| Class | Description | 
|---|---|
| DrawingPrinter | 
 This class implements the image printing functionality. 
 | 
| Settings | 
 This class contains all of the settings and parameters used by ePad
 application and it can retrieve them dynamically from a XML file. 
 | 
| Timer | 
 This class implements a simple timer that returns a value on demand. 
 | 
| TTSManager | 
 This class initialises and manages the Text-To-Speech system
 (freeTTS).See http://freetts.sourceforge.net/docs/index.php for more information about
 the system. 
 | 
| Tween | 
 This class provides simple tweening functionality useful for time-based
 animation. 
 |