Show/Hide Map Layers:
You can edit which may layers display or hide to help customize your map. Click on the three-bar button on the right to open the map editing tools and select "Customize Map."
This will open an extensive list of layers in the map. You can click specific layers "off" to hide them from displaying.
For example, if you are creating a map of the US for a project, you might choose to hide world water, world capitals and world country labels for a cleaner, focused view of America.