The immediate literary setting in which a text appears.
Context is the broad literary setting in which a given smaller text appears. It is sometimes distinguished from the co-text, a more specialist term for the immediate literary setting of a given text. In text and language analysis, "context" is especially associated with the concept of "pragmatics",
Pragmatics is sometimes characterized as dealing with the effects of context. This is equivalent to saying it deals with utterances, if one collectively refers to all the facts that can vary from utterance to utterance as ‘context.’
Questions with this tag will focus on the nature of the context of the specified text, and the constraints it places on the understanding of that text (especially if one does not view literary-genre, literary-structure, or literary-device as appropriate for the question).