bdfm1m18Messages (System Error, Online, Offline) and Master Glossary

N

NAB
Next available byte.

next available byte (NAB)
A 2-byte value contained in the header of each TPFDF block. This value indicates the next byte in the block available for placement of a new logical record.

node
A block containing pointers to other nodes or to data blocks. Synonymous with node block.

node block
Synonym for node.