User-agent: *
Allow: /external.php?type=RSS2/
Allow: /directory/
Allow: /

User-agent: Googlebot-Image
Allow: /directory/images/
Allow: /external.php?type=RSS2/
Allow: /directory/
Allow: /

User-agent: Googlebot-Mobile
Allow: /directory/
Allow: /external.php?type=RSS2/
Allow: /