User-agent: * 
Disallow: /rd/
Disallow: /pdf/
Disallow: /ppt/
Disallow: /images/
Disallow: /se/courses/
Disallow: /security/courses/
Disallow: /privacy/courses/
Disallow: /memory_systems/courses/
Disallow: /business_models/courses/
Disallow: /open_source/courses/

User-agent: asterias
Disallow: /

User-Agent: Googlebot-Image
Disallow: /

User-agent: ia_archiver
Disallow: /