Soft link names are used to map synonyms to their respective node
 names.

 The default value for the synonym mapping directory in the DECdns
 directory service is:

   .DNA_NodeSynonym

 The directory name can be changed for a single command using the
 REVERSE_MAPPING parameter, or for all commands using the SET DEFAULT
 command.

 This directory contains the actual soft link names.  The name structure
 is:

   .DNA_NodeSynonym.<synonym>

 Where:

   <synonym>     is the Phase IV synonym name.

 For example, for the synonym "MYSYN", the fully specified soft link name
 would be:

   .DNA_NodeSynonym.MYSYN