That is amazing! Are you the author of the software? Amazing scan, and the comment is fascinating: "Editor's note: the figures accompanying this article are screen dumps from a monochrome display".
There is an entire Byte magazine archive, which will either blow your nostalgic mind, bring a smile or just make you ponder ─ how much/what has really changed?
Just for fun I dug up the old PrtScFX source code and posted it for any interested historians: