Problem: Your web site uses the Typo3 CMS. Your typoscript templates contains TMENU objects for navigation menus. You want to use the page alias somewhere in the A tags of these TMENU menus. For example, you want to set the id of a menu item's A tag to the alias field of the page that the menu item stands for.
<a id="widgets" href="...">Buy Widgets</a>
Buy Widgets is the title of the page and widgets is its alias.