| Value | Meaning |
|---|---|
| singleASN1TypesingleAbstractSyntaxNotation1Type | single-ASN1-type [0] ABSTRACT-SYNTAX.&Type |
| singleAbstractSyntaxNotation1Type0x00u | single-ASN1-type [0] ABSTRACT-SYNTAX.&Type |
| octetAligned0x01u | octet-aligned [1] IMPLICIT OCTET STRING |
| arbitrary0x02u | arbitrary [2] IMPLICIT BIT STRING |
The CHOICE of encoding used for the encoding of a pre-1994 EXTERNAL, as used by the Basic Encoding Rules, Canonical Encoding Rules, or Distinguished Encoding Rules.