LEADER (NR)
The leader has no indicators or subfield codes; the data elements are positionally defined.
00-04 Record length 05 Record status a Increase in encoding level c Corrected or revised d Deleted n New o Obsolete s Deleted; heading split into two or more headings x Deleted; heading replaced by another heading 06 Type of record z Authority data 07-08 Undefined character positions Contains a blank (^) or a fill (|) character 09 Character coding scheme ^ MARC-8 a UCS/Unicode 10 Indicator count 11 Subfield code length 12-16 Base address of data 17 Encoding level n Complete authority record o Incomplete authority record 18-19 Undefined character positions Contains a blank (^) or a fill (|) character 20-23 Entry map