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  ITU-T A.5 justification information for referenced document Standard, 4.0 in draft X.520
1. Clear description of the referenced document:
Name: Standard, 4.0
Title: The Unicode Consortium, The Unicode Standard, Version 4.0.
2. Status of approval:
This is a Unicode Consortium Standard Published in 2000 with update 4.0 published in 2003.
3. Justification for the specific reference:
Rec. ITU-T X.520 references The Unicode Standard, Version 4.0 for using Unicode-based strings.
4. Current information, if any, about IPR issues:
No Issues.
5. Other useful information describing the "Quality" of the document:
The first version of The Unicode Standard was published in October 1991, and has been widely used specifying character sets and properties for across multiple international languages. 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 Unicode Standard.
7. Relationship with other existing or emerging documents:
The Unicode Standard is related to the following: " ISO/IEC 10646-1
8. Any explicit references within that referenced document should also be listed:
The Unicode Standard has only references to previous versions of the Unicode Standard.
9. Qualification of UNICODE:
SG17 requested, A.4 and A.5 qualification was approved by TSB Dir
10. Other (for any supplementary information):
None
Note: This form is based on Recommendation ITU-T A.5