Adding Section Titles in HTML using Heading Tags Level One through Six

A book usually is divided into sections that are usually called chapters. Those chapters could also be part of greater subsection of the book. Usually there is a title text for each of those sections and subsections.

In HTML you can accomplish that with heading tags. The top-level section marker is heading level one. Then you can have subsections of sections using headings of a level higher than one. Those headings can go up to six. You can think of them like title that marks a subsection of a subsection of a subsection and so on.