An S60 menu is typically shown when the user presses the Options softkey
(CBA button). Options menus are constructed from menu bar and menu
pane resources specified in the resource file (.rss).
The menu bar contains one or more menu panes, each of which contains menu
items, that is, menu commands. Once the user selects a menu item, the Avkon
framework calls the applicable command handler depending on the application
architecture being used.