| Class | Description | 
|---|---|
| App | 
 A STENCIL class that models an application and should contain your top-level
 class. 
 | 
| CS15Ball | 
 A SUPPORT class that models a pong ball. 
 | 
| CS15Paddle | 
 A SUPPORT class that models one pong paddle. 
 | 
| PongGame | 
 A STENCIL class that acts as the top-level logic class of the pong program. 
 |