Global structure

Xyz-Module {identification of module}DEFINITIONSmodule defaults ::=BEGIN-- comment IMPORTS list; EXPORTS list; My-type ::= type definition …… my-val My-type ::= value definition ……END

An object identifier value(optional)

E.g. “IMPLICIT TAGS” (optional)

Sometimes seen - less common

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The highest structure is the ASN.1 module

Modules import and export reference names

Type assignments to reference names

Value assignments to reference names

Module identification and defaults in header

“END” statement