Yes, a related issue came up when dmr rebelled when the lawyers made him rewrite a phrase when reprinting a paper in the BSTJ. For some reason, he didn't prefer the rewrite: "PDP-11 computer system UNIX system file system".

-rob

On Sun, Jul 11, 2021 at 6:12 AM Jon Steinhart <jon@fourwinds.com> wrote:

Nelson H. F. Beebe writes:
> Jon Steinhart writes
>
> > I use UNIX instead of Unix as that's what I believe is the correct form.
>
> Brian Kernighan addresses this issue in section 7.3 of his
> recent memoir: it has "UNIX A History and a Memoir" on the
> cover, but prefers "Unix" in the rest of that book, except
> in the noted section.  He also refers back to the 1984
> book with Rob Pike, "The UNIX Programming Environment",
> in which the typography uses small caps for "UNIX".

Yeah, small caps was what I always considered correct.