HTML headings are used to create headings and subheadings in a web page. They are represented by the <h1> through <h6> tags, with <h1> being the highest-level heading and <h6> being the lowest-level heading.

Headings are used to create a clear and consistent structure for a web page, making it easier for users to navigate and understand the content. They also help search engines understand the content of a web page, which can improve the page's visibility in search results.

The <h1> tag is used to create the main heading of a web page, and it should be used sparingly, typically only once per page. The <h2> through <h6> tags are used to create subheadings, and they can be used multiple times per page.

Here is an example of how headings can be used in a web page:

<h1>This is the main heading</h1>

<h2>This is a subheading</h2>

<p>This is some content under the subheading.</p>

<h2>This is another subheading</h2>

<p>This is more content under the second subheading.</p>

Output:

This is the main heading

This is a subheading

This is some content under the subheading.

This is another subheading

This is more content under the second subheading.

It's important to use headings correctly and consistently to ensure that the structure of a web page is clear and easy to understand. Additionally, it's recommended to use headings in a hierarchical order, starting with <h1> and following with <h2> and so on.

Stay tuned.