Headings highlight information and improve readability.
Any documents readability can be improved with the usage of headings. The headings and sub headings of any documents helps in the representation of important concepts and also the ideas that are supporting those main concept. They help in enhancing the importance of the document through the proper visual representation.
The differences that we use in the text of the documents helps the readers in distinguishing the main concepts and ideas from the rest of the text in the documents. Thus, headings will be appearing in a little bigger size and helps in highlighting information and improving readability.