Computer hardware; computer firmware and computer software used for designing conservatories, conservatory roofs and glazed roofs; media used for storage and transmission of digital data in the form of pre-recorded tapes and discs relating to conservatory, conservatory roof and glazed roof design; computer programs for use in designing conservatories, conservatory roofs and glazed roofs; pre-recorded magnetic data carriers, recording discs, optical discs, laser discs, compact discs, magnetic ...