Re: Comments on MIME/SGML

Tim Berners-Lee <>
Date: Fri, 25 Feb 1994 12:02:13 --100
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From: Tim Berners-Lee <>
To: Multiple recipients of list <>
Subject: Re: Comments on MIME/SGML
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>    1. We make the following correspondence between the terms of the SGML
>    standard and the MIME RFC:

>        SGML SYSTEM identifier => MIME Content-ID

	I proposed in an earlier note that the SGML SYSTEM identifier
	should be a URI and that a special form of URI (cid:) should
	be used to specify a content identifier within a MIME
	multipart message.

	SGM SYSTEM identifier  => URI
	This allows SGML to reference anything in the universal
	syntax, inclusing now URLs and later URNs, and
	other parts of a MIME object using the cid: form.
	I think this is important, as external references
	are important too, and one will need to mix them.
	Tim BL