User-agent: * 
Allow: /
Disallow: /administrator
Disallow: /cache
Disallow: /components
Disallow: /editor
Disallow: /help
Disallow: /images
Disallow: /includes
Disallow: /language
Disallow: /mambots
Disallow: /media
Disallow: /modules
Disallow: /templates
Disallow: /installation