ZOhU (http://www.lojban.org/en/publications/reference_grammar/chapter16.html, http://www.lojban.org/en/publications/reference_grammar/chapter19.html)

Separates a logical prenex from a bridi or group of sentences to which it applies.
Also separates a topic from a comment in topic/comment sentences.

su'o da poi remna ro da poi finpe zo'u da prami de For-at-least-one X which
is-a-man, for-all Ys which are-fish : X loves Y There is a man who loves all fish.
