'Paragraph' originally meant the marginal mark indicating a break — then shifted to the text section itself.
A distinct section of a piece of writing, usually beginning on a new line and dealing with a single theme or idea.
From Middle French 'paragraphe,' from Medieval Latin 'paragraphus' (sign marking a new section of text), from Greek 'paragraphos' (a line or stroke drawn beside text to mark a break), from 'para-' (beside) + 'graphein' (to write). Originally, a 'paragraphos' was not a block of text but a short horizontal stroke drawn in the margin to signal a change of topic. The word shifted from meaning the mark to meaning the section of text the mark indicated
In ancient Greek manuscripts, the paragraphos was a horizontal line drawn under the beginning of the line where a new topic started. It was not an indentation or a line break — those conventions developed much later. The pilcrow symbol (the backwards 'P': ¶) descended from medieval scribes' abbreviation of 'paragraphus' and survives today as a formatting