The main dock
Apps, previews, magnification and position.
Pinned and running apps
Pinned and running apps sit side by side. A dot shows that an app is running, and a small number shows how many windows it has.
Live window previews
Hover a running app to see live previews of its open windows. Click a preview to switch to that window. Previews work for normal app windows.
Magnification
Icons grow as the pointer moves across the dock. Adjust strength and reach in Settings, or turn it off.
Arrange and position
Drag to reorder apps and widgets, and drop files or folders onto the dock. Place the dock on the bottom, top, left or right edge; centre or align it; let it fit the screen or its content.