I have the well-known sitemap.xml file generated through this website. I would like to extend this xml file with some more links that have not been noticed by the generator. The question is, is it possible?
If I extend the file and add more links from inside the site, will the final file be a legal and valid sitemap.xml recognized by search engines?
This is the chunk of code i would like to multiply:
<loc>[external links are visible to admins only]</loc>
Thanks in advance for your expert responses!