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ExpositionAlso called Revelatory Conversation. It is dialogue or backstory primarily intended to explain some point about which the characters know, but the fic reader, as an outside observer, doesn't. Mechanically, the fic author arranges events in the story so the character possessing the knowledge has to explain it to another character. In reality, the explanation is for the reader. One of the primary benefits of having non-canon characters in a story is that they provide opportunities for exposition. While valuable, too much exposition in a story slows the pacing.

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