Arthur Samuel wrote documentation for typesetting software still in use.

Evidence

Thanks to the various free and/or open-source software projects that made the writing of this book possible, in particular Git, TeX, and LaTeX. I marvel that this manuscript was written using typesetting software more than 40 years old, and for which none other than Arthur Samuel himself wrote the documentation. — Brian Christian, The Alignment Problem, 1455

Categorization

• XREF: Arthur Samuel appears centrally in the book’s early chapters on machine learning’s origins — nice echo that his legacy extends to the book’s own typesetting.
• corroborated: 2 independent passages support this claim — Brian Christian, The Alignment Problem, 1455