User-agent: *
Disallow: 

# Disallow directory /cgi-bin/ 
User-agent: *
Disallow: /cgi-bin/ 

# Disallow directory /images/ 
User-agent: *
Disallow: /images/ 

# Disallow directory /pdf/
User-agent: *
Disallow: /pdf/

# Disallow directory /PDF/
User-agent: *
Disallow: /pdf2/