media type
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This memo defines extensions to the RFC 2045draft media type and RFC 2183prop
disposition parameter value ...
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In particular, existing MIME mechanisms provide for named media type
(content-type field) parameters as well as named disposition
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... content-type field) parameters as well as named disposition
(content-disposition field). A MIME media type may specify any
number of parameters associated with all of its subtypes, and any
specific subtype may specify additional parameters for its own use. A
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... the mechanism MUST NOT change the syntax of MIME media
type and disposition lines, and
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... Freed, N. and Borenstein, N., "Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types", RFC 2046draft, Innosoft, First Virtual Holdings, December 1996. ...