This template is used similarly to Template:Tl to show the name of a template with the pairs of open and close braces around it. But this variant makes the inner braces part of the link, whereas Template:Tl does not make the braces part of the link. This is to allow very short template names to be easier to click on. The "Tn" name is short for Template name.
Example with comparison
| This page uses content from Wikipedia. The original article was at Template:Tn/doc.|
The list of authors can be seen in the page history. The text of this Wikinfo article is available under the GNU Free Documentation License and the Creative Commons Attribution-Share Alike 3.0 license.