An optical recording medium having an information layer with a reflective film on which an information recording portion is formed by physical change of shape at least in one direction of thickness and track width, the reflective film having such a structure that additional recording can be performed by thermal recording, and that the reflectance of the reflective film changes in the range of 0. Particularly, the pixel switch SW includes a source electrode and a drain electrode which is formed together with the anode on an interlayer insulating film so as to reflect the light laterally emitted from the self light-emitting layer. It is another object of the invention to provide electrochemically active materials produced by said methods. The DME identifies a proper handler routine for each file in the list of files and sends each file to the proper handler routine. Rotation of the rotatable fastening assembly imparts a compressive force on the resilient member, and the resilient member yields when the compressive force exceeds the spring bias of the resilient member.