The play, being thus opened, is carried forward in scenes and Acts; each scene being marked by the entrance of one character and the exit of another, as in the French drama. The dramatis personæ were divided into three classes—the inferior characters (nicha), who were said to speak Prákrit in a monotonous accentless tone of voice (anudáttoktyá); the middling (madhyama), and the superior (pradhána), who were said to speak Sanskrit with accent, emphasis, and expression (udáttoktyá). In general, the stage is never left vacant till the end of an Act, nor does any change of locality take place until then. The commencement of a new Act is often marked, like the commencement of the piece, by an introductory monologue or dialogue spoken by one or more of the dramatis personæ, and called Vishkambha or Prave[S']aka. In this scene allusion is frequently made to events supposed to have occurred in the interval of the Acts, and the audience is the better prepared to take up the thread of the story, which is then skilfully carried on to the concluding scene. The piece closes, as it began, with a prayer for national plenty and prosperity, addressed to the favourite deity, and spoken by one of the principal personages of the drama.