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  ITU-T A.5 justification information for referenced document CSS2 (2008) in draft H.763.1
1. Clear description of the referenced document:
Name: CSS2 (2008)
Title: World Wide Web Consortium (W3C), Cascading Style Sheets, level 2 CSS2 Specification W3C Recommendation
2. Status of approval:
This is a W3C Recommendation Published in 2008.
3. Justification for the specific reference:
This specification (which builds on CSS1) is widely used to express style of web documents. H.IPTV-MAFR.4 provides a presentation style profile for documents targeted to IPTV terminal devices based on a subset of this specification.
4. Current information, if any, about IPR issues:
No Issues.
5. Other useful information describing the "Quality" of the document:
CSS 2 was originally published in May 1998, and has been extensively used. Conformance requirements are clear, and the specification is readily and widely available.
6. The degree of stability or maturity of the document:
The document is considered stable and provides a complete description of the CSS 2.
7. Relationship with other existing or emerging documents:
CSS 2 is related to the HTML documents. See item (8).
8. Any explicit references within that referenced document should also be listed:
[COLORIMETRY] /
"Colorimetry, Second Edition", CIE Publication 15.2-1986, ISBN 3-900-734-00-3./
Available at http://www.cie.co.at/publ/abst/15-2-86.html /
[CSS1] /
"Cascading Style Sheets, level 1", H. W. Lie and B. Bos, 17 December 1996./
Available at http://www.w3.org/TR/REC-CSS1-961217.html. /
[FLEX] /
"Flex: The Lexical Scanner Generator", Version 2.3.7, ISBN 1882114213. /
[HTML40] /
"HTML 4.0 Specification", D. Raggett, A. Le Hors, I. Jacobs, 8 July 1997./
Available at http://www.w3.org/TR/REC-html40/. The Recommendation defines three document type definitions: Strict, Transitional, and Frameset, all reachable from the Recommendation. /
[IANA] /
"Assigned Numbers", STD 2, RFC 1700, USC/ISI, J. Reynolds and J. Postel, October 1994./
Available at ftp://ftp.internic.net/rfc/rfc1700.txt. /
[ICC32] /
"ICC Profile Format Specification, version 3.2", 1995./
Available at ftp://sgigate.sgi.com/pub/icc/ICC32.pdf. /
[ISO8879] /
ISO 8879:1986 "Information Processing -- Text and Office Systems -- Standard Generalized Markup Language (SGML)", ISO 8879:1986./
For the list of SGML entities, consult ftp://ftp.ifi.uio.no/pub/SGML/ENTITIES/. /
[ISO10646] /
"Information Technology - Universal Multiple- Octet Coded Character Set (UCS) - Part 1: Architecture and Basic Multilingual Plane", ISO/IEC 10646-1:1993. The current specification also takes into consideration the first five amendments to ISO/IEC 10646-1:1993. Useful roadmap of the BMP and roadmap of plane 1 documents show which scripts sit at which numeric ranges. /
[PNG10] /
"PNG (Portable Network Graphics) Specification, Version 1.0 specification", T. Boutell ed., 1 October 1996./
Available at http://www.w3.org/pub/WWW/TR/REC-png-multi.html. /
[RFC1808] /
"Relative Uniform Resource Locators", R. Fielding, June 1995./
Available at ftp://ds.internic.net/rfc/rfc1808.txt. /
[RFC2045] /
"Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies", N. Freed and N. Borenstein, November 1996./
Available at ftp://ftp.internic.net/rfc/rfc2045.txt. Note that this RFC obsoletes RFC1521, RFC1522, and RFC1590. /
[RFC2068] /
"HTTP Version 1.1 ", R. Fielding, J. Gettys, J. Mogul, H. Frystyk Nielsen, and T. Berners-Lee, January 1997./
Available at ftp://ftp.internic.net/rfc/rfc2068.txt. /
[RFC2070] /
"Internationalization of the HyperText Markup Language", F. Yergeau, G. Nicol, G. Adams, and M. Dürst, January 1997./
Available at ftp://ds.internic.net/rfc/rfc2070.txt. /
[RFC2119] /
"Key words for use in RFCs to Indicate Requirement Levels", S. Bradner, March 1997./
Available at ftp://ds.internic.net/rfc/rfc2119.txt. /
[RFC2318] /
"The text/css Media Type", H. Lie, B. Bos, C. Lilley, March 1998./
Available at ftp://ds.internic.net/rfc/rfc2318.txt. /
[RFC1738] /
"Uniform Resource Locators", T. Berners-Lee, L. Masinter, and M. McCahill, December 1994./
Available at ftp://ds.internic.net/rfc/rfc1738.txt. /
[SRGB] /
"Proposal for a Standard Color Space for the Internet - sRGB", M. Anderson, R. Motta, S. Chandrasekar, M. Stokes./
Available at http://www.w3.org/Graphics/Color/sRGB.html. /
[UNICODE] /
"The Unicode Standard: Version 2.0", The Unicode Consortium, Addison-Wesley Developers Press, 1996. For bidirectionality, see also the corrigenda at http://www.unicode.org/unicode/uni2errata/bidi.htm. For more information, consult the Unicode Consortium's home page at http://www.unicode.org/. /
The latest version of Unicode. For more information, consult the Unicode Consortium's home page at http://www.unicode.org/. /
[URI] /
"Uniform Resource Identifiers (URI): Generic Syntax and Semantics", T. Berners-Lee, R. Fielding, L. Masinter, 18 November 1997./
Available at http://www.ics.uci.edu/pub/ietf/uri/draft-fielding-uri-syntax-01.txt. This is a work in progress that is expected to update [RFC1738] and [RFC1808]. /
[XML10] /
"Extensible Markup Language (XML) 1.0" T. Bray, J. Paoli, C.M. Sperberg-McQueen, editors, 10 February 1998./
Available at http://www.w3.org/TR/REC-xml/. /
[YACC] /
"YACC - Yet another compiler compiler", S. C. Johnson, Technical Report, Murray Hill, 1975.
9. Qualification of W3C:
W3C is qualified for including references in ITU-T Recommendations under Recommendation A.5 procedures.
10. Other (for any supplementary information):
All standards are available on-line. An index of Recommendation and their status may be found in the W3C archives at http://www.w3.org/TR/ .
Note: This form is based on Recommendation ITU-T A.5