What is the decorative symbol called at beginning or end of a paragraph?

The decorative symbol at the beginning or end of a paragraph is called a pilcrow, paragraph mark, or section mark. It is represented by the symbol ¶.

While it is used less frequently in modern writing, it was commonly used in the past to mark the beginning of a new paragraph. It can still be found in some types of documents, particularly those that adhere to older styles or formatting conventions.