Routines to the Edit Menu

   NAME : cut_paste
   PARAMETERS : int item_no
                Item number of the Edit Menu where this function was called
   RETURN : void
   DESCRIPTION : Depending of the item_no, it decides to cut, copy, paste
                 delete or undo
   
   NAME : Setmenu
   PARAMETERS : Not used
   RETURN : void
   DESCRIPTION :This function sets the items cut and copy to
                be sensitive or not depending if there is
                a selected text or not