In a network having nodes that operate according to a protocol that defines a node as being in an idle mode when the node is not transmitting or receiving a packet, a method of communicating between nodes during the idle mode. The charge neutralization system is configured to provide a compensating current to control a charge on a front surface of a wafer. The manifold is supplied with abrasive material via a plurality of angularly attached sand supply hoses which are coupled to an abrasive material supply. The external address used as the destination address for the host may then be translated into the local address for the host. Subsequent requests for mapping data may then return categories of POIs according to the type of user sending the request based on the bias value.