<tt>
All Tags not showing in online page, but show on view source.
<p><tt>Teletype text</tt></p>
Code show like this:
This is your Teletype text
Browser Support
The <tt> tag is supported in all major browsers.
Attention: tt tag is not supported in HTML5. Use CSS instead of this.
What is tt tag
tt tag means teletype text. tr tag used to a row in an HTML table.
Differences Between HTML 4.01 and HTML5
tt tag is not supported in HTML5, but is supported in HTML 4.01.