by reference basemap

A by reference basemap is a basemapA basemap layer is the layer in a map or scene that displays basemap data. The data source for a basemap layer is typically a basemap service.Learn more that already exists on a deviceA device is nearly any kind of computer, including desktops, laptops, mobile phones, and tablets.Learn more. Using a by reference basemap can significantly reduce the time taken to download an offline mapAn offline map is a map area and its data content downloaded from an offline-enabled web map for use in offline applications built with ArcGIS Maps SDKs for Native Apps.Learn more. A by reference basemap is identified by a reference basemap filename and a directory property. Developers can set the by reference basemap properties using on-demand or planned parameters.