The `<section>` tag in HTML is a semantic element whose primary purpose is to logically segment the document structure within web pages or applications. Using the `<section>` tag allows you to divide the document into distinct sections, which should be organized around a common theme or related content. For example, if we are designing a website about technology news, it may contain multiple sections such as technology news, product reviews, and user comments. Each of these content blocks can be wrapped with the `<section>` tag, which not only helps organize page content but also assists search engines in better understanding the page structure, thereby enhancing SEO (Search Engine Optimization). Additionally, using the `<section>` tag can improve page accessibility, enabling screen readers and other assistive technologies to accurately interpret the page structure. Here is a simple example demonstrating how to use the `<section>` tag:

```html
<body>
    <header>
        <h1>Technology News Website</h1>
    </header>
    <section>
        <h2>Technology News</h2>
        <article>
            <h3>New Smartphone Release</h3>
            <p>Today, a tech company released their latest smartphone...</p>
        </article>
        <article>
            <h3>New Applications of AI</h3>
            <p>At the recent tech conference, multiple companies showcased new applications of AI in various fields...</p>
        </article>
    </section>
    <section>
        <h2>Product Reviews</h2>
        <article>
            <h3>Smartwatch Review</h3>
            <p>We conducted in-depth testing and evaluation of the latest smartwatches on the market...</p>
        </article>
    </section>
    <footer>
        <p>&copy; 2021 Technology News Website</p>
    </footer>
</body>
``` 

In this example, we define two `<section>` tags, each wrapping content about 'Technology News' and 'Product Reviews'. This structured approach helps define clear page content hierarchy and makes content management more flexible and straightforward.

What is the purpose of the section tag in HTML?

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