The HTML <comment> tag allows authors to comment their HTML code.
It is recommended to use <!--....--> to comment your tags. This tag is compatible with all browsers.
Note − The <comment> tag deprecated in HTML5. Do not use it.
Example
<!DOCTYPE html> <html> <head> <title>HTML <!--....--> Tag</title> </head> <body> <comment>This is a commented line in IE</comment> <!-- This is a commented line supported by almost every browser. It will not appear in output as its a comment. --> </body> </html>