What are some of the literary/figurative devices used in "The Open Window"?

Additionally, most of the narrative, the framed story, is in the form of a tall-tale.  That is, it is a fabricated narrative that describes people and events in an exaggerated form.  Vera uses the husband of Mrs. Stappleton and her brothers, who are real, but creates a fantastical story around them.  She exaggerates the importance of the open window by making it the passage to a tale of tragic loss.

Another literary device employed is connotation.  The use of the open window with which to frame the tall-tale deludes the listener, Framton Nuttel, into believing the story because the openness of the window itself connotes lack of deception and candor.  Of course, Vera's name also connotes honesty and candor as it is a derivative of the Latin word for truth, veritas.