Use accesskeys in the Primary Navigation

The primary navigation should include an assigned accesskey that corresponds to a keypad number key whenever possible:
<li><a href="news.html" accesskey="1">News</a></li>This code links the News item to the “1” key on the mobile keypad and displays the number 1 by it (if the <li> it is part of is the first in the list, of course). Obviously, navigation that exceeds the number of keys on the keypad makes it difficult to provide accesskeys for lists with more than ten items. While not a requirement for all links, accesskeys are useful for primary navigation.