-save session cookies along with the permanent ones. This is useful on
-sites that require you to log in before you can access some pages.
-With this option, multiple Wget runs will be treated as a single
+save session cookies (normally only kept in memory) along with the
+permanent ones. Many sites track important information, such as
+whether the user has authenticated, using session cookies. Using this
+option option allows multiple Wget runs to be treated as a single