API Reference > appui-react > Backstage > BackstageItemProps > tooltipKey tooltipKey tooltipKey: undefined | string if set, it is used to define a key that is used to look up a localized string. This value is used only if label is not explicitly set. Defined in ui/appui-react/src/appui-react/backstage/BackstageItemProps.tsx Line 37 Last Updated: 20 June, 2023