Minecraft wiki entry for Map, associated text: In Bedrock Edition, a map can be crafted with or without this marker, and a map without a position marker can add one later by adding a compass to the map. When a map is crafted without a compass, it's simply called an "empty map", but when crafted with a compass, it's called an "empty locator map". The marker also turns red if the player enters the Nether with an Overworld map and show the player's Overworld location relative to the Nether location. A map created in the End has a purple marker showing the player's location. If an Overworld map is used in the End, a magenta dot appears on the player's spawn point.