well this was 1989 ..... as I said prior to this state of the are was fast vectors for CAD, and before any of that we didn't have many per-pixel framebuffers (m

well this was 1989 ..... as I said prior to this state of the are was fast vectors for CAD, and before any of that we didn't have many per-pixel framebuffers (memory was so expensive so you got stuff like CGA/etc or plain ttys)