Minecraft wiki entry for Classroom_Mode, associated text: A game world map is available on the left. To navigate the map, the player can scroll up and down to zoom the map in and out to gain the right view. Above the map, the X Y Z coordinates appear at the cursor position. The player can also pan the map as needed. Note that large black areas of the map are parts of the world that have not been loaded or discovered yet by players. They appear once players travel to these locations.