Trivial change - Change /foo to /var/www/html/private. This serves two purposes. I dislike the use of 'foo' in documentation. But also, it aleviates some of the confusion that people have between /foo as a URI and /foo as a directory path. Using /var/www/html/private makes this much less ambiguous.
httpd/httpd/trunk/docs/manual/mod/mod_authn_anon.html.en
httpd/httpd/trunk/docs/manual/mod/mod_authn_anon.xml