Apparatus for linking computers; apparatus for linking computers into networks; apparatus for use in communications between computers; articles adapted for use in the ducting of computer cables; articles adapted for use in the support of computer cables; audiovisual display apparatus adapted for use with computers; audiovisual display apparatus for use with computers; cabinets adapted to hold computers; component parts for computers; components for computers; computer apparatus for use in local area networks; computer cables; computer hardware; computer interface cards; computer networks; computer systems; computers; consoles for use with computers; devices for linking terminals on a computer apparatus; devices for use in the networking of computers; electric devices for transmission of data between computers; electric leads for use with computers; fibre optics communications apparatus for use with computer work stations; input devices for computers; interface boards for computers; interfaces (for computers); local area computer installations; information distribution programs