+----------------+ | Program #1 | | | | +------------+ | | | GDS Client |-_ | +------------+ |-_ +-------------------+ +----------------+ -_TCP | Emacs | -_ | | -_+------------+ | +---------------+ | _| GDS Server |-----| GDS Interface | | +----------------+ _- +------------+ | +---------------+ | | Program #2 | _- +-------------------+ | | _- TCP | +------------+ _- | | GDS Client |-| | +------------+ | +----------------+