The following classes have been made obsolete from 
version 3.3.7:

Kernel classe:
IO_HANDLER

Oui widget classes:
LABEL_G, PUSH_BG, SEPARATOR_G, TOGGLE_BG, SCROLL_LIST
LIST_MAN, MESSAGE, PROMPT

Context data classes:
CIRCNOT_DATA, FOCSOUT_DATA, MAPREQ_DATA, SELCLR_DATA
CIRCREQ_DATA, FOCUSIN_DATA, MESSAGE_DATA, SELNOT_DATA
CLRMAP_DATA, GRAPEXP_DATA, MULTIPL_DATA, SELREQ_DATA
CONFNOT_DATA, GRAVNOT_DATA, NOEXP_DATA, TOGGLE_DATA
CONFREQ_DATA, KEYMAP_DATA, PROPERT_DATA, UNMAP_DATA
CREATE_DATA, LEAVE_DATA, REPAREN_DATA, VISIBLE_DATA
DESTROY_DATA, MAPNOT_DATA, RESIZE_DATA, ENTER_DATA     
MAPPING_DATA, SCALE_DATA

To include these obsolete classes into your application
you must follow these steps:

1. If you are using MOTIF, change the declaration of the toolkit 
   initialization from MOTIF to OBSOLETE_MOTIF (for windows, change 
   the declaration from MS_WINDOWS to OBSOLETE_MS_WINDOWS)
2. Include the following clusters into your Ace file:
   obsolete_oui:    "$ISE_EIFFEL/library/vision/obsolete/oui";
   obsolete_toolkit:"$ISE_EIFFEL/library/vision/obsolete/toolkit";
   obsolete_motif:  "$ISE_EIFFEL/library/vision/obsolete/motif";