A named tile defines the properties of a map tile. A map tile is a rectangular piece of a map and, like pieces of a jigsaw puzzle, map tiles fit together to make up an entire map. A named tile defines the bounds of the map tile and the larger map that the tile is part of. Dividing a map into separate map tiles can greatly reduce the time required to display a map, particularly if you want to display only a small part of it.
Named tiles are created using Spatial Manager.
For more information about named tiles, see the Resources and Data section of this guide.