What does \t mean in html?

Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The HTML element creates inline text which is presented using the user agent's default monospace font face. This element was created for the purpose of rendering text as it would be displayed on a fixed-width display such as a teletype, text-only screen, or line printer.

The terms non-proportional, monotype, and monospace are used interchangeably and have the same general meaning: they describe a typeface whose characters are all the same number of pixels wide.

This element is obsolete, however. You should use the more semantically helpful , , , or elements for inline text that needs to be presented in monospace type, or the

 tag for content that should be presented as a separate block.
Note: If none of the semantic elements are appropriate for your use case (for example, if you need to show some content in a
non-proportional font), you should consider using the  element, styling it as desired using CSS. The font-family property is a good place to start.
Attributes
This element only includes the global attributes
Examples
Basic example
This example uses  to show text entered into, and output by, a terminal application.
<p>
  Enter the following at the telnet command prompt: <code>set localechocode><br />

  The telnet client should display: <tt>Local Echo is ontt>
p>
Result
Overriding the default font
You can override the browser's default font—if the browser permits you to do so, which it isn't required to do—using CSS:



CSS
tt {
  font-family: "Lucida Console", "Menlo", "Monaco", "Courier", monospace;
}

HTML
<p>
  Enter the following at the telnet command prompt: <code>set localechocode><br />

  The telnet client should display: <tt>Local Echo is ontt>
p>
Result
Usage notes
The  element is, by default, rendered using the browser's default non-proportional font. You can override this using CSS by creating a rule using the tt selector, as seen in
the example Overriding the default font above.
Note: User-configured changes to the default monospace font setting may take precedence over your CSS.
Although this element wasn't officially deprecated in HTML 4.01, its use was discouraged in favor of the semantic elements and/or CSS. The  element is obsolete in HTML 5.
Specifications

Specification
HTML Standard 
# tt
Browser compatibility
BCD tables only load in the browser
See also
The
semantic , , , and  elements
The
 element for displaying preformatted text blocks