<programlisting>

<command>zone</command> <replaceable>string</replaceable> [ <replaceable>class</replaceable> ] {

<command>type</command> stub;

<command>allow-query</command> { <replaceable>address_match_element</replaceable>; ... };

<command>allow-query-on</command> { <replaceable>address_match_element</replaceable>; ... };

<command>check-names</command> ( fail | warn | ignore );

<command>database</command> <replaceable>string</replaceable>;

<command>delegation-only</command> <replaceable>boolean</replaceable>;

<command>dialup</command> ( notify | notify-passive | passive | refresh | <replaceable>boolean</replaceable> );

<command>file</command> <replaceable>quoted_string</replaceable>;

<command>forward</command> ( first | only );

<command>forwarders</command> [ port <replaceable>integer</replaceable> ] [ dscp <replaceable>integer</replaceable> ] { ( <replaceable>ipv4_address</replaceable> | <replaceable>ipv6_address</replaceable> ) [ port <replaceable>integer</replaceable> ] [ dscp <replaceable>integer</replaceable> ]; ... };

<command>masterfile-format</command> ( map | raw | text );

<command>masterfile-style</command> ( full | relative );

<command>masters</command> [ port <replaceable>integer</replaceable> ] [ dscp <replaceable>integer</replaceable> ] { ( <replaceable>masters</replaceable> | <replaceable>ipv4_address</replaceable> [ port <replaceable>integer</replaceable> ] | <replaceable>ipv6_address</replaceable> [ port <replaceable>integer</replaceable> ] ) [ key <replaceable>string</replaceable> ]; ... };

<command>max-records</command> <replaceable>integer</replaceable>;

<command>max-refresh-time</command> <replaceable>integer</replaceable>;

<command>max-retry-time</command> <replaceable>integer</replaceable>;

<command>max-transfer-idle-in</command> <replaceable>integer</replaceable>;

<command>max-transfer-time-in</command> <replaceable>integer</replaceable>;

<command>min-refresh-time</command> <replaceable>integer</replaceable>;

<command>min-retry-time</command> <replaceable>integer</replaceable>;

<command>multi-master</command> <replaceable>boolean</replaceable>;

<command>transfer-source</command> ( <replaceable>ipv4_address</replaceable> | * ) [ port ( <replaceable>integer</replaceable> | * ) ] [ dscp <replaceable>integer</replaceable> ];

<command>transfer-source-v6</command> ( <replaceable>ipv6_address</replaceable> | * ) [ port ( <replaceable>integer</replaceable> | * ) ] [ dscp <replaceable>integer</replaceable> ];

<command>use-alt-transfer-source</command> <replaceable>boolean</replaceable>;

<command>zone-statistics</command> ( full | terse | none | <replaceable>boolean</replaceable> );

};

</programlisting>