RECSYN, Z3950_PREFIX.5.110.2, "wav"
RECSYN, Z3950_PREFIX.5.111, "SQL-RS"
RECSYN, Z3950_PREFIX.5.1000.81.2, "SOIF"
+RECSYN, Z3950_PREFIX.5.1000.81.3, "JSON"
RECSYN, Z3950_PREFIX.5.109.10, "XML"
RECSYN, Z3950_PREFIX.5.109.10, "text-XML"
RECSYN, Z3950_PREFIX.5.109.11, "application-XML"
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"