How to add a link in the right menu?

From ClarolineDoc

In Claroline 1.5, there is no specific tool to change the links in the right menu of the home page.

However, this is possible to modify the main index.php file at the root of your installation to specific links. At the line 670, just add the required HTML code :

<a href="mynewlink.html"> My new page </a>