Auhtority rekordfej szerkesztése (szakasz)

== FIELD DEFINITION AND SCOPE ==


:First field of an authority record. It is fixed in length at 24 character positions (00-23). The Leader consists of data elements that contain numbers or coded values that define the parameters for the processing of the record.

:Character positions 20-23 comprise the Entry map for the Directory. They contain four one-character numbers that specify the structure of the entries in the Directory. More detailed information about the structure of the Leader is contained in [http://www.loc.gov/marc/specifications/ MARC 21 Specifications for Record Structure, Character Sets, and Exchange Media].