Bibliographic File Identifier
This field shall specify an identification for a file described by the Root Directory and containing an abstract
statement for those volumes of the Volume Set the sequence numbers of which are less than, or equal to, the
assigned Volume Set size of the volume. If all bytes of this field are set to (20), it shall mean that no such file is
identified.
Extension of an Abstract File Identifier shall not contain more than three d-characters.
This field shall specify an identification for a file described by the Root Directory and containing bibliographic
records interpreted according to standards that are the subject of an agreement between the originator and the
recipient of the volume. If all bytes of this field are set to (20), it shall mean that no such file is identified. The
File Name of a Bibliographic File Identifier shall not contain more than eight d-characters. The File Name
Extension of a Bibliographic File Identifier shall not contain more than three d-characters.
This field shall specify the date and the time of the day at which the information in the volume was created. It
shall be recorded according to 8.4.26.1.
The date and time shall be represented by a 17-byte field recorded as follows.
of 15 min intervals from -48 (West) to +52
(East) recorded according to 7.1.2
that the date and time are not specified.
This field shall specify the date and the time of the day at which the information in the volume was last
modified.
This field shall specify the date and the time of the day at which the information in the volume may be regarded
as obsolete. If the date and time are not specified then the information shall not be regarded as obsolete.