export declare const PDF_DISPLAY_DEFAULTS: {
    readonly VERTICAL_GUTTER_SIZE_PX: 20;
    readonly HORIZONTAL_GUTTER_SIZE_PX: 20;
    readonly PAGE_HEIGHT: 792;
    readonly PDF_WIDTH_PERCENTAGE: 56;
    readonly PDF_HEIGHT_PERCENTAGE: 94;
    readonly OBSERVER_THRESHOLD_PERCENTAGE: 0.4;
    readonly PDF_HEADER_SIZE_PX: 44;
    readonly PDF_SIDEBAR_SIZE_PX: 80;
};