Historical
INCITS/ISO/IEC 8825-3:2015 (2019)
Information technology -- ASN.1 encoding rules: Specification of Encoding Control Notation (ECN)
Defines a notation for specifying encodings of ASN.1 types or of parts of types. It provides several mechanisms for such specification, including: direct specification of the encoding using standardized notation; specification of the encoding by reference to standardized encoding rules; specification of the encoding of an ASN.1 type by reference to an encoding structure; specification of the encoding using non-ECN notation. It also provides the means to link the specification of encodings to the type definitions to which they are to be applied.
InterNational Committee for Information Technology Standards [incits]