A water base ink for ink-jet recording contains 0. The first leg may be configured for insertion into a bushing well in a transformer, the bushing well including a conductive stud therein. The data signal is processed, providing binary data representative of the data signal. However, if the event datagram is lost, the client transmits every checksum of the leaf nodes in its tree data structure in one request datagram to the web server, and performs data synchronization by receiving changed data from the web server.