More hints that this is true.<p>This paper was presented at the Second History of Programming Languages conference, Cambridge, Mass., April, 1993.  That&#x27;s the same month that CERN decided to publicly release source for the very first web server and client.<p>There is no conceivable way that DMR would have both found out about the web and chosen to write in HTML at that point in history.<p>However at that point Dennis Richie had 20 years of experience with troff.  The only other reasonable choice at that point was TeX.  And the output looks nothing like what I would expect from TeX.  So it almost certainly was troff.