hxunxmlns(1) on Linux
The text 90c726271b49, as Arch Linux 2026-11-01, Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch) shipped it. The page shows this text now.
replace XML "global names" by Namespace prefixes