USERINFO, Z3950_PREFIX.10.1000.81.2, "Cookie"
USERINFO, Z3950_PREFIX.10.1000.81.3, "Client-IP"
USERINFO, Z3950_PREFIX.10.1000.81.4, "Scan-Set"
+USERINFO, Z3950_PREFIX.10.1000.81.5, "Facet-1"
ELEMSPEC, Z3950_PREFIX.11.1, "Espec-1"
VARSET, Z3950_PREFIX.12.1, "Variant-1"
SCHEMA, Z3950_PREFIX.13.1, "WAIS-schema"