Now I am really surprised. I knew that Xenix was a Unix that belonged to Microsoft, but I didn't know Word worked on a Unix. And I didn't know that Xenix was bo

Now I am really surprised. I knew that Xenix was a Unix that belonged to Microsoft, but I didn't know Word worked on a Unix. And I didn't know that Xenix was bought by SCO later. Looked up wikipedia on Xenix [0], and there are a lot of interesting facts in there, that for me put some aspects of the PC and Unix history in new lights. For example: "Microsoft hopes that XENIX will become the preferred choice for software production and exchange", the company stated in 1981.[8] Microsoft referred to its own MS-DOS as its "single-user, single-tasking operating system",[31] and advised customers that wanted multiuser or multitasking support to buy XENIX.[31][32] It planned to over time improve MS-DOS so it would be almost indistinguishable from single-user XENIX, or XEDOS, which would also run on the 68000, Z8000, and LSI-11; they would be upwardly compatible with XENIX, which BYTE in 1983 described as "the multi-user MS-DOS of the future".[33][34] Microsoft's Chris Larson described MS-DOS 2.0's XENIX compatibility as "the second most important feature".[35] His company advertised DOS and XENIX together, listing the shared features of its "single-user OS" and "the multi-user, multi-tasking, UNIX-derived operating system", and promising easy porting between them. AT&T started selling System V,[37] however, after the breakup of the Bell System. Microsoft, believing that it could not compete with UNIX's developer, decided to abandon XENIX. The decision was not immediately transparent, which led to the term vaporware.[38] It agreed with IBM to develop OS/2,[4] and the XENIX team (together with the best MS-DOS developers)[citation needed] was assigned to that project. In 1987, Microsoft transferred ownership of XENIX to SCO in an agreement that left Microsoft owning slightly less than 20% of SCO (this amount prevented both companies from having to disclose the exact amount in the event of a SCO IPO). When Microsoft eventually lost interest[clarification needed] in OS/2 as well, the company based its further high-end strategy on Windows NT." [0] https://en.wikipedia.org/wiki/Xenix https://en.wikipedia.org/wiki/Xenix