In film, the meaning of "mise en abyme" is similar to the artistic definition, but also includes the idea of a "dream within a dream". For example, a character awakens from a dream and later discovers that they are still dreaming. Activities similar to dreaming, such as unconsciousness and virtual reality, also are described as "mise en abyme". This is seen in the film "eXistenZ" where the two protagonists never truly know whether or not they are out of the game. It also becomes a prominent element of Charlie Kaufman's "Synecdoche, New York" (2008). A more recent instance can be found in the film "Inception" (2010). Classic filmic examples include the snow globe in "Citizen Kane" (1941) which provides a clue to the film's core mystery, and the discussion of Edgar Allan Poe's written works (particularly "The Purloined Letter") in the Jean-Luc Godard film "Band of Outsiders" (1964).