An article of furniture has been developed having a tilting tabletop mechanism, which securely maintains a tabletop in either a generally horizontal or generally vertical position while permitting a user to tilt the tabletop easily. If the response to the information query is contained in the embedded information, then the embedded information is displayed to the user. The ions can be selected from the group consisting of H+, He+, Ne+, Ar+, Kr+, and Xe+. An image window of the camera is referenced to the reference path. An intermediate wall 2 for defining the inside of a transmission case 1 into one side and the other side, is provided with cylinder chambers of brakes B1 and B2, and a supporting portion 22 for supporting a member 4 serving as a clutch drum of the third clutch C3. A second plated layer is further formed on the first plated or electrodeposited layer and on the electrically-conductive portion by electroless plating to reduce a size distribution of microstructures over the array.