What is the meaning of Paragraph_break?

A place within written content representing a semantic departure where one paragraph ends and another begins; usually represented visually with at least a line break and often also with additional vertical spacing or a subsequent indent.

A place within written content where such an orthographic break occurs; in computing, it is encoded with a hard return, which is sometimes represented visually with a pilcrow character (¶).

Source: wiktionary.org