xhk(1) on Linux
The text f239ed37b275, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it. The page shows this text now.
HalfKey Xorg Driver Utility
Flags it lists
-
-d -
-h -
-m -
-t -
-v