What does <link> tag do besides including stylesheets?

Question

I know that the HTML tag is used for attatching stylesheets, but looking at the W3CSchools tag reference, it has many other values for the rel attribute. I\'ve looked

Answer 1

The tag conveys relationship information. For stylesheets, that means "here are instructions on how to display this file", but links are used for semantic references of many kinds, including others not listed in the HTML spec.