First seen in textiles in the 12th century, the use of ogee elements—in particular, in the design of arches—has been said to characterise various Gothic and Gothic Revival architectural styles.[1]:218 The shape has many such uses in architecture from those periods to the present day, including in the ogee arch in these architectural styles,[1]:218 where two ogees oriented as mirror images compose the sides of the arch,[3] and in decorative molding designs, where single ogees are common profiles (see opening image).[1] The term is also used in marine construction.[citation needed] The word was sometimes abbreviated as o-g as early as the 18th century,[1]:218 and in millwork trades associated with building construction, ogee is still sometimes written similarly (e.g., as O.G.).[citation needed]