Like in most programming languages, HTML has something called comments that can write on an HTML document . These comments are special code because they are ignored by computers. You should use comments to explain bits of code so that the HTML program is readable to other human programmers.
Here is what an HTML comment looks like:
You can put anything inside of the<!--and the --> and it will be ignored by the computer. You can also make the comment be multiline such as:
<!-- This is a multi-line comment -->
(2.1) What Is HTML? / (2.2) Anatomy of an HTML Element
2.4 Basic Tags In a Webpage