Transtextuality
Transtextuality was defined by Gérard Genette as the "textual transcendence of the text", that is "everything that brings it [the text] into relation (manifest or hidden) with other texts". Genette distinguished five types of transtextual relationships, namely: intertextuality, that is, "a relationship of copresence between two texts or among several texts: that is to say, eidetically and typically [...] the actual presence of one text within another".