9 Optical instruments, namely optical and electronic data carriers featuring sound, images, data, graphics, information, text, or computer programs, all for use in, or relating to, electronic trading systems for use in the financial field; apparatus for recording, transmission or reproduction of sound or images; blank magnetic data carriers; blank recording discs; calculating machines in the nature of calculators; data processing equipment in the nature of central processing units for processing financial transactions, and computers; computer hardware; computer software for accessing, reviewing, interacting with and retrieving, processing and displaying audio, video, text, data, graphics and images via a computer or communications network; computer financial software for use in, or relating to, electronic trading systems for use in the financial field; computer software for accessing, reviewing, interacting with and retrieving, processing and displaying audio, video, text, data, graphics and images via a computer or communications network for use in connection with exchanges of environmental emission allowances; downloadable electronic publications, in the nature of electronic newsletters in the fields of business, finance and investing