Paratextually

Some contend that an author revealing a character's sexuality paratextually does not make it canon.

Source: wiktionary

In fact, these two novels reflect each other almost paratextually in important ways: each concerns a young girl with aspirations to become a writer; indeed, each story is compounded of the diary entries written by the protagonist.

Source: wiktionary

In the case of translated literature, there may be considerable differences between how a book is paratextually presented in the source and target context, and it is the publisher who is the most important mediating agent of such changes.

Source: wiktionary

This article analyses the discursive choices made in two of Criterion's Kubrick discs (Paths of Glory and Dr. Strangelove) in order to determine how Kubrick's authorship is framed paratextually.

Source: wiktionary