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Like any modern gadget, the iPod uses a series of menus and submenus to control it. You can recognize the Classic’s top-level, or main, menu because it says “iPod” at the top of the screen. No matter how deeply you burrow into the player’s submenus, you can always get back to this main menu by repeatedly pressing the Menu button on the click wheel.
In fact, think of Classic navigation like this: Press the round center button to go deeper into menus and press the Menu button to back out, retracing your steps along the way.