nxdialog(1) on Linux
The text 7e78fa2a2e9f, as Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it.
NX Dialog Helper
Flags it lists
-
--allowmultiple -
--caption -
--class -
--dialog -
--display -
--help -
--local -
--message -
--parent -
--window -
-h