Re: Multipart/Alternate and TEXT/HTML in e-mail

I don't understand the complexity that comes from putting the
text/plain alternative inside the multipart/related instead of
outside.  I also don't get why the convolution with external-body
references. Why isn't this example just:

================================================================
1 Content-type: Multipart/Alternative
1.1   Content-Type: Text/plain
      Content-Description: plain text version for those who
        cannot read HTML
1.2   Content-type: Multipart/Related; type=text/html
1.2.1   Content-Type: Text/HTML
        Content-Description: HTML version of the same message,
          which may contain external file references

        <IMG SRC="cid:1.3@accurate.com">

1.2.2   Content-Type: Image/GIF
        Content-Description: the GIF picture
        Content-ID: <1(_dot_)3(_at_)accurate(_dot_)com>
================================================================
or, if you don't want to rewrite the URLs inside HTML, creating
a new type for transforming URLs:
================================================================
1 Content-type: Multipart/Alternative
1.1   Content-Type: Text/plain
      Content-Description: plain text version for those who
        cannot read HTML
1.2   Content-type: Multipart/Related; type=application/translate

1.2.1   Content-Type: application/translate; type=text/html
        Content-Description: new media type for translating things

        http://www.dsv.su.se/picture.GIF cid:1.3@accurate.com

1.2.2   Content-Type: Text/HTML
        Content-Description: HTML version of the same message,
          which may contain external file references

        <IMG SRC="http://www.dsv.su.se/picture.GIF";>

1.2.3   Content-Type: Image/GIF
        Content-Description: the GIF picture
        Content-ID: <1(_dot_)3(_at_)accurate(_dot_)com>
================================================================