Skypix is a markup language used to encode graphics content such as changeable fonts, mouse-controlled actions, animations and sound to bulletin board systems.
The graphics were normally created using Skypaint, which could generate Skypix files directly from a familiar-looking paint program.
The files could be placed in the system and any Skypix-enabled terminal program would notice the encoding and recreate the graphics.
The underlying BBS software could be programmed in the ARexx language (a variant of REXX for the Amiga).
Skypix was available only on the Amiga computer, hosted on the Skyline BBS and accessed using the Skyterm terminal emulator.