What are non visual elements of a webpage?

Question

I just started learning HTML and came across a term NON VISUAL ELEMENTS i seriously don't have any ideas on what it is. Is there anyone who can help me with it?

Answer 1

That is the part of your code what is not seen on the web site. For example the <meta> tags, which are used to describe the content of the page. That is important for search engines like google.

Answer 2

comments are non visual elements