Commenting allows you to leave messages without affecting the browser display. It also allows you to make code inactive. A comment in HTML starts with `<!--`, contains any number of lines of text, and ends with `-->`. For example, the comment `<!-- TODO: Remove h1 -->` contains the text `TODO: Remove h1`.
Add a comment above the `p` element with the text `TODO: Add link to cat photos`. \
</section>
## Tests
<sectionid='tests'>
```yml
tests:
- text: Your comment should start with `<!--`. You are missing one or more of the characters that define the start of a comment.
testString: assert( code.match(/<!--/) );
- text: Your comment should end with `-->`. You are missing one or more of the characters that define the end of a comment.
testString: assert( code.match(/-->/) );
- text: Your code should not have extra opening/closing comment characters. You have an extra `<!--` or `-->` displaying in the browser.