This field contains the code that determines the language you will use on this segment line.
When you select a contact on a segment line, he will be assigned a language based on the following rules:
If a language code has been defined in the Segment Interaction Languages window which corresponds to the contact's preferred language, then the preferred language will be assigned to the contact on the segment line.
If a language code has not been defined in the Segment Interaction Languages window which corresponds to the contact's preferred language, then the language defined in the Language Code (Default) field in the Segment window will be assigned to the contact on the segment line.
The Subject and Attachment fields reflect the values specified in the Segment Interaction Languages window with the same language code as the segment line.