Not new, just a reminder

Usually, a sentence consists of at least two parts. One part is old known information picked out from the previous context or presupposed by the common knowledge of the speaker and addressee. This would be the theme of the sentence. The other part consists of new, added or invoked information. This part would be the rheme of the sentence.—Galia Hatav, "The Infinitive Absolute and Topicalization of Events in Biblical Hebrew," in Advances in Biblical Hebrew Linguistics, ed. Adina Moshavi and Tania Notarius, LSAWS 12 (Winona Lake, IN: Eisenbrauns, 2017), 214

<idle musing<>
I know, that's not new information, but it's a helpful reminder (see what I did there?).
</idle musing>