different filetypes present on BBS storage media. It was capable of transmitting data like images, audio files, and audio clips between users linked to the same BBS or off-line if the BBS was in the circuit of the FidoNet organization.

Other efforts extended the original terminal concept, with the GUI being described in the information on the host. "Instant Graphics and Sound" for the Atari ST, for example, was a plain-text graphics language introduced in 1988 which encoded information for drawing vector art, playing sound effects, and