URL aliases (e.g., “about-us” instead of “node/9”) are automatically assigned by default, and are what appear in the URL of your individual pages (e.g., http://YOURSITE.berkeley.edu/about-us). If desired, they can be manually assigned when creating or editing a node, and site builders also have the option of administering aliases via the site builder dashboard.
When creating or editing a page, under "URL path settings" at the bottom of the page, "Generate automatic URL alias" will be automatically checked. This Drupal...