gtkdialog(1) on Linux
The text 70519a221f1d, as Debian 4.0 (Etch) shipped it.
GUI-creation command-line utility based on GTK+ library
Flags it lists
-
--debug -
--help -
--program -
--stdin -
--version -
-d -
-f -
-h -
-i -
-p -
-s -
-v