Today I learned
- 2026-04-10: You can use
pdfbook2to generate a booklet. It defaults to long-edge, but you can use-sor--short-edge. Also, I the default paper format is letter, you can use--paper=a4paper. It is installed by default by texlive/mactex, but it is available also on GitHub. - 2025-10-23: Ball pits for kid were invented by/for Ikea source: Who First Invented the Ball Pit? Two Young Ikea Designers, in 1970