| Interface | Description | 
|---|---|
| Outline | 
 Represents an outline that wraps a rectangle. 
 | 
| Class | Description | 
|---|---|
| FlexibleOutline | 
 Flexible outline that has a different thickness for each edge. 
 | 
| NoOutline | 
 An outline that is empty. 
 | 
| UniformOutline | 
 Outline that have the same thickness for all edges. 
 |