RFC 4288:Media Type Specifications and Registratio...
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Subtype Name


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... Registration Trees and Subtype Names ...
... In order to increase the efficiency and flexibility of the registration process, different structures of subtype names may be registered to accommodate the different natural requirements for, ...
... For convenience and symmetry with this registration scheme, subtype names with "x." as the first facet may be used for the same purposes for which names starting in "x-" are used. These types are ...


... All registered media types MUST be assigned type and subtype names. The combination of these names serves to uniquely identify the media type, and the format of the subtype name ...
... subtype names. The combination of these names serves to uniquely identify the media type, and the format of the subtype name identifies the registration tree. Both type and subtype names are case-insensitive ...
... media type, and the format of the subtype name identifies the registration tree. Both type and subtype names are case-insensitive. ...
... case-insensitive. Type and subtype names beginning with "X-" are reserved for experimental use and MUST NOT be registered. This parallels the ...
... Type and subtype names MUST conform to the following ABNF: ...
... images that require appropriate hardware to display. The subtype names the specific image format. ...


... The intent of the public posting to this list is to solicit comments and feedback on the choice of type/subtype name, the unambiguity of the references with respect to versions and external profiling ...


... o All media types MUST have properly formed type and subtype names. All type names MUST be defined by a standards-track RFC. All ...
... All type names MUST be defined by a standards-track RFC. All type/subtype name pairs MUST be unique and MUST contain the proper tree prefix ...


... Type name: Subtype name: Required parameters: ...


... o Imposed a maximum length of 127 on all media type and subtype names. o A note has been added to caution against excessive use of ...
... o A note has been added to caution against excessive use of "+suffix" constructs in subtype names. o The encoding considerations ...



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