An electrical stimulation lead includes a lead body with electrodes disposed along the distal end portion of the lead body and terminals disposed along the proximal end portion of the lead body. The invention includes receiving an indicator on a first transmission frequency having no associated uplink service. Consistent single dimensional values regardless of the dimensionality of the original data set can be obtained by finding a relationship between the single dimensional value and the probability of status of the system. The method further includes transmitting the control signal to the RAID card, to direct the RAID card to set the stored RAID level, testing whether the stored RAID level is correctly set, and storing data indicative of the tested result in a register of the RAID card. A method of making such a thin film transistor includes the steps of: depositing a first metal layer comprising a material exhibiting tensile stress on a substrate, depositing a second metal layer exhibiting compressive stress on the first metal layer; patterning the second metal layer and the first metal layer such that the first metal layer is wider than the second metal layer. Embodiments of a rail structure can include a channel to pass wires used to power accessories mounted to the rail.