The present invention relates to a series of orthopedic plates for use in repair of a bone. The modular supporting structure comprises a lower cross member, a plurality of intermediate cross members, an upper cross member and a plurality of upright spacers, with each upright spacer interconnecting a pair of adjacently arranged cross members. A software-source selecting unit selects the software source based on the data stored in the memory unit when the peripheral-device monitoring unit detects the connection of the peripheral device. A play item showing the whole clip information file is formed and added to the existing play list on the recording medium. By so forming, a stress to be imparted to an optical fiber due to surrounding temperature variation can be lessened. The diffusion substrate exhibits low flow resistance for active fuel agents and electrochemical reaction products, high electrical cross plane conductance and a good mechanical integrity.