Here is a basic example of a
sitemap.xml file structure:
```xml
<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap-image/1.1">
<url>
<loc>http://www.example.com/</loc>
<lastmod>2023-10-01</lastmod>
<changefreq>daily</changefreq>
<priority>1.0</priority>
</url>
<url>
<loc>http://www.example.com/about</loc>
<lastmod>2023-09-15</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
<url>
<loc>http://www.example.com/contact</loc>
<lastmod>2023-09-20</lastmod>
<changefreq>yearly</changefreq>
<priority>0.5</priority>
</url>
</urlset>
```
Explanation of the elements:
- urlset: The root element that contains all url entries.
- url: Represents a single URL entry.
- loc: The location (URL) of the page.
- lastmod: The date when the page was last modified.
- changefreq: How frequently the page is likely to change (e.g., daily, weekly, monthly).
- priority: The priority of the page relative to other pages on the site (0.0 to 1.0).
This structure helps search engines understand the pages on your site and their importance.