Template:Wikipedia

 has more about this subject: 

This template displays the box on the right, providing a link to an article on the.

Usage

 * is the name of the article on Wikipedia (optional)
 * is the text you want the link to say (optional)

If you don't specify an, it will link to the name of the page you use this template on. In the example above, the link is , since this page's name is Template:Wikipedia.