prologue

A prologue or prolog (from Ancient Greek πρόλογος prólogos, from πρό pró, "before" and λόγος lógos, "speech") is an opening to a story that establishes the context and gives background details, often some earlier story that ties into the main one, and other miscellaneous information. The Ancient Greek word πρόλογος includes the modern meaning of prologue, but was of wider significance, more like the meaning of preface. The importance, therefore, of the prologue in Greek drama was very great; it sometimes almost took the place of a romance, to which, or to an episode in which, the play itself succeeded.

==Latin== thumb|Artwork by Gustave Doré. thumb|right|180px|Title page of 1616 printing of Every Man in His Humour, a 1598 play by the English playwright [[Ben Jonson. The play belongs to the subgenre of the "humours comedy"]] On the Latin stage the prologue was often more elaborate than it was in Athens, and in the careful composition of the poems which Plautus prefixes to his plays we see what importance he gave to this portion of the entertainment; sometimes, as in the preface to the Rudens, Plautus rises to the height of his genius in his adroit and romantic prologues, usually placed in the mouths of persons who make no appearance in the play itself.