Some zones have been configured to "broadcast" unique identifiers to other zones within the portal; if so, you'll see a broadcast icon,
![Broadcast Button Broadcast Button](../WACS_22B/images/BP01SWS_Broadcast_Button.jpg)
, in the first column. Clicking the icon causes specific zones to reload - these zones that have been configured to rebuild when the unique identifier is received. For example, you might have configured a zone to display the image of a bill when a bill ID is broadcast from an info zone.