This section contains the node registration information.  These lines must
 not begin with an equals sign (=) in the first character position.  If a
 node uses an equals sign as the first character in its name, indent the
 name by at least one space.

 The format for a node information line is:

   name  synonym {TOWER=tower, TOWER=tower, ..., TOWER=tower}

 Where:

   name      The terminating part of the name for the node.  This is
             generally the part of the name that is the same regardless
             of the directory service.  For example, "MailHub" is the
             terminating name for the following:

                 Local:      MailHub
                 DECdns:     MyCo:.Sales.MailHub

             When importing into the Phase IV Database, this is ignored
             and the synonym field used used, if a synonym is defined.
             If a synonym is not defined, and the name is not Phase IV
             compatible, an error results.

   synonym   The Phase IV synonym for the node, if any.  This is optional.

   tower     A tower value for the node.  The format for an individual
             tower is the same as it is in a TOWERS parameter.  See the
             ADDRESS_TOWERS topic for a description of this format.

             All directory services except the Phase IV database support
             multiple towers.  If importing into the Phase IV Database,
             the first Phase IV compatible tower is used.

             The braces surrounding the list of towers are required.

 For example:

   MailHub  MLHUB  {Tower=12.2, Tower=37:840:0001:08-00-2B-0D-E9-B1:21}