The layers are generally available on a server and are web-accessible tiles. The tile layer/Base map can be expanded in the contents panel, but the visibility of sublayers cannot be edited, added, or removed. Suitable background of geographical contents that the user wants to present can be provided by a base map. The base map can be selected according to the needs and can be changed through a base map gallery. A base map with multiple layers can also be created from a map viewer.