When a new BIND DNS zone is created, the directives entered into this text box will be added to the zone's section in the `named.conf` configuration file. For example, you could enter the following to limit zone transfers to a selected IP addresses :

    allow-transfer {
      1.2.3.4;
      1.2.3.10;
    };

This feature should only be used by those already familiar with the BIND configuration format, as a mistake could cause your entire DNS server to stop working.