How to use the <code> tag

What I mean is where does this tag imply exactly, and how it works? Yeah, I need a lil help, people!

You can look this up in reference sites like MDN or w3schools.

The HTML <code> element displays its contents styled in a fashion intended to indicate that the text is a short fragment of computer code. By default, the content text is displayed using the user agent’s default monospace font.