In general the Greeks made much more use of the cyma moulding, where a cavetto and ovolo were placed one above the other to produce a "S" shape; the cymatium using this was a standard part of the cornice in the classical Ionic order, and often used elsewhere. There are two forms, depending on which curve is uppermost: in the "cyma recta" the cavetto is on top, in the "cyma reversa" the ovolo. A cavetto alone was sometimes employed in the place of the cymatium of a cornice, as in the Doric order of the Theatre of Marcellus in Rome, one of the standard models for revived classical architecture from the Renaissance onwards. But small cavetto mouldings were normal at various places, including integrated ones, not distinguished as a distinct zone by lines or borders, at the bottom of the shaft of columns, beginning the transition to the wider base. These are called an apophyge, or "concave sweep".