A catalog for maintaining a store of public and private limited distribution release software changes in a single location. The electronic circuits are printed on the document in conductive or semiconductive ink using, for example, the gravure printing process, and the presence and status of the circuits can be used to verify or authenticate the document. At its pipe end facing away from the intake nipple, the fluid-carrying pipe is screw-fitted in the blind hole and the threaded connection is sealed with respect to the blind hole. Operations that are not compatible with the desktop applications are removed from a published list of operations. The present invention can be applied to an SDTI CP-ASI converter or a long GOP encoder. The sound processing engine applies the sound processing criteria to the first and second real channel inputs.