----------------------------------------------
Author : ied
Date   : 26/11/1998
Object : Initialisation of the history for K4L
----------------------------------------------
Author : CKY
Date   : 10/03/1999
Object : Add access modes to CaseData (edit on-the-spot, remove, access by type)
----------------------------------------------
Author : CKY
Date   : 01/04/1999
Object : New features for S4123 : where already defined elsewhere, moved here
	for architectural reason (these are basic data structures)
	They are : mapping element, attribute list, typed value, enum for Type
	One really new class : RealVal (for a simple Real through a Handle)
----------------------------------------------
Author : CKY
Date   : 28/04/1999
Object : the list of static values is now brought here, not only from
	Interface_Static (which uses it in RW mode). Here, only read mode
	(i.e. to get a value, not to add one)
----------------------------------------------
Author : CKY
Date   : 11/06/1999
Object : _DB : debug in AddFrom
----------------------------------------------
Author : CKY
Date   : 06/07/1999
Object : introducing class Printer, as driver for message sending
----------------------------------------------
Author : CKY
Date   : 27/07/1999
Object : optimisation in _DB (Sequence -> HSequence)
----------------------------------------------
