¶
pilcrow sign = paragraph sign: ¶ oder ¶
http://www.w3.org/TR/html401/sgml/en....html#h-24.2.1
Also einfach "das Absatzzeichen".
The pilcrow was used in medieval times to mark a new train of thought, before the convention of using paragraphs was commonplace.
http://www.wikipedia.org/wiki/Pilcrow