A method for start-up and shut down of a fuel processor including an autothermal reformer employing a non-pyrophoric shift catalyst is disclosed. The minimum loss of the marginal rays is obtained by a light reflective surface of a predetermined degree of curvature formed on an optical device for diffuse-reflecting and altering an optical path of a light from a light source. A compiler generating different idempotent regions for speculation and exception handling is also disclosed. If a loss of RTC clock cycles exceeds a predetermined threshold such that the RTC is not reliable for GPS navigation, an RTC status signal so indicates. When the solder structure is reflowed and annealed, surface tension in the solder causes self-assembly of a three-dimensional, compliant solder structure. A connector housing includes a recess for rigidly embracing the first edge of the opening in the panel, and a flexible latch for engaging the second edge of the opening in the panel.