export type PresentationBlankScreen = 'off' | 'black' | 'white';
/** WPS/PowerPoint slideshow blank-screen shortcuts (B/. black, W/, white). */
export declare function nextPresentationBlankScreen(current: PresentationBlankScreen, key: string): PresentationBlankScreen | null;
export declare function presentationBlankScreenLabel(mode: Exclude<PresentationBlankScreen, 'off'>): string;