When I first started using Unix in school in the early 1980s, at least a third of the time was using nroff/troff, tbl and eqn. Maybe another 20% playing rogue

When I first started using Unix in school in the early 1980s, at least a third of the time was using nroff/troff, tbl and eqn. Maybe another 20% playing rogue. The rest was used to become a vi/ex advanced user, writing csh and awk scripts, and learning C. The article mentions the "t" in troff, but doesn't mention that "roff" was short for "run off". I forget what the "n" was for.