export declare const SystemKeys: {
    BACKSPACE: string;
    TAB: string;
    ENTER: string;
    SHIFT: string;
    ESCAPE: string;
    SPACE: string;
    LEFT: string;
    RIGHT: string;
    UP: string;
    DOWN: string;
    DELETE: string;
    HOME: string;
    END: string;
    PAGE_UP: string;
    PAGE_DOWN: string;
};