Menus and the Menu Bar
Menus contain a list of commands, states, and submenus that can be chosen with the mouse. The Mac OS X menu bar stretches across the top of the screen and is always visible, except when a slide show, full-screen video, or some other display application takes over the entire screen. The Apple menu , which drops down when the Apple icon (
) at the top left of the screen is clicked, is always available, even during application and document modal periods. The Apple menu, shown in Figure 1-13, is controlled by the operating system, not by any one application or by the user.

Figure 1-13. The Apple menu is always available and is controlled by the operating system
To the immediate right of the Apple menu is the application menu . The application menu changes depending on the active application, and it displays the active (or current) application’s name in bold text. By convention, the application menu contains commands that affect the entire application, such as Preferences, Hide Others, and Quit. The application menu for the TextEdit application is shown at the left in Figure 1-14.

Figure 1-14. Menu bar for TextEdit (top), with Application, File, Edit, and Window menus ...
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