When you use Dexterity to create a new application dictionary, the Main Menu form is created automatically in the dictionary. No window is added to the form, but a set of default form-based menus is. These include the File, Edit, Macro, Windows and Help menus.
Any menus that you want continuously available in the application must be part of the Main Menu form. Such menus are referred to as application-level menus. For more information about menus, refer to Form-based Menus.
You might also choose to use command-based menus for your application. Command-based menus provide additional flexibility, and the commands displayed in the menus can also be used on command-based toolbars. For more information, refer to Command-based Menus.