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

Dramas are divided into different acts. In Greek plays the drama was usually divided into five acts. This is the formula for most serious drama from the Greeks to the Romans and to later playwrights like William Shakespeare. The five acts denote the structure of dramatic action: exposition, complication, climax, falling action, and catastrophe. This five-act structure was standard until the nineteenth century, when Ibsen combined some of the acts.