HTML has six levels of headings (numbered 1 through 6), with 1 being the most prominent. Headings are displayed in larger and/or bolder fonts than the normal body text. The first heading in each document should be tagged <H1>. The heading tag is written:

<Hn>Text of heading</Hn>

where n is a number between 1 and 6 specifying the level of the heading. For example, a level three heading is:

<H3>Heading Level Three</H3>

In many documents, the first heading is identical to the title. For multi-part documents, such as a chapter of a book, the first heading should be suitable for a reader who is already browsing the other information (e.g., a chapter title), while the Title should identify a wider context (e.g., both the book title and the chapter title).

You would write a list of headings like this:

<H1>This is Heading 1</H1>

<H2>This is Heading 2</H2>

<H3>This is Heading 3</H3>

<H4>This is Heading 4</H4>

<H5>This is Heading 5</H5>

<H6>This is Heading 6</H6>

which would appear as:

This is Heading 1

This is Heading 2

This is Heading 3

This is Heading 4

This is Heading 5

This is Heading 6

Some points to note about headings: