Analysis of information sources in references of the Wikipedia article "Ogee" in English language version.
ogee. Combination of a concave and convex line, two recurve shapes, producing a serpentine shape, either as a moulding (an S form in cross section) or as an elaborated pointed arch. It is particularly characteristic of the Venetian Gothic Revival, Gothick and Gothic Revival styles, although ogee forms appeared in textiles from the 12th century. In the 18th century the word was sometimes written as o-g. A nodding ogee is an arch in which the head projects. See also syma recta/reversa; keel moulding. [p. 218] / ovolo. Convex moulding (usually a quarter of a circle in section)... [p. 222] / cavetto moulding or hollow chamfering (Latin, cavare, to hollow). One of the principal forms of moulding, a concave version of the ovolo moulding, usually a quarter of a circle in section. [p. 73] / cyma recta (Latin, cyma, wave). Important compound moulding, combining the ovolo and cavetto with the convex moulding below. In section the moulding is a double curve, concave above, convex below. Also known as ogee moulding. cyma reversa... [presenting concave below, convex above, p. 97]
{{cite book}}: CS1 maint: multiple names: authors list (link)Cyma recta…which is hollow in the upper part, and round in the lower; and Cyma reversa, (Talon…) which is hollow in the lower part and round in the upper.