ation about the fax being sent and will insist on a particular data driver being used.</P>
<P>
The transport driver will select one (or none) of the formats and return it to the controller, which will return it to the application. If the transport driver indicates none of the formats is acceptable, the message controller will inform the user that the selected object (page, document, whatever) cannot be sent via the selected medium. The transaction will then be at an end.</P>
<P>
Each data format descriptor 