Software programs are available for creating craquelure in digital photos. Craquelure formed during gesso drying are particularly noticeable. This pattern of small cracks is known as craquelure. Methods that utilize craquelure as a means of detecting art forgery have been proposed. Recently, analysis of craquelure has been proposed as a way to authenticate art. Craquelure (fine cracking to the surface) had been painted over, especially in the background. Craquelure is frequently induced by using zinc white paints as the underlayer in pentimento techniques.