Addition/Expansion of a Region/Zone ???Container??? Cell [0079]FIG. 11 illustrates the operational flow of the relevant aspects of an implementor, e.g. an application, a cell manager or a window manager, for responding to a request to add a region/zone ???container??? cell or an ???action??? cell to a region/zone ???container??? cell, or expand a region/zone ???container??? cell (hereinafter, for