Comment tags it is <!-- and --> used to insert comments in HTML.
HTML Comment Tags
you can comments to your HTML source by using the following syntax:
Comments are generally not displayed by the browser,it help document your HTML.
With comments you can place notifications and reminders in your HTML Web Page
<p>This is a paragraph.</p>
<!-- Remember to add more information here -->
Comments are also great for debugging HTML, because you can comment out HTML lines of code, one at a time, to search for errors:
<img border="0" src="pic_mountain.jpg" alt="Mountain">
You might stumble upon conditional comments in HTML:
.... some HTML here ....
Conditional comments defines HTML tags to be executed by Internet Explorer only.
Software Program Tags
HTML comment tags are generated various software programs such as Firefox,chrome
For example <!--webbot bot--> tags wrapped inside HTML comments by FrontPage and Expression Web.
As a rule, let these tags stay, to help support the software that created them.