{
    "zone": {
        "_id": "<string> [ <class> ]",
        "_mapbody": {
            "type": {
                "_grammar": "secondary"
            },
            "allow-notify": {
                "_grammar": "{ <address_match_element>; ... }"
            },
            "allow-query": {
                "_grammar": "{ <address_match_element>; ... }"
            },
            "allow-query-on": {
                "_grammar": "{ <address_match_element>; ... }"
            },
            "allow-transfer": {
                "_grammar": "[ port <integer> ] [ transport <string> ] { <address_match_element>; ... }"
            },
            "allow-update-forwarding": {
                "_grammar": "{ <address_match_element>; ... }"
            },
            "also-notify": {
                "_grammar": "[ port <integer> ] [ source ( <ipv4_address> | * ) ] [ source-v6 ( <ipv6_address> | * ) ] { ( <server-list> | <ipv4_address> [ port <integer> ] | <ipv6_address> [ port <integer> ] ) [ key <string> ] [ tls <string> ]; ... }"
            },
            "check-names": {
                "_grammar": "( fail | warn | ignore )"
            },
            "checkds": {
                "_grammar": "( explicit | <boolean> )"
            },
            "database": {
                "_grammar": "<string>"
            },
            "dlz": {
                "_grammar": "<string>"
            },
            "dnskey-sig-validity": {
                "_flags": [
                    "obsolete"
                ],
                "_grammar": "<integer>"
            },
            "dnssec-dnskey-kskonly": {
                "_flags": [
                    "obsolete"
                ],
                "_grammar": "<boolean>"
            },
            "dnssec-loadkeys-interval": {
                "_grammar": "<integer>"
            },
            "dnssec-policy": {
                "_grammar": "<string>"
            },
            "dnssec-update-mode": {
                "_flags": [
                    "obsolete"
                ],
                "_grammar": "( maintain | no-resign )"
            },
            "file": {
                "_grammar": "<quoted_string>"
            },
            "forward": {
                "_grammar": "( first | only )"
            },
            "forwarders": {
                "_grammar": "[ port <integer> ] [ tls <string> ] { ( <ipv4_address> | <ipv6_address> ) [ port <integer> ] [ tls <string> ]; ... }"
            },
            "inline-signing": {
                "_grammar": "<boolean>"
            },
            "ixfr-from-differences": {
                "_grammar": "<boolean>"
            },
            "journal": {
                "_grammar": "<quoted_string>"
            },
            "key-directory": {
                "_grammar": "<quoted_string>"
            },
            "log-report-channel": {
                "_grammar": "<boolean>"
            },
            "masterfile-format": {
                "_grammar": "( raw | text )"
            },
            "masterfile-style": {
                "_grammar": "( full | relative )"
            },
            "max-ixfr-ratio": {
                "_grammar": "( unlimited | <percentage> )"
            },
            "max-journal-size": {
                "_grammar": "( default | unlimited | <sizeval> )"
            },
            "max-records": {
                "_grammar": "<integer>"
            },
            "max-records-per-type": {
                "_grammar": "<integer>"
            },
            "max-refresh-time": {
                "_grammar": "<integer>"
            },
            "max-retry-time": {
                "_grammar": "<integer>"
            },
            "max-transfer-idle-in": {
                "_grammar": "<integer>"
            },
            "max-transfer-idle-out": {
                "_grammar": "<integer>"
            },
            "max-transfer-time-in": {
                "_grammar": "<integer>"
            },
            "max-transfer-time-out": {
                "_grammar": "<integer>"
            },
            "max-types-per-name": {
                "_grammar": "<integer>"
            },
            "min-refresh-time": {
                "_grammar": "<integer>"
            },
            "min-retry-time": {
                "_grammar": "<integer>"
            },
            "min-transfer-rate-in": {
                "_grammar": "<integer> <integer>"
            },
            "multi-master": {
                "_grammar": "<boolean>"
            },
            "notify": {
                "_grammar": "( explicit | master-only | primary-only | <boolean> )"
            },
            "notify-cfg": {
                "_flags": [
                    "may occur multiple times"
                ],
                "_id": "<string>",
                "_mapbody": {
                    "notify": {
                        "_grammar": "<boolean>"
                    },
                    "notify-defer": {
                        "_grammar": "<integer>"
                    },
                    "notify-delay": {
                        "_grammar": "<integer>"
                    },
                    "notify-source": {
                        "_grammar": "( <ipv4_address> | * )"
                    },
                    "notify-source-v6": {
                        "_grammar": "( <ipv6_address> | * )"
                    }
                }
            },
            "notify-defer": {
                "_grammar": "<integer>"
            },
            "notify-delay": {
                "_grammar": "<integer>"
            },
            "notify-source": {
                "_grammar": "( <ipv4_address> | * )"
            },
            "notify-source-v6": {
                "_grammar": "( <ipv6_address> | * )"
            },
            "notify-to-soa": {
                "_grammar": "<boolean>"
            },
            "nsec3-test-zone": {
                "_flags": [
                    "test only"
                ],
                "_grammar": "<boolean>"
            },
            "parental-agents": {
                "_grammar": "[ port <integer> ] [ source ( <ipv4_address> | * ) ] [ source-v6 ( <ipv6_address> | * ) ] { ( <server-list> | <ipv4_address> [ port <integer> ] | <ipv6_address> [ port <integer> ] ) [ key <string> ] [ tls <string> ]; ... }"
            },
            "parental-source": {
                "_grammar": "( <ipv4_address> | * )"
            },
            "parental-source-v6": {
                "_grammar": "( <ipv6_address> | * )"
            },
            "plugin": {
                "_flags": [
                    "may occur multiple times"
                ],
                "_grammar": "( query ) <string> [ { <unspecified-text> } ]"
            },
            "primaries": {
                "_grammar": "[ port <integer> ] [ source ( <ipv4_address> | * ) ] [ source-v6 ( <ipv6_address> | * ) ] { ( <server-list> | <ipv4_address> [ port <integer> ] | <ipv6_address> [ port <integer> ] ) [ key <string> ] [ tls <string> ]; ... }"
            },
            "provide-zoneversion": {
                "_grammar": "<boolean>"
            },
            "request-expire": {
                "_grammar": "<boolean>"
            },
            "request-ixfr": {
                "_grammar": "<boolean>"
            },
            "request-ixfr-max-diffs": {
                "_grammar": "<integer>"
            },
            "send-report-channel": {
                "_grammar": "<string>"
            },
            "sig-signing-nodes": {
                "_grammar": "<integer>"
            },
            "sig-signing-signatures": {
                "_grammar": "<integer>"
            },
            "sig-signing-type": {
                "_grammar": "<integer>"
            },
            "sig-validity-interval": {
                "_flags": [
                    "obsolete"
                ],
                "_grammar": "<integer> [ <integer> ]"
            },
            "template": {
                "_grammar": "<string>"
            },
            "transfer-source": {
                "_grammar": "( <ipv4_address> | * )"
            },
            "transfer-source-v6": {
                "_grammar": "( <ipv6_address> | * )"
            },
            "try-tcp-refresh": {
                "_grammar": "<boolean>"
            },
            "update-check-ksk": {
                "_flags": [
                    "obsolete"
                ],
                "_grammar": "<boolean>"
            },
            "zero-no-soa-ttl": {
                "_grammar": "<boolean>"
            },
            "zone-statistics": {
                "_grammar": "( full | terse | none | <boolean> )"
            }
        }
    }
}