Entablature being called petrification. The structure of the entablature varies with the three classical orders: Doric, Ionic, and Corinthian. In each, the proportions of the subdivisions (architrave, frieze, cornice) are defined by the proportions of the column in the order. In Roman and Renaissance interpretations, it is usually approximately a quarter of the height of the column. Variants of entablature that do not fit these models are usually derived from them. Pure classical Doric entablature is simple. The architrave, the lowest band, is split, from bottom to top, into the guttae, the regulae, and the taenia. The frieze is dominated by
Ionic Greek city of Miletus. This alphabet eventually became the standard Greek alphabet, its use becoming uniform during the Koine era. It was also the alphabet used in the Christian Gospels and the book of Acts. Proto-Greek "ā" > Ionic "ē"; in Doric, Aeolic, "ā" remains; in Attic, "ā" after "e, i, r", but "ē" elsewhere. Proto-Greek "e, o" > Ionic "ei, ou": compensatory lengthening after loss of "w" in the sequences "enw-, erw-, onw-, orw-". In Attic, "e, o" is not lengthened. Ionic sometimes removes initial aspiration (Proto-Greek hV- > Ionic V-). Ionic contracts less often than Attic. Proto-Greek "*kʷ" before