In HTML comments (notes to yourself) are tucked inside a comment tag:

<!-- this is a comment inside a comment tag -->

It's good practice to start any code with a comment identifying the file, the file's purpose, author and copyright.

W3C, HTML's international standards organization, has another standard. If you want to learn more, try www.w3.org/TR/html4/sgml/dtd.html

pop_comment.html © 2007, Martin Rinehart