Desktop, Dock, and menu bar

The Desktop is a folder and a workspace. The Dock launches apps and shows running ones. The menu bar contains the active application menu and system controls. These three parts stay on screen while windows come and go.

The Desktop is a real folder

Everything you see on the desktop background lives in a folder inside your home directory. Prove it:

open ~/Desktop

A Finder window opens showing the same items. Files are never “on the screen” — the wallpaper area is one more view of the ~/Desktop folder.

The Dock

The Dock has two zones separated by a thin divider: applications on one side, then minimized windows, folders, and the Trash on the other. A small dot under an icon means that application is running.

Right-click a Dock icon to see its options. Options → Keep in Dock pins an app you use often. Dragging an app out of the Dock removes the shortcut, not the application.

The menu bar

The menu bar changes when you switch apps. The bold name right after the Apple logo always tells you which application is active. Look there when you cannot find a command inside a window: Mac apps put their commands in the menu bar, not in the window itself.

The right side holds status menus, Control Center, and the clock. The Apple menu on the far left never changes, and contains system-wide actions like Sleep and Shut Down.

Closing is not quitting

Closing the last window does not always quit a Mac app. The app keeps running with zero windows: the menu bar still shows its name and the Dock dot stays lit.

This is the most common point of confusion for people arriving from Windows. You close Safari’s last window, then wonder why the menu bar still says Safari. It is still open. Use Command-Q when you want to stop the application itself, or right-click its Dock icon and choose Quit.

To verify the difference: close a window and watch the Dock dot stay. Press Command-Q and watch it disappear.