The menus view of the Interface Builder can be used to define a menu system for the current interface. Click the Menus tab to switch to the menus view from any other view in the Interface Builder. The Interface Builder appears as shown in Displaying the menu structure of an interface.
Figure 19.5 Displaying the menu structure of an interface
The menus view has two areas, together with six buttons which are used to create different menu elements. As with layouts, it is important to understand how CAPI menus are constructed. See the CAPI User Guide for details.
LispWorks IDE User Guide (Windows version) - 25 Nov 2011