A combined crib and playpen assembly includes a playpen body, a hanging bed, and a bassinet unit. An abnormality detector of the voltage detection apparatus detects an abnormality of the voltage detectors in accordance with the voltages between both ends of the current detection elements. The in-device coexistence interference indication control method is advantageous in preventing the UE from transmitting useless in-device coexistence interference indication messages, resulting in reduction of unnecessary signaling. Further a novel magnetic resonance apparatus and a computer program product are described, which are designed for performing the above mentioned method. More specifically, the invention provides a hand engraving power tool that is activated from absence of power to much greater power or anywhere in between determined by the amount of pressure exerted by a human hand on the tool’s handle. Subsequently, the localized unevenness is detected in the contour line and eliminated from the contour line, so that an incomplete contour line results as a function of the location variable, which characterizes the surface without the localized unevenness.