Here's what makes it unique:
* It comes after the main action is resolved. The epilogue is a separate, often short scene that occurs after the climax and resolution of the play.
* It often provides commentary or reflection on the events of the play. The epilogue might offer insights into the characters' futures, comment on the themes of the play, or even address the audience directly.
* It isn't always present. Not every play has an epilogue. It's a stylistic choice used by playwrights when they want to add a final touch or provide closure for the audience.