Data Item: byte string, array or map
Semantics (Short form): Private tags as suggested in <https://mailarchive.ietf.org/arch/msg/cbor/NJlskB63pjXFt5a6S37tiwJBbCM/>
Point of Contact: Unchained Infra Ops <cbor&unchained.com>
Description of semantics (URL): N/A