hephaestus(1) on Linux
The text e2015f4a8007, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 10 (Buster), Debian 9 (Stretch), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it. The page shows this text now.
a periodic table for the spectroscopist