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→2.4 Technical Elements of Records
'''Subfield identifier''' - A code consisting of two characters to identify individual subfields within a
variable field. The first character is always control function 1/15 from [[wikipedia:en:ISO /IEC 646 |ISO 646]] and the second
character is either numeric or alphabetic. Subfield identifiers are synonymous with data element
identifiers.
'''Field separator''' - A control character used at the end of each variable field to separate it from the
next field (control function 1/14 of [[wikipedia:en:ISO /IEC 646|ISO 646]]).
'''Record terminator''' - The final character in each record (control function 1/13 from [[wikipedia:en:ISO /IEC 646|ISO 646]]).
== Див. також ==