Sending a dividing line in a chat means changing another topic, which means changing your topic. The circle of friends sends a dividing line to separate different paragraphs or chapters in the article. It means that the last paragraph is finished, and it's time to start a new topic.

The dividing line is often used in the middle of an article to make it look more beautiful and convenient for everyone to read. Of course, it is sometimes used in the signature when posting.

There are picture dividing lines, symbol dividing lines, vertical and horizontal lines, and everything.