A security bar for use with a truck having a hauling bed includes an elongated cross bar, a pair of end plates, and a pair of fastening elements used to attach the security bar to the hauling bed. The IO subsystem requests that the on-line CPU provide certain register and memory state information to general purpose registers on an IO board. A configuration may be selected for performing the recording. The first feedback loop is active irrespective of whether clock distribution is enabled. The optical compensation sheet is attached to a rotational adjusting mechanism provided on the chassis so that it can be rotatively adjusted within a plane perpendicular to an optical axis L. The even-numbered conductive lines are extends in a second direction along the surface of the semiconductor substrate.