I used awk and eqn and t/roff to make a university phone book in the late 80s and early 90s. I was set the task of mimicing the hand-set phototypsetter version

I used awk and eqn and t/roff to make a university phone book in the late 80s and early 90s. I was set the task of mimicing the hand-set phototypsetter version from a printout listing. I needed EQN to make giant ellipsis across groups of names who shared a phone, and had to tune macros to use to get n column output to work with the gutter needs of the new bitstream bromide making machine.