562 Subfield $d - Presentation format:

Subfield $d contains the presentation format in which the recorded materials, regardless of their current medium, were intended to be used, seen, or heard (e.g., a film made for TV or a text intended for oral proclamation).

Example:

562 ##$3The best get better Sue Hershkowitz$e2 copies$dOriginally given orally as a keynote address.