Library /sys$common/syshlp/dns$cphelp.hlb add, object, example  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 The following command adds the value "ps" to the user-
 defined set-valued attribute printcap of an object entry named
 .sales.east.deskprinter.

 dns>add object .sales.east.deskprinter printcap "ps"