references a registered keyboard action, so the "Shortcut Hints" pane shows the user's current
(rebindable) binding formatted for their platform; or
lists literal keys for widget-local shortcuts that aren't in the global action registry (e.g.
the image viewer's zoom + / - / 0).
labelKey is an i18n key describing what the shortcut does. It is optional for the action
variant (the pane falls back to the action's friendly name) and required for the keys variant.
A single contextual shortcut hint. Either:
+/-/0).labelKeyis an i18n key describing what the shortcut does. It is optional for theactionvariant (the pane falls back to the action's friendly name) and required for thekeysvariant.