gtk3-nocsd(1) on Linux
The text 94b310da4699, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch) shipped it. The page shows this text now.
transparently disable Gtk+3 client side decorations (CSD)