zone <string> [ <class> ] {
	type stub;
	allow-query { <address_match_element>; ... };
	allow-query-on { <address_match_element>; ... };
	check-names ( fail | warn | ignore );
	database <string>;
	delegation-only <boolean>; // deprecated
	dialup ( notify | notify-passive | passive | refresh | <boolean> ); // deprecated
	file <quoted_string>;
	forward ( first | only );
	forwarders [ port <integer> ]  { ( <ipv4_address> | <ipv6_address> ) [ port <integer> ]; ... };
	masterfile-format ( raw | text );
	masterfile-style ( full | relative );
	max-records <integer>;
	max-refresh-time <integer>;
	max-retry-time <integer>;
	max-transfer-idle-in <integer>;
	max-transfer-time-in <integer>;
	min-refresh-time <integer>;
	min-retry-time <integer>;
	multi-master <boolean>;
	primaries [ port <integer> ]  { ( <remote-servers> | <ipv4_address> [ port <integer> ] | <ipv6_address> [ port <integer> ] ) [ key <string> ] [ tls <string> ]; ... };
	transfer-source ( <ipv4_address> | * ) ;
	transfer-source-v6 ( <ipv6_address> | * ) ;
	use-alt-transfer-source <boolean>; // deprecated
	zone-statistics ( full | terse | none | <boolean> );
};