Pilcrow

[2] In the Middle Ages, the practice of rubrication (type in red-ink) used a red pilcrow to indicate the beginning of a different train of thought within the author's narrative without paragraphs.

[3] The typographic character of the pilcrow usually is drawn like a lowercase letter-q, reaching from the descender to the ascender height; the bowl (loop) can be filled or empty.

[4] The first way to divide sentences into groups in Ancient Greek was the original παράγραφος [parágraphos], which was a horizontal line in the margin to the left of the main text.

With the introduction of the printing press from the late medieval period on, space before paragraphs was still left for rubricators to complete by hand.

In China, the 〇, which has been used as a zero character since the 12th century, has been used to mark paragraphs in older Western-made books such as the Chinese Union Version of the Bible.