A field effect transistor with a dual-counterdoped channel is disclosed. To indicate that shooting, preparations and recording of the image to be recorded are in progress, the brightness of the displayed image is gradually changed. The summary synopsizes file information and characteristics such as height, width, length, color type, resolution, compression type used for storing and forming the file, annotation graphics of the file and the like. The weapon attaching portion is configured to attach to a weapon. Those structures more closely meeting the design goals and not similar to the preexisting structure are favored further until a structure is generated that either meets the prespecified design goal or some other process completion criteria. In preferred embodiments of the instant invention, the activatable deprotecting reagent is a photoacid generator and the protective groups are DMT for nucleic acids and tBOC for amino acids.