I still remember using troff to create typeset output on a C/A/T phototypesetter hooked up to a PDP/11 running Version 7 Unix in the early 1980s. This article h

I still remember using troff to create typeset output on a C/A/T phototypesetter hooked up to a PDP/11 running Version 7 Unix in the early 1980s. This article has a description of how that phototypesetter worked: https://www.spinellis.gr/blog/20131211/index.html https://www.spinellis.gr/blog/20131211/index.html