A computer implemented method, apparatus, and computer program product for a first pull down menu associated with a user interface. Users are associated in the social network as a response for association request messages from both users. Rotating the agents about the rods in different angles can provide the desirable configuration of the construction. An indicator, including range and depth indicators, provides information as to the distance to the target and, if it is below the water, its depth. The data rate that would be required to transmit each alternative encoded bit stream is determined and compared with a predetermined target bit rate, which is set according to the transmission rate buffer status.