Digging thru some old discs here, I ran across this - "Disc.SDM.
When run it loads in a CLI for SDM files. There are three on the disc - one doesn't work, one plots positions on the Globe and the other appears to generate a pixelated design on what looks like a larger than standard (17k) screen. I have no idea what this program was used for, a bit of a puzzle.
Any ideas?
Cheers,
Peter