A bit of XENIX history
From 1986 to 1989, I worked in the Xenix group at Microsoft. It was my first job out of school, and I was the most junior person on the team. I was hopelessly naive, inexperienced, generally clueless, and borderline incompetent, but my coworkers were kind, supportive and enormously forgiving - just a lovely bunch of folks.
Microsoft decided to exit the Xenix business in 1989, but before the group was dispersed to the winds, we held a wake. Many of the old hands at MS had worked on Xenix at some point, so the party was filled with much of the senior development staff from across the company. There was cake, beer, and nostalgia; stories were told, most of which I can't repeat. Some of the longer-serving folks dug through their files to find particularly amusing Xenix-related documents, and they were copied and distributed to the attendees.
These are kinds of stories that need to be written down for posterity, of we risk losing a lot of valuable information and backstories to some of the less successful technology products of our time.