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  ITU-T A.5 justification information for referenced document CSS2.1 (2009) in draft H.760
1. Clear description of the referenced document:
Name: CSS2.1 (2009)
Title: World Wide Web Consortium (W3C), Cascading Style Sheets Level 2 Revision 1 (CSS 2.1) Specification
2. Status of approval:
This is a W3C Recommendation Published in 2007.
3. Justification for the specific reference:
IPTV terminal devices treats CSS2.1, specified in this specification, for content presentation.
4. Current information, if any, about IPR issues:
No Issues.
5. Other useful information describing the "Quality" of the document:
CSS 2.1 was published in July 2007, and has been widely 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 2.1.
7. Relationship with other existing or emerging documents:
CSS 2.1 is widely related to the HTML related dosuments. See item (8).
8. Any explicit references within that referenced document should also be listed:
[COLORIMETRY]/
"Colorimetry", Third Edition, Commission Internationale de l'Eclairage, CIE Publication 15:2004, ISBN 3-901-906-33-9./
Available at http://www.cie.co.at/publ/abst/15-2004.html /
[FLEX]/
"Flex: The Lexical Scanner Generator", Version 2.3.7, ISBN 1882114213. /
[HTML4]/
"HTML 4.01 Specification", D. Raggett, A. Le Hors, I. Jacobs, 24 December 1999./
The latest version of the specification is available at http://www.w3.org/TR/html4/. The Recommendation defines three document type definitions: Strict, Transitional, and Frameset, all reachable from the Recommendation. /
[ICC42]/
Specification ICC.1:2004-10 (Profile version 4.2.0.0) Image technology colour management – Architecture, profile format, and data structure./
Available at http://www.color.org/icc_specs2.html /
[ISO8879]/
"ISO 8879:1986(E): Information processing - Text and Office Systems - Standard Generalized Markup Language (SGML)", International Organization for Standardization (ISO), 15 October 1986. /
[ISO10646]/
"Information Technology - Universal Multiple- Octet Coded Character Set (UCS) - Part 1: Architecture and Basic Multilingual Plane", ISO/IEC 10646-1:2003. Useful roadmap of the BMP and plane 1 documents show which scripts sit at which numeric ranges. /
[PNG]/
"Portable Network Graphics (PNG) Specification (Second Edition)", David Duce, ed., 10 November 2003./
Available at http://www.w3.org/TR/PNG/. /
[RFC3986]/
"Uniform Resource Identifier (URI): Generic Syntax," T. Berners-Lee, R. Fielding, L. Masinter, January 2005./
Available at http://www.ietf.org/rfc/rfc3986. /
[RFC2045]/
"Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies", N. Freed and N. Borenstein, November 1996./
Available at http://www.ietf.org/rfc/rfc2045.txt. Note that this RFC obsoletes RFC1521, RFC1522, and RFC1590. /
[RFC2616]/
"HTTP Version 1.1 ", R. Fielding, J. Gettys, J. Mogul, et al., June 1999./
Available at http://www.ietf.org/rfc/rfc2616.txt. /
[RFC2119]/
"Key words for use in RFCs to Indicate Requirement Levels", S. Bradner, March 1997./
Available at http://www.ietf.org/rfc/rfc2119.txt. /
[RFC2318]/
"The text/css Media Type", H. Lie, B. Bos, C. Lilley, March 1998./
Available at http://www.ietf.org/rfc/rfc2318.txt. /
[SRGB]/
IEC 61966-2-1 (1999-10) - "Multimedia systems and equipment - Colour measurement and management - Part 2-1: Colour management - Default RGB colour space - sRGB, ISBN: 2-8318-4989-6 ?ICS codes: 33.160.60, 37.080 ?TC 100 ?51 pp./
Available at http://domino.iec.ch/webstore/webstore.nsf/artnum/025408 /
[UAAG10]/
"User Agent Accessibility Guidelines 1.0." Ian Jacobs, Jon Gunderson, Eric Hansen (editors). 17 December 2002./
Available at http://www.w3.org/TR/2002/REC-UAAG10-20021217 /
[UNICODE]/
The Unicode Consortium. The Unicode Standard, Version 4.1.0, defined by: The Unicode Standard, Version 4.0 (Boston, MA, Addison-Wesley, 2003. ISBN 0-321-18578-1), as amended by Unicode 4.0.1 and Unicode 4.1.0 and as updated from time to time by the publication of new versions. (See http://www.unicode.org/unicode/standard/versions/ for the latest version and additional information on versions of the standard and of the Unicode Character Database)./
Available at http://www.unicode.org/versions/Unicode4.1.0/ /
[XML10]/
"Extensible Markup Language (XML) 1.0 (third edition)" T. Bray, J. Paoli, C.M. Sperberg-McQueen, Eve Maler, Fran~s Yergeau, editors, 4 February 2004./
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