The Metafiction reference article from the English Wikipedia on 24-Apr-2004
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Metafiction

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Metafiction is a kind of fiction that self-consciously addresses the devices of fiction. It can be compared to presentational theatre in a sense--presentational theatre does not let the audience forget they are viewing a play, and metafiction does not let the readers forget they are reading a work of fiction. Metafiction is primarily associated with postmodern literature.

Some common metafictive devices:

Some examples of metafiction: