C.4. Parameters

Any type may have "parameters". These are a set key/value pairs that provide more information about the type. They are useful primarily for MIME types that can be modified by additional paramaters: for example, text/plain may have language and charset parameters. The parameters are listed in parenthases. Each key/value pair is seperated from the next by a comma character. the key is seperated from the value by an equals sign character.

For example: