| Actor |
| Repository |
| SubData |
| message | Each message is tied to a ticket. It has a sender, and a group, and regular message components. Also one or more files can be attached to a message. |
| ticket | This class defines a single ticket. A ticket has numerous properties, and one or more messages. |
| DataObject | An abstract class with no methods to server as a base class for use in the various actors. |