nnel, const AddressOrGUID systemIdentifier, bool broadcast, bool invokeLocal);<br>
    bool CallBlocking( const char* uniqueID, RakNet::BitStream * bitStream, PacketPriority priority, PacketReliability reliability, char orderingChannel, const AddressOrGUID systemIdentifier, RakNet::BitStream *returnData );</p>
    <p>Signal will call all functions registered with that identifier using RegisterSlot(), including potentially on the same system. CallBlocking() will call a single function on a single system, r