> The use of phototypesetting grew rapidly in the 1960s when software was developed to convert marked up copy, usually typed on paper tape, to the codes that co

> The use of phototypesetting grew rapidly in the 1960s when software was developed to convert marked up copy, usually typed on paper tape, to the codes that controlled the phototypesetters. https://en.m.wikipedia.org/wiki/Phototypesetting https://en.m.wikipedia.org/wiki/Phototypesetting