”
<h1>delimits the highest-level heading,</h1>
<h2>the next level down (sub-section),</h2>
<h3>for a level below that, and so on to</h3>
<h6>.
Most visual browsers show headings as large bold text by default. Heading elements are not intended merely for creating large or bold text—in fact, they should not be used for explicitly styling text. Rather, they describe the document’s structure and organization. Some programs use them to generate outlines and tables of contents.”</h6>
