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001225_weber@eitech.com _Tue Jun 1 19:39:15 1993.msg
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Date: Tue, 01 Jun 1993 10:58:22 -0800
To: Dave_Raggett <dsr@hplb.hpl.hp.com>
From: weber@eitech.com (Jay Weber)
Subject: Re: More than just HTML (was Re: Poetry and Maths)
Cc: www-talk@nxoc01.cern.ch
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At 03:05 PM 6/1/93 BST, Dave_Raggett wrote:
>>> The embedded data can
>>> be sent along with the main document using MIME's multipart capability.
>
>> How do you plan on doing this in HTML+? Sounds like the first part
>> will be text/html, where the anchors reference other parts. The reference
>> can be done by defining a URL access type of "part", e.g. HREF=part:XXX
>> where XXX is a Content-id.
>
>I think that the HREFs should use the standard URL for the document, and the
>MIME subheader for the image (or whatever) should include a field specifying
>the URL for the subpart, e.g.
>
> Source: http://info.cern.ch/hyptext/WWW/lep.jpg
Good idea, this is much better than a "part" access type.
>The current spec for the HTTP doesn't give a suitable field, although
>Message-id is a near miss (defined according to RFC 850).
Is it a near-miss because of special characters? I.e., the content-id
of a part uses the same syntax as a message-id, which must be
"<" local-part "@" domain ">"
The local-part is just a dot-separated series of words which must be
unique for that domain. So if the entire content-id is not suitable
as a field in an URL, we can just use the local-part; it will still
be straightforward for the server to resolve which MIME-part is being
addressed.
Jay Weber
EIT