These are very small scale maps, often no larger than a single building or room. You’ll find these maps mostly in RPG modules and adventures. They allow the Dungeon Master to understand where the players are fighting. When shared with the players, they can serve as a battlemap on which they can see what is happening during combat. Sometimes a simple black and white map is enough to show the general layout. Other times they can be detailed full-color maps that show exactly what’s going on.