Ionic order cap is usually enriched with egg-and-dart. Since Vitruvius, a female character has been ascribed to the Ionic (in contrast to the masculine Doric). The major features of the Ionic order are the volutes of its capital, which have been the subject of much theoretical and practical discourse, based on a brief and obscure passage in Vitruvius. The only tools required to design these features were a straight-edge, a right angle, string (to establish half-lengths) and a compass. Below the volutes, the Ionic column may have a wide collar or banding separating the capital from the fluted shaft (as in, for
Ionic order joists), with a corona ("crown") and cyma ("ogee") molding to support the projecting roof. Pictorial often narrative bas-relief frieze carving provides a characteristic feature of the Ionic order, in the area where the Doric order is articulated with triglyphs. Roman and Renaissance practice condensed the height of the entablature by reducing the proportions of the architrave, which made the frieze more prominent. The Ionic anta capital is the ionic version of the anta capital, the crowning portion of an anta, which is the front edge of a supporting wall in Greek temple architecture. The anta is generally crowned by a