Frequently, Response Policy Zones get to be very large, so it is customary to update them over IXFR.
-An RPZ can be loaded from file over slaved from a master. To load from file, use:
+An RPZ can be loaded from file or slaved from a master. To load from file, use:
```
rpzFile("filename", ..settings.. )
To slave from a master and start IXFR to get updates, use:
```
-rpzMaster("1.2.3.4", "policy.rpz", ..settings..)
+rpzMaster("192.0.2.4", "policy.rpz", ..settings..)
```
In this example, 'policy.rpz' denotes the name of the zone to query for.