Pls help me in HTML code

Question

I can't understand the the coding of comment??https://www.sololearn.com/learn/HTML/1027/

Answer 1

Where is your code and what is you doubt Sai Naga Vignesh Bandham ?

If you have doubt in your code pls paste it here :)

Answer 2

Sai Naga Vignesh Bandham
1.suppose you are new to coding and if you want to remember what a certain tag does you use comment.
2.Comment has no effect on your code ,its just for your reference.
Ex-
<h1>heading</h1> <!-- h1 is used for heading-->
Here h1 tag creates heading but i created a comment to remember what h1 is used for.