CEFR C2; focus: rhetorical anaphora, especially repetition at the beginning of successive clauses or sentences, contrasted with related but distinct forms of repetition and reference.

CEFR C1; focus: converting finite clauses into noun phrases or gerund-based noun phrases after linking expressions.

C2 ESL multiple-choice gap-fill exercise on frame markers: expressions that organise discourse by opening, shifting, limiting, returning to, or closing a frame of discussion.