What is the author's style in Picnic by William Inge?

An act is a major division in a drama. In Greek plays the sections of the drama were signified by the appearance of the chorus and were usually divided into five acts. This is the formula for most serious drama from the Greeks to the Romans and to Elizabethan playwrights like William Shakespeare. The five acts denote the structure of dramatic action. They are exposition, complication, climax, falling action, and catastrophe. The five act structure was followed until the nineteenth century when Henrik Ibsen combined some of the acts. Picnic is a three-act play.