Links are one of the most important features of the web. The link can be either absolute or relative.
This link will take you to the index page for zebra0.com: index, the tag used here is <a href="/index.php">index</a> The slash means to go up to the top level.
Notice that the text for the link is between the <a href ="..."> part and the </a>. If you leave out the text part the viewer will not see the link.
This link will take you to the index page that is in the same directory or folder as this page: index, the tag used here is <a href="index.php">index</a>
Don't forget: You can always see the source code by right clicking on a webpage and selecting view source.
Links