| Debug |
| Network |
| Options |
| Web |
| XML |
| Display | Static functions used to display messages (normal, trace, debug. |
| File | |
| Modifiable | This abstract class allows to know whether an object has been modified or not since it was created or read from persistent storage |
| Persistent | This abstract class allows to know whether an object has been modified or not since it was created or read from persistent storage |
| Time | |
| Util | |
| VarContainer |