mate-hud 22.10.3-1 (s390x binary) in ubuntu mantic

 A Heads-Up Display (HUD) allows you to search through an application's
 appmenu. So if you're trying to find that single filter in Gimp but
 can't remember which filter category it fits into or if you can't
 recall if preferences sits under File, Edit or Tools on your favourite
 browser, you can just search for it rather than hunting through the
 menus.