Some application modules of a sidebar comprise a list of items. For example, an email module comprises message items while a photo slideshow does not comprise items. In known sidebars, the number of items in an application module display area is not discrete. For example, in an email module the last item in the list can be partially displayed. In one embodiment, application modules that comprise items are forced to display a whole number of menu items. When a user resizes an application module, the application module will “snap” to fully include or fully exclude an item as opposed to displaying a partial item. A whole item display format can also be implemented in an application module's slidesheet.