Previous versions of APEX used tabs that acted as an application’s main menu up to version 4.2. In APEX 18.1, a default navigation list named the desktop navigation menu is created automatically as a shared component for each new application. This provides the user with a hierarchical set of pull-down menus and submenus. It is displayed as a responsive sidebar. Based on the available space, the navigation bar either displays as a full menu or collapses to a narrow icon bar.