on don quixote 1

One thing I keep noticing while reading don Quixote is that Cervantes continually steps out of the text to remind us that we're reading a book. He will often times mention another "historian" whose records Cervantes used to tell his story. He also will say that a specific story will be finished in the next chapter. I know in theaters it's called metatheatricality when the audience is reminded that they are watching a play, but I don't know if there is one for non theater literature. If there is, the term would definately apply to Don Quixote