| Interface | Description | 
|---|---|
| ComparableNameOwner | 
 The interface for element having some name. 
 | 
| NameOwner | 
 The interface for element having some name. 
 | 
| PriorityProvider | 
 An interface for marking objects that provide a priority. 
 | 
| Class | Description | 
|---|---|
| StateChangeHandler | 
 Class handling state changes in model and symbols. 
 | 
| Enum | Description | 
|---|---|
| StateChangeHandler.DirtyType | 
 Defines how much dirty is project. 
 |