When a request for a web page is received on a server from a client, the web page is returned to the client with a client program and a program tag. The control system comprises a trace control element and a gravity compensation element. Once determined, a messaging process, which is responsive to the security look-up process, sends the received security order to the securities processor to which the specific security is assigned. Moreover, the electrode system optionally comprises a plurality of microelectrodes projecting radially away from the probe body, said microelectrodes being suited for recording neurophysio logic potentials. The wicking material is configured to absorb the liquid phase, and the vapor phase is provided in the gap.