@techreport{palme-multipart-choices-00,
    number =    {draft-palme-multipart-choices-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-palme-multipart-choices/00/},
    author =    {Jacob Palme},
    title =     {{The multipart/choices Content-Type}},
    pagetotal = 0,
    year =      2001,
    month =     jan,
    day =       2,
    abstract =  {This memo specifies that the existing MIME content-type 'multipart/alternative' should be restricted to cases where the alternatives differ in their content-type. When the alternatives differ in other properties than content-type, a new 'multipart/choices' content-type is to be used instead. This is necessary, because the present specification gives extremely bad downgrading for mailers not supporting use of 'multipart/alternative' for other differences than content-type. This memo also specifies a mandatory parameter to multipart/choices. This mandatory parameter will hopefully avoid the same problem occuring again in the future.},
}