Conjunct

In linguistics, a conjunct is an adverbial that adds information to the sentence that not considered part of the propositional content (or at least not essential) but which connects the sentence with previous parts of the discourse. Rare though it is, conjuncts may also connect to following parts of the discourse. For example:

You may pick three items. However, should you prefer just two, you still have a 25% discount.

As I told you before, I didn't do it.

See also: adjunct disjunct adverbial