Hi folks,
First, note that this XHMTL MIME type registration I-D is
an official submission of the W3C HTML WG (not the individual
contribution that the document filename implies).
This XHTML MIME type supports future XHTML-family languages
(e.g., XHTML-Print) explicitly with the OTPIONAL parameter
'schema-location=' which specifies the URL of a DTD of XML
Schema for the specific XHTML language dialect.
This means that XHTML-Print does NOT need any special MIME
type to be declared in an open and interoperable way in all
protocols that carry MIME messages (email, IPP, etc.).
The example in this I-D:
schema-location=http://www.w3.org/TR/xhtml-basic/xhtml-basic10.dtd
UPnP and IPPFAX folks please take note:
A key constraint in this XHTML MIME type is that documents
that use this label MUST be 'well-formed' XML (see the W3C
XML 1.0 spec - this has more than the obvious meaning).
So XML 'fragments' (that are not well-formed) are specifically
prohibited.
Cheers,
- Ira McDonald, consulting architect at Sharp and Xerox
High North Inc
-----Original Message-----
From: McDonald, Ira [mailto:imcdonald@sharplabs.com]
Sent: Wednesday, December 20, 2000 1:35 PM
To: 'ipp@pwg.org'; 'ifx@pwg.org'
Subject: IPP> I-D registering XHTML as a MIME media type
Hi folks,
Of particular interest to those interested in XHTML as a supported
source format for IPP Printers. Also those interested in the MS
UPnP printing effort (which is defining XHTML-Print, an extension
of XHTML-Basic with some CSS formatting).
Available at the IETF I-D repository in the directory:
ftp://ftp.ietf.org/internet-drafts
in the file:
draft-baker-xhtml-media-reg-00.txt
Cheers,
- Ira McDonald, consulting architect at Sharp and Xerox
High North
-------------------------------------------------------
[here are the Abstract and Introduction verbatim]
Abstract
This document defines the "application/xhtml+xml" MIME media type
for XHTML based markup languages; it is not intended to obsolete
any previous IETF documents, in particular RFC 2854 which registers
"text/html".
This document was prepared by members of the W3C HTML working group
based on the structure, and some of the content, of RFC 2854, the
registration of "text/html". Please send comments to
www-html@w3.org, a public mailing list with archives at
<http://lists.w3.org/Archives/Public/www-html/>.
1. Introduction
In 1998, the W3C HTML working group began work on reformulating HTML
in terms of XML 1.0 [XML] and XML Namespaces [XMLNS]. The first
part of that work concluded in January 2000 with the publication of
the XHTML 1.0 Recommendation [XHTML1], the reformulation for HTML
4.01 [HTML401].
Work continues in the HTML WG on XHTML Modularization (see
http://www.w3.org/TR/xhtml-modularization), the decomposition of
XHTML 1.0 into modules that can be used to compose new XHTML based
languages, plus a framework for supporting this composition.
As of December 2000, the HTML WG has taken no official position on
what MIME media type should be used to describe XHTML 1.0 or any
other XHTML based language, except in the case where XHTML 1.0
documents satisfy certain additional requirements (see [XHTML1]
section 5.1) and can be described with "text/html" (see [TEXTHTML]).
This document only registers a new MIME media type,
"application/xhtml+xml". It does not define anything more than is
required to perform this registration. The HTML WG expects to
publish further documentation on this subject, including but not
limited to, information about rules for which documents should and
should not be described with this new media type, and further
information about recognizing XHTML documents.
This document follows the convention set out in [XMLMIME] for the
MIME subtype name; attaching the suffix "+xml" to denote that the
entity being described conforms to the XML syntax as defined in XML
1.0 [XML].
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