| Class | Description | 
|---|---|
| Condition | Class representing one characteristic of a world state | 
| Plan | Class representing a series of steps comprising an A* search derived plan | 
| Planner | Abstract class for conducting an A* search | 
| PlanStep | Class representing a single step in an A* search derived plan | 
| SelfPruningPlanner | |
| WorldState | Abstract class representing the world state at some point of the A* search |