Besides that, we've got the contents broken down by medium (text or nontext, mainly, but some wiggle-room in the categories of mixed media and hypermedia). We've further broken down the types of text along the lines of a false dichotomy: made-up stuff versus true stuff. It's all true on some level and it's all made up, so we've allowed a third category, neither made-up nor true (that we didn't use in this episode), and a safe one, all text together.
Of course, pictures can be true or made-up or neither or both, as can comics, and maybe even sounds -- we're just trying to give you as many different handles as possible.