Additional Control Operators for the Concise Data Definition Language (CDDL), December 2021
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The Concise Data Definition Language (CDDL), standardized in RFC 8610, provides "control operators" as its main language extension point.
The present document defines a number of control operators that were not yet ready at the time RFC 8610 was completed: , , and for the construction of constants; / for including ABNF (RFC 5234 and RFC 7405) in CDDL specifications; and for indicating the use of a non-basic feature in an instance.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 8729.