Hypertext Transfer Protocol -- HTTP/1.1
http://www.ietf.org/rfc/rfc2616.txt
Content-Disposition Header Field
http://www.ietf.org/rfc/rfc2183.txt
MIME Media Types
http://www.iana.org/assignments/media-types/
MIME Headers
http://msdn.microsoft.com/library/en-us/cdosys/html/_cdosys_mime_headers.asp
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