In the minute investigation of old oil canvases, modern art restorers use a technique called rigatino to fill in where flecks of paint are damaged or missing. These fine hatch marks, made with thin paint, signal to later scholars and restorers what constitutes the restorer's work while fully maintaining the distinctiveness and integrity of the original artist's brush strokes. In other words, restorers have devised a straightforward method to indicate the exact positions of evidentiary lacunae and to mark the impositions of their own hand amidst the work of old masters. Unlike the superscripts of footnotes amidst a printed text, rigatino blends with the original picture, though upon close investigation it is always distinct.