Therein is an assemblage of elements that hopefully form something of a cohesive picture within the context of a short narrative, a picture to be understood, and barring understanding, at least to be felt or in some way enjoyed by the reader.
A slice of life. An episode. Often a joke, with the punchline forming the last paragraph, as the author leaves us to laugh or smile. The last line can then have a punch, acting as the cognitive punctuation, or natural edge of the proverbial cliff or the top of the mountain, unlike pieces of music trailing into nothing, but this being more like a car crash, in which there is a abrupt stop, which itself conjures its own effect, the proceeding nothingness.
We also see stories with sandboxed vernacular can then point a story to a certain audience of experts or at best, to laymen, give a window into a specialized world through terminology to explore little crisis(es) and concerns, that this will illuminate and transport a reader into another world.