Every DECdns entity has attributes, which are pieces or sets of
 data associated with that entity. Characteristics are attributes
 that reflect or affect the operational behavior of an entity. The
 following are descriptions of valid characteristics:

 DNS$ChildCTS

 Specifies the creation timestamp (CTS) of the child directory
 referenced by the child pointer.

 DNS$CTS

 Specifies the CTS of the specified child pointer.

 DNS$Replicas

 Specifies the address, CTS, and name of a set of clearinghouses
 where a copy of the child directory referenced by the child pointer
 is located. This attribute also specifies whether the directory in a
 particular clearinghouse is a master or read-only replica.

 DNS$UTS

 Specifies the timestamp of the most recent update to an attribute of
 the child pointer.