Which semantic tag is used to identify a section of the page that links to other pages or to parts within the page?

The semantic tag used to identify a section of the page that links to other pages or to parts within the page is the <nav> tag. This tag is known as the navigation element in HTML5 and is used to group together the navigation links or a set of related links.

Explanation of the <nav> Tag:

1. Purpose: The primary purpose of the <nav> tag is to enhance the semantic meaning of HTML documents. It signifies that the enclosed links are part of the site's navigation system.

2. Accessibility: Using the <nav> tag improves accessibility for users who rely on screen readers. It allows assistive technologies to identify navigation links more easily.

3. SEO Benefits: Search engines can utilize the structure provided by the <nav> tag to better understand the layout and content hierarchy of the website.

4. Usage: The <nav> element can contain a variety of link types, including hyperlinks (<a> tags) that lead to other sections of the same page or different pages entirely.

5. Example:

   <nav>
       <ul>
           <li><a href="#home">Home</a></li>
           <li><a href="#about">About</a></li>
           <li><a href="#services">Services</a></li>
           <li><a href="#contact">Contact</a></li>
       </ul>
   </nav>
   

In summary, the <nav> tag is essential for defining navigation within a web page, contributing to both functionality and accessibility.