| Interface | Description | 
|---|---|
| GridLocale | Interface for a Room that virtually contains other rooms, which are
 called grid-child rooms. | 
| LocationRoom | This is a type of room that can be located as a coordinate on a
 planet's surface. | 
| Room | A Room, also known as a Locale, is the basic building blocks of a world
 map. | 
| Class | Description | 
|---|---|
| GridLocale.CrossExit | class definition for an exit that goes from inside a grid locale child to a place
 outside the parent gridlocale room | 
| Enum | Description | 
|---|---|
| Room.VariationCode | Room titles and descriptions can be coded with xml/html-like tags that denote
 different parts that are shown or hidden depending on the weather, the season,
 the time of day, or even whether the player has been to the room before. |