Such implicit imports in the text construct a metanarrative, a narrative of extradiegetic context we can call backstory.    From Wordnik.com.  [Archive 2009-06-01] Reference

Interdisciplinarity specifically draws our attention to the poverty of current legal analysis as applied to multimedia works; lawyers are very good at text and not very good at images or music, but fanworks increasingly incorporate multiple media: art and photomanipulation and video, extradiegetic music and snatches of dialogue and text, challenging law to use the insights of other disciplines to assess transformativeness, as Turk does.    From Wordnik.com.  [Archive 2009-04-01] Reference