A powertrain arrangement for selectively operating a vehicle in a skid-steer configuration is provided. The test circuit is operable at start-up to operate one or more of the MEMS resonators to generate test output and analyze the test output to determine whether the operated MEMS resonators meet test criteria. A current system utilization of the output unit is monitored or measured during playback of the loaded data contents on the output unit. One or more contextual content elements that are not adjacent to the selected content in the user interface and that are determined to provide context to the selected content can be identified. The device marks I-beams faster and more accurately that was possible using prior art tools and techniques.