The Phase IV Database uses flat naming, rather than hierarchical
 naming.  Names can consist of up to 6 letters (A to Z) and decimal
 digits (0 to 9), with at least one letter.

 The Phase IV Database is private to a particular node or cluster.  As
 such, it must be manually kept up to date on all nodes if they are to
 share the same set of names.  This can be done by exporting the
 contents of a master copy of the Phase IV Database to a text file,
 copying the text file to other nodes as required, and importing the
 text file into the Phase IV Database for each such node.

 An example of a Phase IV Database name might be:

   MYNODE

 The Phase IV Database is supported primarily to allow the simple
 migration from DECnet Phase IV to DECnet-Plus and some other directory
 service.