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> From: Peter Murray-Rust <Peter@u...> > > I am not wanting to re-open this discussion/decision, but I'd be very > grateful for clarification as to how a SytemID is used to identify the > type of a NOTATION. If I wish to identify it as 'image/gif', how do I > do this in practice? Peter asked me to on-post this. The standard way to stick a MIME type into a system identifier is given as part of HyTime '97. First we have a notation declaration (which is really only for documentation, so you don't need it if you don't want it). <!NOTATION mimetype PUBLIC "-//IETF/RFC1521//NOTATION FSISM PORTABLE MIME Content Type//EN"><!-- Refer RFC 1700 --> This notation declaration allows us to use "mimetype" in Formal System Identifiers, which are system identifiers with little pseudo-start tags giving the notation used in the rest of the string. So we can then declare the notation "gif" to be the mime type "image/gif" by <!NOTATION gif SYSTEM "<mimetype>Content-Type=image/gif"> A full form for this with both public and system identifiers would be <!NOTATION gif PUBLIC "ISBN 0-7923-91::Graphic Notation//NOTATION Compuserve Graphic Interchange Format//EN" "<mimetype>Content-Type=image/gif"> Presumably you could also stick other MIME parameters in also, after semicolons, e.g. <!notation multipart-mime PUBLIC "-//IETF/RFC1521//NOTATION MIME Content Type Multipart Mixed//EN" SYSTEM '<mimetype>Content-Type=multipart/mixed;boundary="--@QQQ@--"'> (There is also provision of a notation called simply "mime", which can be used for burrowing into a MIME file for specific parts. ) Rick Jelliffe xml-dev: A list for W3C XML Developers Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ To unsubscribe, send to majordomo@i... the following message; unsubscribe xml-dev List coordinator, Henry Rzepa (rzepa@i...)
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