
positive.code: 
  (defgeneric compose-space (pane &key width height))
  (defgeneric allocate-space (pane width height))
  (defgeneric change-space-requirements (pane &key resize-frame &rest space-req-keys))
  (defgeneric note-space-requirements-changed (sheet pane))
  ;; changing-space-requirements (&key resize-frame layout) &body body [Macro]
  
  
negative.code: ;;; Library General Public License for more details.
  ;;;
  ;;; You should have received a copy of the GNU Library General Public
  ;;; License along with this library; if not, write to the
  ;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  ;;; Boston, MA  02111-1307  USA.
  
  (in-package :CLIM-INTERNALS)
  