/**
 * The axis vertical text is centred on, measured once per font family and
 * stored on each vertical page (`VDTFlowFrame.centralBaselines`), so every
 * renderer turns an upright character about the same point; and the
 * advance of each dash the flow stretches to its cell
 * (`VDTFlowFrame.dashAdvances`), for the renderers that have no font
 * metrics of their own.
 */
import { type VDTDocument } from '../vdt.js';
/** Measure and store the central baseline of every family set in the flow
 *  of each vertical page, and the advance of the dashes it stretches; and
 *  the same, on the frame, for each vertical frame of a composed page set
 *  in a mode of its own (#944). Horizontal pages are otherwise left alone. */
export declare function stampCentralBaselines(doc: VDTDocument): void;
//# sourceMappingURL=verticalMetrics.d.ts.map