These classic symbols are used across several fields, for example the logical NOT symbol (¬) is used primarily in mathematics and computer science. The pilcrow (¶), also known as the paragraph mark, is commonly seen in proofreading and formatting and is also used in word processors to show paragraph breaks and formatting marks.

Another example is the section sign (§), which is often used in legal documents, academic writing, and references to indicate a particular section of a document, statute, or code. These classic symbols are essential tools for professionals in multiple fields, helping to structure text, clarify meaning, and convey specialized information.