o another to ensure continued access to the
n.,
 The method of transmission of a record (e.g., by fax). [Archives] 
network 
n., A schematic description of a system, theory, or phenomenon that accounts for its known or inferred properties and may be used for further study of its characteristics. [General Dictionaries] 
namespace 
n.,
 The subject line(s) and/or the title at the top of the record. [Archives] 
natural hierarchy 
n., The name of the geographic place where the record was generated; included in 