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A leader in this field is Sustainable Typesetting, a project of the design and typesetting company 2K/DENMARK.

Ng and her crew, many of them friends from UW, had to master the publishing business, along with the intricacies of a manual Chinese typesetting machine imported from Taiwan.

At war’s end, the family returned to Seattle, where neighbors had safeguarded typesetting equipment that allowed them to restart the family printing business.

She posted an 11-part thread — with technical passages composed with LaTeX, a scientific typesetting language — showing that this humble geometry puzzle is connected to more serious and formal mathematics.

Though feted at the Frankfurt Book Fair, its publication was hampered by typesetting challenges, accounting errors and legal frustrations.