Opening existing overlays You can open and reuse an existing overlay. If the overlay is a single-page overlay created in Design 1.31 (an earlier version of the Overlay Editor), you must import the overlay instead of opening it. Prerequisites If you want the Overlay Editor to substitute unavailable fonts, you must specify how the substitution is to be handled before you open the overlay. To open an existing overlay Select File > Open and open the overlay. To import a single-page overlay Select File > Import > Page and open the overlay.