Internet Engineering Task Force (IETF) P. Fältström Request for Comments: 9233 Netnod Category: Standards Track March 2022 ISSN: 2070-1721 Internationalized Domain Names for Applications 2008 (IDNA2008) and Unicode 12.0.0 Abstract This document describes the changes between Unicode 6.0.0 and Unicode 12.0.0 in the context of the current version of Internationalized Domain Names for Applications 2008 (IDNA2008). Some additions and changes have been made in the Unicode Standard that affect the values produced by the algorithm IDNA2008 specifies. IDNA2008 allows adding exceptions to the algorithm for backward compatibility; however, this document does not add any such exceptions. This document provides the necessary tables to IANA to make its database consistent with Unicode 12.0.0. To improve understanding, this document describes systems that are being used as alternatives to those that conform to IDNA2008. Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 7841. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc9233. Copyright Notice Copyright (c) 2022 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Revised BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Revised BSD License. Table of Contents 1. Introduction 2. Background 2.1. IDNA2008 Documents 2.2. Additional Important IDNA2008-Related Documents 2.3. Deployment 3. Notable Changes between Unicode 6.0.0 and 12.0.0 3.1. Changes between Unicode 6.0.0 and 7.0.0 3.2. Changes between Unicode 7.0.0 and 10.0.0 3.3. Changes between Unicode 10.0.0 and 11.0.0 3.4. Changes between Unicode 11.0.0 and 12.0.0 4. U+111C9 SHARADA SANDHI MARK 5. Conclusion 6. IANA Considerations 7. Security Considerations 8. References 8.1. Normative References 8.2. Informative References Appendix A. Changes from Unicode 6.0.0 to Unicode 7.0.0 Appendix B. Changes from Unicode 7.0.0 to Unicode 8.0.0 Appendix C. Changes from Unicode 8.0.0 to Unicode 9.0.0 Appendix D. Changes from Unicode 9.0.0 to Unicode 10.0.0 Appendix E. Changes from Unicode 10.0.0 to Unicode 11.0.0 Appendix F. Changes from Unicode 11.0.0 to Unicode 12.0.0 Acknowledgments Author's Address 1. Introduction The current version of Internationalized Domain Names for Applications (IDNA) was initiated in 2008, and despite not being completed until 2010, is widely known as "IDNA2008". It is specified in the series of documents listed in Section 2.1. The IDNA2008 standard includes an algorithm by which a derived property value is calculated based on the properties defined in the Unicode Standard. The derived property values that can be calculated are defined in RFC 5892 [RFC5892]. Below is a summary to aid in the reading of this document. For definition of the terms, please see RFC 5892 [RFC5892]. PROTOCOL VALID: Those that are allowed to be used in IDNs. Code points with this property value are permitted for general use in IDNs. However, the fact that a label consists only of code points with this property value does not imply that the label can be used in DNS. The abbreviated term PVALID is used to refer to this value. CONTEXTUAL RULE REQUIRED: Some characteristics of the character, such as it being invisible in certain contexts or problematic in others, require that it not be used in labels unless specific other characters or properties are present. The abbreviated term CONTEXT is used to refer to this value. As explained in RFC 5892 [RFC5892], CONTEXT is in turn divided into CONTEXTJ and CONTEXTO. DISALLOWED: Those that should clearly not be included in IDNs. Code points with this property value are not permitted in IDNs. UNASSIGNED: Those code points that are not designated (i.e., are unassigned) in the Unicode Standard. When the Unicode Standard is updated, new code points are assigned and already assigned code points can have their property values changed. * Assigning code points can create problems if the newly assigned code points are compositions of existing code points and the normalization relationships associated with those code points should have been changed because of that. * Changing properties for already assigned code points can create problems if the property change results in changes to the derived property value. A previously allowed code point whose derived property value is PVALID may now be prohibited if its derived property value changes to DISALLOWED. The problem can also happen the other way around: a code point that was not allowed (and thus was prohibited) can suddenly be allowed. * Problems can also be created if the properties assigned to those code points are inconsistent with IDNA2008 assumptions about how properties are assigned and/or about how code points with those properties are used or behave. There were three incompatible changes in the Unicode Standard between Unicode 5.2.0 [Unicode-5.2.0] and Unicode 6.0.0 [Unicode-6.0.0]; they are described in RFC 6452 [RFC6452]. The code points U+0CF1 and U+0CF2 had a derived property value change from DISALLOWED to PVALID, and the code point U+19DA had a change in derived property value from PVALID to DISALLOWED. These changes where examined in great detail, but the IETF concluded that these changes to the Unicode Standard did not warrant an update to RFC 5892 [RFC5892]. As described in Section 3, more incompatible changes have been made to code points between Unicode 6.0.0 and Unicode 12.0.0 [Unicode-12.0.0]; however, the changes in the derived property values do not result in exceptions (as defined in Section 2.6 of RFC 5892 [RFC5892]) that would require an update to the "IDNA Contextual Rules" registry (which would also be considered an update to RFC 5892 [RFC5892]). Further, in 2015, the Internet Architecture Board (IAB) issued a statement [IAB2005-1] that advised the community to avoid using any of the potentially problematic code points and asked the IETF to resolve the issues related to the code point ARABIC LETTER BEH WITH HAMZA ABOVE (U+08A1) that was introduced in Unicode 7.0.0 [Unicode-7.0.0]. In February of that year, the statement was revised [IAB2005-2] to focus on the latter request. More details about the problem of code point sequences not normalizing as one might expect appear in a draft that was part of the discussion [IDNA7]. The result of the work in the IETF was that no exception was added to RFC 5892 [RFC5892]; however, it should be noted that the review of the issues around U+08A1 indicated that this code point is not an isolated case and that a number of long-standing PVALID code points may have similar issues. While the affected code points remain PVALID in this document, identification of the problem resulted in a clarification of the review process for new Unicode versions. That clarification, which reinforces the original review plan to capture issues like these, was published as RFC 8753 [RFC8753]. Any review of Unicode versions after 12.0.0 should be made according to RFC 8753 [RFC8753]; an objective of this document is to ensure that a proper review of such versions after version 12.0.0 can be made. 2. Background 2.1. IDNA2008 Documents IDNA2008 consists of the following documents. The documents in the set have informal names. * "Internationalized Domain Names for Applications (IDNA): Definitions and Document Framework" [RFC5890], informally called "Defs" or "Definitions", contains definitions and other material that are needed for understanding other documents in the set. * "Internationalized Domain Names in Applications (IDNA): Protocol" [RFC5891], informally called "Protocol", describes the core IDNA2008 protocol and its operations. It needs to be interpreted in combination with the Bidi document (described below). RFC 5891 [RFC5891] obsoletes RFC 3491 [RFC3491] and, in particular, the use of the tables to which RFC 3491 [RFC3491] refers. * "The Unicode Code Points and Internationalized Domain Names for Applications (IDNA)" [RFC5892], informally called "Tables", lists the categories and rules that identify the code points allowed in a label written in native character form (called a "U-label"), and is based on Unicode 5.2.0 [Unicode-5.2.0] code point assignments and additional rules unique to IDNA2008. The Unicode-based rules in RFC 5892 are expected to be stable across Unicode updates and hence independent of Unicode versions. * "Right-to-Left Scripts for Internationalized Domain Names for Applications (IDNA)" [RFC5893], informally called "Bidi", specifies special rules for labels that contain characters that are written from right to left. * "Internationalized Domain Names for Applications (IDNA): Background, Explanation, and Rationale" [RFC5894], informally called "Rationale", provides an overview of the protocol and associated tables, and gives explanatory material and some rationale for the decisions that led to IDNA2008. It also contains advice for DNS registry operators and others who use Internationalized Domain Names (IDNs). * "Mapping Characters for Internationalized Domain Names in Applications (IDNA) 2008" [RFC5895], informally called "Mapping", discusses the issue of mapping characters into other characters and provides guidance for doing so when that is appropriate. RFC 5895 provides advice only and is not a required part of IDNA. 2.2. Additional Important IDNA2008-Related Documents There are other documents important for the understanding and functioning of IDNA2008, for example this. * "The Unicode Code Points and Internationalized Domain Names for Applications (IDNA) - Unicode 6.0" [RFC6452] describes some changes made to Unicode 6.0.0 [Unicode-6.0.0] that resulted in derived property value changes for the code points U+0CF1, U+0CF2, and U+19DA. U+0CF1 and U+0CF2 changed from DISALLOWED to PVALID, while U+19DA changed from PVALID to DISALLOWED. The IETF concluded that no update to RFC 5892 [RFC5892] was needed based on the changes made in Unicode 6.0.0 [Unicode-6.0.0]. As a result, the derived property value remained aligned with the Unicode Standard. Specifically, no exception was added. 2.3. Deployment There are many variations on the general IDNA model in use in the various parts of the community. The following lists some of the strategies that implementations that claim to be IDNA compliant are known to use, but it should be noted the list is not complete: * IDNA2003 as specified in RFC 3490 [RFC3490] and RFC 3491 [RFC3491]. Those specifications are dependent on case folding, Normalization Form KC (NFKC), and on tables that specify for each code point whether it is allowed to be used or not, with a distinction made between use for "stored strings" and "query strings". The tables themselves are dependent on Unicode 3.2 [Unicode-3.2.0]. * A number of variations on IDNA2003, sometimes presented as "updated IDNA2003" or the like, which follow the principles of IDNA2003 as understood by the implementers but that use tables that represent how the implementers believe Stringprep [RFC3454] and Nameprep [RFC3491] would have evolved had the IETF not moved in the direction of IDNA2008 instead. * A mix between IDNA2003 and IDNA2008 where code points assigned to Unicode after Unicode 3.2.0 [Unicode-3.2.0] have derived property value calculated according to the algorithm specified in IDNA2008. * A mix between IDNA2003 and IDNA2008 according to the Unicode Technical Standard #46 [UTS-46]. Because that document specifies different profiles, there are several variations that leave users with no guarantee that two applications claiming conformance to UTS#46 will interoperate well with each other much less with conforming IDNA2008 implementations. UTS#46 is ultimately based on a normative table very much like the one used by Stringprep [RFC3454] but updated for each new version of Unicode. * The (normative) IDNA2008 algorithm applied to whatever version of Unicode Standard exists in the operating system and/or libraries used, independent of whatever version of tables appears in the (non-normative) IANA database. In practice, the Unicode Consortium creates a maximum set of code points by assigning code points in the Unicode Standard. The IDNA2008 rules use the Unicode Standard to create a further subset of code points and context that are permitted in DNS labels associated with its PVALID and CONTEXT (CONTEXTJ or CONTEXTO) derived property values. DNS registries and other organizations that deal with IDNs are supposed to create their own subsets from IDNA2008 for use by those registries and organizations. This progressive subsetting and narrowing of the repertoire of code points that can be used in labels is an implementation of the principles of being conservative when deciding what code points to include in such a subset. SAC-084 [SAC-084] and RFC 6912 [RFC6912] recommend to DNS registries and other organizations to be conservative when creating their subsets and to use the principle of creating subsets by inclusion. See also Security Considerations (Section 7) in this document. 3. Notable Changes between Unicode 6.0.0 and 12.0.0 Among the changes between the Unicode versions, most code points that change derived property value change from UNASSIGNED to PVALID or from UNASSIGNED to DISALLOWED. The interesting changes in derived property values include other changes. All changes between the major versions of Unicode can be found in Appendix A (6.0.0-7.0.0), Appendix B (7.0.0-8.0.0), Appendix C (8.0.0-9.0.0), Appendix D (9.0.0-10.0.0), Appendix E (10.0.0-11.0.0), and Appendix F (11.0.0-12.0.0). 3.1. Changes between Unicode 6.0.0 and 7.0.0 Change in number of characters in each category: * PVALID changed from 97418 to 99867 (+2449) * UNASSIGNED changed from 865081 to 861509 (-3572) * CONTEXTJ did not change, at 2 * CONTEXTO did not change, at 25 * DISALLOWED changed from 151586 to 152709 (+1123) * TOTAL did not change, at 1114112 There are no changes made to Unicode between version 6.0.0 and 7.0.0 that impact IDNA2008 calculation of the derived property values. The code points U+17B4 KHMER VOWEL INHERENT AQ and U+17B5 KHMER VOWEL INHERENT AA both changed the General Category from Cf (Format) to Mn (Nonspacing_Mark), but that did not impact the calculation of the derived property value which stayed at DISALLOWED. The character ARABIC LETTER BEH WITH HAMZA ABOVE (U+08A1) was introduced in Unicode 7.0.0. This was discussed extensively in the IETF and also by the IAB in their statement [IAB2005-1] requesting the IETF to investigate the issue. Specifically, the IAB stated: | On the same precautionary principle, the IAB recommends that the | Internationalized Domain Names for Applications (IDNA) Parameters | registry not be | updated to Unicode 7.0.0 until the IETF has consensus on a | solution to this problem. The discussion in the IETF concluded that although it is possible to create "the same" character in multiple ways, the issue with U+08A1 is not unique. The character U+08A1 (ARABIC LETTER BEH WITH HAMZA ABOVE) can be represented with the sequence ARABIC LETTER BEH (U+0628) and ARABIC HAMZA ABOVE (U+0654). This is identical to LATIN SMALL LETTER O WITH STROKE (U+00F8), which can be represented with the sequence LATIN SMALL LETTER O (U+006F) followed by COMBINING SHORT SOLIDUS OVERLAY (U+0337). Although the discussion about this specific code point resulted in acceptance of the derived property value of PVALID, the underlying problem with combining sequences is not understood fully. Therefore, it cannot be claimed that this case can be extrapolated to other situations and other code points. 3.2. Changes between Unicode 7.0.0 and 10.0.0 Change in number of characters in each category: * Code points that changed derived property value: 0 * PVALID changed from 99867 to 122411 (+22544) * UNASSIGNED changed from 861509 to 837775 (-23734) * CONTEXTJ did not change, at 2 * CONTEXTO did not change, at 25 * DISALLOWED changed from 152709 to 153899 (+1190) * TOTAL did not change, at 1114112 There are no changes made to Unicode between version 7.0.0 and 10.0.0 that impact IDNA2008 calculation of the derived property values. 3.3. Changes between Unicode 10.0.0 and 11.0.0 Change in number of characters in each category: * Code points that changed derived property value: 1 * PVALID changed from 122411 to 122734 (+323) * UNASSIGNED changed from 837775 to 837091 (-684) * CONTEXTJ did not change, at 2 * CONTEXTO did not change, at 25 * DISALLOWED changed from 153899 to 154260 (+361) * TOTAL did not change, at 1114112 * Georgian letters in the ranges U+10D0..U+10FA and U+10FD..U+10FF had their General Category changed from Lo (Other_Letter) to Ll (Lowercase_Letter) to reflect their status as the lowercase of new Georgian case pairs. Case mappings were also added. * SHARADA SANDHI MARK (U+111C9) General Category was changed from Po (Other_Punctuation) to Mn (Nonspacing_Mark), and the Bidi property was changed from L (Left to Right) to NSM (Nonspacing Mark). * The properties for ZANABAZAR SQUARE VOWEL SIGN AI (U+11A07) and ZANABAZAR SQUARE VOWEL SIGN AU (U+11A08) were corrected from Mc to Mn. * SPHERICAL ANGLE OPENING UP (U+29A1) was changed to Bidi Mirrored to No. These changes to the Unicode Standard have the following implications for these code points: * The newly assigned 684 characters are assigned a derived property value as of a result of applying the IDNA2008 algorithm. * The Georgian letters in the ranges U+10D0..U+10FA and U+10FD..U+10FF existed before IDNA2008 was created. Applying the IDNA2008 algorithm to the code points assigned the derived property value PVALID, and that value is unchanged even if the underlying Unicode properties have changed. The newly encoded Mtavruli letters have General Category Lu (Uppercase_Letter) and are therefore DISALLOWED. * The U+111C9 SHARADA SANDHI MARK was added to Unicode 8.0.0 [Unicode-8.0.0]. Applying the IDNA2008 algorithm to the code point assigned the derived property value DISALLOWED. The changes in the underlying properties in Unicode 11.0.0 [Unicode-11.0.0] caused the derived property value to change to PVALID. * The characters ZANABAZAR SQUARE VOWEL SIGN AI (U+11A07) and ZANABAZAR SQUARE VOWEL SIGN AU (U+11A08) were added to Unicode 10.0.0 [Unicode-10.0.0]. Applying the IDNA2008 algorithm to the code points assigned the derived property value PVALID, and that value is unchanged even if the underlying Unicode properties have changed. * SPHERICAL ANGLE OPENING UP (U+29A1) existed before IDNA2008 was created. Applying the IDNA2008 algorithm to the code point assigned the derived property value DISALLOWED, and that value is unchanged even if the underlying Unicode properties have changed. 3.4. Changes between Unicode 11.0.0 and 12.0.0 Change in number of characters in each category: * Code points that changed derived property value: 0 * PVALID changed from 122734 to 123006 (+272) * UNASSIGNED changed from 837091 to 836537 (-554) * CONTEXTJ did not change, at 2 * CONTEXTO did not change, at 25 * DISALLOWED changed from 154260 to 154542 (+282) * TOTAL did not change, at 1114112 4. U+111C9 SHARADA SANDHI MARK As one can see in Section 3, an incompatible property change was made between Unicode 6.0.0 and 12.0.0, affecting the code point U+111C9. Its derived property value thus changed from DISALLOWED to PVALID. In situations like these, IDNA2008 allows for addition of rules to RFC 5892 [RFC5892], Section 2.7. If the code point is accepted, it might still be rejected if validated by software based on versions of Unicode older than 12.0.0. As the character is rarely used outside the group of Sharada specialists but is used in some records for indicating sandhi breaks, the conclusion was that it could either be added as an exception or allowed to change its property value. As including an exception would require implementation changes to deployments of IDNA20008, the IETF has decided not to add a BackwardCompatible rule to IDNA2008 (i.e., Section 2.7 of RFC 5892 [RFC5892]) for this code point. This also ensures all sandhi marks are treated equally. 5. Conclusion As described in Sections 3 and 4, changes have been made to Unicode between version 6.0.0 and 12.0.0. Some changes to specific characters changed their derived property value, whereas other changes did not. Given the deployment considerations described in Section 2.3 and changes in the Unicode Standard described in Sections 3 and 4, including implications to normalization, the conclusion is not to add any exception rules to IDNA2008. This document addresses only changes to Unicode between version 6.0.0 and version 12.0.0. Changes in future Unicode versions might result in the conclusion that exception rules need to be added to IDNA2008 after the review process explained in RFC 8753 [RFC8753]. Separately from any changes in Unicode, the IETF might conclude that updates to RFC 5892 [RFC5892] or other IDNA2008 documents might become necessary; such updates might include changes to the algorithm specified in IDNA2008 as well as additional rules, categories, or other forms of tuning, like the clarifications in RFC 8753 [RFC8753]. 6. IANA Considerations IANA updated the "IDNA Rules and Derived Property Values" [IANA-IDNA] registry after the expert reviewer validated that the derived property values were calculated correctly. 7. Security Considerations This document makes recommendations regarding the use of the IDNA2008 algorithm for calculation of derived property values, based on Unicode version 12.0.0. This recommendation does not say anything about what recommendations to make for future versions of the Unicode Standard. Not following these recommendations can lead to various security issues. Specifically, allowing confusable characters may lead to various phishing attacks, as described in the Security Consideration Sections in the documents listed in Section 2.1. 8. References 8.1. Normative References [RFC3491] Hoffman, P. and M. Blanchet, "Nameprep: A Stringprep Profile for Internationalized Domain Names (IDN)", RFC 3491, DOI 10.17487/RFC3491, March 2003, . [RFC5890] Klensin, J., "Internationalized Domain Names for Applications (IDNA): Definitions and Document Framework", RFC 5890, DOI 10.17487/RFC5890, August 2010, . [RFC5891] Klensin, J., "Internationalized Domain Names in Applications (IDNA): Protocol", RFC 5891, DOI 10.17487/RFC5891, August 2010, . [RFC5892] Faltstrom, P., Ed., "The Unicode Code Points and Internationalized Domain Names for Applications (IDNA)", RFC 5892, DOI 10.17487/RFC5892, August 2010, . [RFC5893] Alvestrand, H., Ed. and C. Karp, "Right-to-Left Scripts for Internationalized Domain Names for Applications (IDNA)", RFC 5893, DOI 10.17487/RFC5893, August 2010, . [RFC6452] Faltstrom, P., Ed. and P. Hoffman, Ed., "The Unicode Code Points and Internationalized Domain Names for Applications (IDNA) - Unicode 6.0", RFC 6452, DOI 10.17487/RFC6452, November 2011, . 8.2. Informative References [IAB2005-1] Internet Architecture Board, "IAB Statement on Identifiers and Unicode 7.0.0", 27 January 2015, . [IAB2005-2] Internet Architecture Board, "IAB Statement on Identifiers and Unicode 7.0.0", 11 February 2015, . [IANA-IDNA] IANA, "IDNA Rules and Derived Property Values", February 2022, . [IDNA7] Klensin, J. C. and P. Faltstrom, "IDNA Update for Unicode 7.0 and Later Versions", Work in Progress, Internet-Draft, draft-klensin-idna-5892upd-unicode70-05, 8 October 2017, . [RFC3454] Hoffman, P. and M. Blanchet, "Preparation of Internationalized Strings ("stringprep")", RFC 3454, DOI 10.17487/RFC3454, December 2002, . [RFC3490] Faltstrom, P., Hoffman, P., and A. Costello, "Internationalizing Domain Names in Applications (IDNA)", RFC 3490, DOI 10.17487/RFC3490, March 2003, . [RFC5894] Klensin, J., "Internationalized Domain Names for Applications (IDNA): Background, Explanation, and Rationale", RFC 5894, DOI 10.17487/RFC5894, August 2010, . [RFC5895] Resnick, P. and P. Hoffman, "Mapping Characters for Internationalized Domain Names in Applications (IDNA) 2008", RFC 5895, DOI 10.17487/RFC5895, September 2010, . [RFC6912] Sullivan, A., Thaler, D., Klensin, J., and O. Kolkman, "Principles for Unicode Code Point Inclusion in Labels in the DNS", RFC 6912, DOI 10.17487/RFC6912, April 2013, . [RFC8753] Klensin, J. and P. Fältström, "Internationalized Domain Names for Applications (IDNA) Review for New Unicode Versions", RFC 8753, DOI 10.17487/RFC8753, April 2020, . [SAC-084] The Security and Stability Advisory Committee, "SAC084", SSAC Comments on Guidelines for the Extended Process Similarity Review Panel for the IDN ccTLD Fast Track Process, August 2016, . [Unicode-3.2.0] The Unicode Consortium, "The Unicode Standard, Version 3.2.0", Mountain View: The Unicode Consortium, ISBN 0-201-61633-5, March 2002, . [Unicode-5.2.0] The Unicode Consortium, "The Unicode Standard, Version 5.2.0", Mountain View: The Unicode Consortium, ISBN 978-1-936213-00-9, October 2009, . [Unicode-6.0.0] The Unicode Consortium, "The Unicode Standard, Version 6.0.0", Mountain View: The Unicode Consortium, ISBN 978-1-936213-01-6, October 2011, . [Unicode-7.0.0] The Unicode Consortium, "The Unicode Standard, Version 7.0.0", Mountain View: The Unicode Consortium, ISBN 978-1-936213-09-2, June 2014, . [Unicode-8.0.0] The Unicode Consortium, "The Unicode Standard, Version 8.0.0", Mountain View: The Unicode Consortium, ISBN 978-1-936213-10-8, June 2015, . [Unicode-10.0.0] The Unicode Consortium, "The Unicode Standard, Version 10.0.0", Mountain View: The Unicode Consortium, ISBN 978-1-936213-16-0, June 2017, . [Unicode-11.0.0] The Unicode Consortium, "The Unicode Standard, Version 11.0.0", Mountain View: The Unicode Consortium, ISBN 978-1-936213-19-1, June 2018, . [Unicode-12.0.0] The Unicode Consortium, "The Unicode Standard, Version 12.0.0", Mountain View: The Unicode Consortium, ISBN 978-1-936213-22-1, March 2019, . [UTS-46] The Unicode Consortium, "Unicode Technical Standard #46, Version 12.0.0", UNICODE IDNA COMPATIBILITY PROCESSING, March 2019, . Appendix A. Changes from Unicode 6.0.0 to Unicode 7.0.0 Changes from derived property value UNASSIGNED to either PVALID or DISALLOWED. 037F ; DISALLOWED # GREEK CAPITAL LETTER YOT 0528 ; DISALLOWED # CYRILLIC CAPITAL LETTER EN WITH LEFT HOOK 0529 ; PVALID # CYRILLIC SMALL LETTER EN WITH LEFT HOOK 052A ; DISALLOWED # CYRILLIC CAPITAL LETTER DZZHE 052B ; PVALID # CYRILLIC SMALL LETTER DZZHE 052C ; DISALLOWED # CYRILLIC CAPITAL LETTER DCHE 052D ; PVALID # CYRILLIC SMALL LETTER DCHE 052E ; DISALLOWED # CYRILLIC CAPITAL LETTER EL WITH DESCENDER 052F ; PVALID # CYRILLIC SMALL LETTER EL WITH DESCENDER 058D..058F ; DISALLOWED # RIGHT-FACING ARMENIAN ETERNITY SIGN..ARMENIAN 0604..0605 ; DISALLOWED # ARABIC SIGN SAMVAT..ARABIC NUMBER MARK ABOVE 061C ; DISALLOWED # ARABIC LETTER MARK 08A0..08B2 ; PVALID # ARABIC LETTER BEH WITH SMALL V BELOW..ARABIC 08E4..08FF ; PVALID # ARABIC CURLY FATHA..ARABIC MARK SIDEWAYS NOON 0978 ; PVALID # DEVANAGARI LETTER MARWARI DDA 0980 ; PVALID # BENGALI ANJI 0AF0 ; DISALLOWED # GUJARATI ABBREVIATION SIGN 0C00 ; PVALID # TELUGU SIGN COMBINING CANDRABINDU ABOVE 0C34 ; PVALID # TELUGU LETTER LLLA 0C81 ; PVALID # KANNADA SIGN CANDRABINDU 0D01 ; PVALID # MALAYALAM SIGN CANDRABINDU 0DE6..0DEF ; PVALID # SINHALA LITH DIGIT ZERO..SINHALA LITH DIGIT N 0EDE..0EDF ; PVALID # LAO LETTER KHMU GO..LAO LETTER KHMU NYO 10C7 ; DISALLOWED # GEORGIAN CAPITAL LETTER YN 10CD ; DISALLOWED # GEORGIAN CAPITAL LETTER AEN 10FD..10FF ; PVALID # GEORGIAN LETTER AEN..GEORGIAN LETTER LABIAL S 16F1..16F8 ; PVALID # RUNIC LETTER K..RUNIC LETTER FRANKS CASKET AE 17B4..17B5 ; DISALLOWED # KHMER VOWEL INHERENT AQ..KHMER VOWEL INHERENT 191D..191E ; PVALID # LIMBU LETTER GYAN..LIMBU LETTER TRA 1AB0..1ABD ; PVALID # COMBINING DOUBLED CIRCUMFLEX ACCENT..COMBININ 1ABE ; DISALLOWED # COMBINING PARENTHESES OVERLAY 1BAB..1BAD ; PVALID # SUNDANESE SIGN VIRAMA..SUNDANESE CONSONANT SI 1BBA..1BBF ; PVALID # SUNDANESE AVAGRAHA..SUNDANESE LETTER FINAL M 1CC0..1CC7 ; DISALLOWED # SUNDANESE PUNCTUATION BINDU SURYA..SUNDANESE 1CF3..1CF6 ; PVALID # VEDIC SIGN ROTATED ARDHAVISARGA..VEDIC SIGN U 1CF8..1CF9 ; PVALID # VEDIC TONE RING ABOVE..VEDIC TONE DOUBLE RING 1DE7..1DF5 ; PVALID # COMBINING LATIN SMALL LETTER ALPHA..COMBINING 2066..2069 ; DISALLOWED # LEFT-TO-RIGHT ISOLATE..POP DIRECTIONAL ISOLAT 20BA..20BD ; DISALLOWED # TURKISH LIRA SIGN..RUBLE SIGN 23F4..23FA ; DISALLOWED # BLACK MEDIUM LEFT-POINTING TRIANGLE..BLACK CI 2700 ; DISALLOWED # BLACK SAFETY SCISSORS 27CB ; DISALLOWED # MATHEMATICAL RISING DIAGONAL 27CD ; DISALLOWED # MATHEMATICAL FALLING DIAGONAL 2B4D..2B4F ; DISALLOWED # DOWNWARDS TRIANGLE-HEADED ZIGZAG ARROW..SHORT 2B5A..2B73 ; DISALLOWED # SLANTED NORTH ARROW WITH HOOKED HEAD..DOWNWAR 2B76..2B95 ; DISALLOWED # NORTH WEST TRIANGLE-HEADED ARROW TO BAR..RIGH 2B98..2BB9 ; DISALLOWED # THREE-D TOP-LIGHTED LEFTWARDS EQUILATERAL ARR 2BBD..2BC8 ; DISALLOWED # BALLOT BOX WITH LIGHT X..BLACK MEDIUM RIGHT-P 2BCA..2BD1 ; DISALLOWED # TOP HALF BLACK CIRCLE..UNCERTAINTY SIGN 2CF2 ; DISALLOWED # COPTIC CAPITAL LETTER BOHAIRIC KHEI 2CF3 ; PVALID # COPTIC SMALL LETTER BOHAIRIC KHEI 2D27 ; PVALID # GEORGIAN SMALL LETTER YN 2D2D ; PVALID # GEORGIAN SMALL LETTER AEN 2D66..2D67 ; PVALID # TIFINAGH LETTER YE..TIFINAGH LETTER YO 2E32..2E42 ; DISALLOWED # TURNED COMMA..DOUBLE LOW-REVERSED-9 QUOTATION 9FCC ; PVALID # A674..A67B ; PVALID # COMBINING CYRILLIC LETTER UKRAINIAN IE..COMBI A698 ; DISALLOWED # CYRILLIC CAPITAL LETTER DOUBLE O A699 ; PVALID # CYRILLIC SMALL LETTER DOUBLE O A69A ; DISALLOWED # CYRILLIC CAPITAL LETTER CROSSED O A69B ; PVALID # CYRILLIC SMALL LETTER CROSSED O A69C..A69D ; DISALLOWED # MODIFIER LETTER CYRILLIC HARD SIGN..MODIFIER A69F ; PVALID # COMBINING CYRILLIC LETTER IOTIFIED E A792 ; DISALLOWED # LATIN CAPITAL LETTER C WITH BAR A793..A795 ; PVALID # LATIN SMALL LETTER C WITH BAR..LATIN SMALL LE A796 ; DISALLOWED # LATIN CAPITAL LETTER B WITH FLOURISH A797 ; PVALID # LATIN SMALL LETTER B WITH FLOURISH A798 ; DISALLOWED # LATIN CAPITAL LETTER F WITH STROKE A799 ; PVALID # LATIN SMALL LETTER F WITH STROKE A79A ; DISALLOWED # LATIN CAPITAL LETTER VOLAPUK AE A79B ; PVALID # LATIN SMALL LETTER VOLAPUK AE A79C ; DISALLOWED # LATIN CAPITAL LETTER VOLAPUK OE A79D ; PVALID # LATIN SMALL LETTER VOLAPUK OE A79E ; DISALLOWED # LATIN CAPITAL LETTER VOLAPUK UE A79F ; PVALID # LATIN SMALL LETTER VOLAPUK UE A7AA..A7AD ; DISALLOWED # LATIN CAPITAL LETTER H WITH HOOK..LATIN CAPIT A7B0..A7B1 ; DISALLOWED # LATIN CAPITAL LETTER TURNED K..LATIN CAPITAL A7F7 ; PVALID # LATIN EPIGRAPHIC LETTER SIDEWAYS I A7F8..A7F9 ; DISALLOWED # MODIFIER LETTER CAPITAL H WITH STROKE..MODIFI A9E0..A9FE ; PVALID # MYANMAR LETTER SHAN GHA..MYANMAR LETTER TAI L AA7C..AA7F ; PVALID # MYANMAR SIGN TAI LAING TONE-2..MYANMAR LETTER AAE0..AAEF ; PVALID # MEETEI MAYEK LETTER E..MEETEI MAYEK VOWEL SIG AAF0..AAF1 ; DISALLOWED # MEETEI MAYEK CHEIKHAN..MEETEI MAYEK AHANG KHU AAF2..AAF6 ; PVALID # MEETEI MAYEK ANJI..MEETEI MAYEK VIRAMA AB30..AB5A ; PVALID # LATIN SMALL LETTER BARRED ALPHA..LATIN SMALL AB5B..AB5F ; DISALLOWED # MODIFIER BREVE WITH INVERTED BREVE..MODIFIER AB64..AB65 ; PVALID # LATIN SMALL LETTER INVERTED ALPHA..GREEK LETT FA2E..FA2F ; DISALLOWED # CJK COMPATIBILITY IDEOGRAPH-FA2E..CJK COMPATI FE27..FE2D ; PVALID # COMBINING LIGATURE LEFT HALF BELOW..COMBINING 1018B..1018C; DISALLOWED # GREEK ONE QUARTER SIGN..GREEK SINUSOID SIGN 101A0 ; DISALLOWED # GREEK SYMBOL TAU RHO 102E0 ; PVALID # COPTIC EPACT THOUSANDS MARK 102E1..102FB; DISALLOWED # COPTIC EPACT DIGIT ONE..COPTIC EPACT NUMBER N 1031F ; PVALID # OLD ITALIC LETTER ESS 10350..1037A; PVALID # OLD PERMIC LETTER AN..COMBINING OLD PERMIC LE 10500..10527; PVALID # ELBASAN LETTER A..ELBASAN LETTER KHE 10530..10563; PVALID # CAUCASIAN ALBANIAN LETTER ALT..CAUCASIAN ALBA 1056F ; DISALLOWED # CAUCASIAN ALBANIAN CITATION MARK 10600..10736; PVALID # LINEAR A SIGN AB001..LINEAR A SIGN A664 10740..10755; PVALID # LINEAR A SIGN A701 A..LINEAR A SIGN A732 JE 10760..10767; PVALID # LINEAR A SIGN A800..LINEAR A SIGN A807 10860..10876; PVALID # PALMYRENE LETTER ALEPH..PALMYRENE LETTER TAW 10877..1087F; DISALLOWED # PALMYRENE LEFT-POINTING FLEURON..PALMYRENE NU 10880..1089E; PVALID # NABATAEAN LETTER FINAL ALEPH..NABATAEAN LETTE 108A7..108AF; DISALLOWED # NABATAEAN NUMBER ONE..NABATAEAN NUMBER ONE HU 10980..109B7; PVALID # MEROITIC HIEROGLYPHIC LETTER A..MEROITIC CURS 109BE..109BF; PVALID # MEROITIC CURSIVE LOGOGRAM RMT..MEROITIC CURSI 10A80..10A9C; PVALID # OLD NORTH ARABIAN LETTER HEH..OLD NORTH ARABI 10A9D..10A9F; DISALLOWED # OLD NORTH ARABIAN NUMBER ONE..OLD NORTH ARABI 10AC0..10AC7; PVALID # MANICHAEAN LETTER ALEPH..MANICHAEAN LETTER WA 10AC8 ; DISALLOWED # MANICHAEAN SIGN UD 10AC9..10AE6; PVALID # MANICHAEAN LETTER ZAYIN..MANICHAEAN ABBREVIAT 10AEB..10AF6; DISALLOWED # MANICHAEAN NUMBER ONE..MANICHAEAN PUNCTUATION 10B80..10B91; PVALID # PSALTER PAHLAVI LETTER ALEPH..PSALTER PAHLAVI 10B99..10B9C; DISALLOWED # PSALTER PAHLAVI SECTION MARK..PSALTER PAHLAVI 10BA9..10BAF; DISALLOWED # PSALTER PAHLAVI NUMBER ONE..PSALTER PAHLAVI N 1107F ; PVALID # BRAHMI NUMBER JOINER 110D0..110E8; PVALID # SORA SOMPENG LETTER SAH..SORA SOMPENG LETTER 110F0..110F9; PVALID # SORA SOMPENG DIGIT ZERO..SORA SOMPENG DIGIT N 11100..11134; PVALID # CHAKMA SIGN CANDRABINDU..CHAKMA MAAYYAA 11136..1113F; PVALID # CHAKMA DIGIT ZERO..CHAKMA DIGIT NINE 11140..11143; DISALLOWED # CHAKMA SECTION MARK..CHAKMA QUESTION MARK 11150..11173; PVALID # MAHAJANI LETTER A..MAHAJANI SIGN NUKTA 11174..11175; DISALLOWED # MAHAJANI ABBREVIATION SIGN..MAHAJANI SECTION 11176 ; PVALID # MAHAJANI LIGATURE SHRI 11180..111C4; PVALID # SHARADA SIGN CANDRABINDU..SHARADA OM 111C5..111C8; DISALLOWED # SHARADA DANDA..SHARADA SEPARATOR 111CD ; DISALLOWED # SHARADA SUTRA MARK 111D0..111DA; PVALID # SHARADA DIGIT ZERO..SHARADA EKAM 111E1..111F4; DISALLOWED # SINHALA ARCHAIC DIGIT ONE..SINHALA ARCHAIC NU 11200..11211; PVALID # KHOJKI LETTER A..KHOJKI LETTER JJA 11213..11237; PVALID # KHOJKI LETTER NYA..KHOJKI SIGN SHADDA 11238..1123D; DISALLOWED # KHOJKI DANDA..KHOJKI ABBREVIATION SIGN 112B0..112EA; PVALID # KHUDAWADI LETTER A..KHUDAWADI SIGN VIRAMA 112F0..112F9; PVALID # KHUDAWADI DIGIT ZERO..KHUDAWADI DIGIT NINE 11301..11303; PVALID # GRANTHA SIGN CANDRABINDU..GRANTHA SIGN VISARG 11305..1130C; PVALID # GRANTHA LETTER A..GRANTHA LETTER VOCALIC L 1130F..11310; PVALID # GRANTHA LETTER EE..GRANTHA LETTER AI 11313..11328; PVALID # GRANTHA LETTER OO..GRANTHA LETTER NA 1132A..11330; PVALID # GRANTHA LETTER PA..GRANTHA LETTER RA 11332..11333; PVALID # GRANTHA LETTER LA..GRANTHA LETTER LLA 11335..11339; PVALID # GRANTHA LETTER VA..GRANTHA LETTER HA 1133C..11344; PVALID # GRANTHA SIGN NUKTA..GRANTHA VOWEL SIGN VOCALI 11347..11348; PVALID # GRANTHA VOWEL SIGN EE..GRANTHA VOWEL SIGN AI 1134B..1134D; PVALID # GRANTHA VOWEL SIGN OO..GRANTHA SIGN VIRAMA 11357 ; PVALID # GRANTHA AU LENGTH MARK 1135D..11363; PVALID # GRANTHA SIGN PLUTA..GRANTHA VOWEL SIGN VOCALI 11366..1136C; PVALID # COMBINING GRANTHA DIGIT ZERO..COMBINING GRANT 11370..11374; PVALID # COMBINING GRANTHA LETTER A..COMBINING GRANTHA 11480..114C5; PVALID # TIRHUTA ANJI..TIRHUTA GVANG 114C6 ; DISALLOWED # TIRHUTA ABBREVIATION SIGN 114C7 ; PVALID # TIRHUTA OM 114D0..114D9; PVALID # TIRHUTA DIGIT ZERO..TIRHUTA DIGIT NINE 11580..115B5; PVALID # SIDDHAM LETTER A..SIDDHAM VOWEL SIGN VOCALIC 115B8..115C0; PVALID # SIDDHAM VOWEL SIGN E..SIDDHAM SIGN NUKTA 115C1..115C9; DISALLOWED # SIDDHAM SIGN SIDDHAM..SIDDHAM END OF TEXT MAR 11600..11640; PVALID # MODI LETTER A..MODI SIGN ARDHACANDRA 11641..11643; DISALLOWED # MODI DANDA..MODI ABBREVIATION SIGN 11644 ; PVALID # MODI SIGN HUVA 11650..11659; PVALID # MODI DIGIT ZERO..MODI DIGIT NINE 11680..116B7; PVALID # TAKRI LETTER A..TAKRI SIGN NUKTA 116C0..116C9; PVALID # TAKRI DIGIT ZERO..TAKRI DIGIT NINE 118A0..118BF; DISALLOWED # WARANG CITI CAPITAL LETTER NGAA..WARANG CITI 118C0..118E9; PVALID # WARANG CITI SMALL LETTER NGAA..WARANG CITI DI 118EA..118F2; DISALLOWED # WARANG CITI NUMBER TEN..WARANG CITI NUMBER NI 118FF ; PVALID # WARANG CITI OM 11AC0..11AF8; PVALID # PAU CIN HAU LETTER PA..PAU CIN HAU GLOTTAL ST 1236F..12398; PVALID # CUNEIFORM SIGN KAP ELAMITE..CUNEIFORM SIGN UM 12463..1246E; DISALLOWED # CUNEIFORM NUMERIC SIGN ONE QUARTER GUR..CUNEI 12474 ; DISALLOWED # CUNEIFORM PUNCTUATION SIGN DIAGONAL QUADCOLON 16A40..16A5E; PVALID # MRO LETTER TA..MRO LETTER TEK 16A60..16A69; PVALID # MRO DIGIT ZERO..MRO DIGIT NINE 16A6E..16A6F; DISALLOWED # MRO DANDA..MRO DOUBLE DANDA 16AD0..16AED; PVALID # BASSA VAH LETTER ENNI..BASSA VAH LETTER I 16AF0..16AF4; PVALID # BASSA VAH COMBINING HIGH TONE..BASSA VAH COMB 16AF5 ; DISALLOWED # BASSA VAH FULL STOP 16B00..16B36; PVALID # PAHAWH HMONG VOWEL KEEB..PAHAWH HMONG MARK CI 16B37..16B3F; DISALLOWED # PAHAWH HMONG SIGN VOS THOM..PAHAWH HMONG SIGN 16B40..16B43; PVALID # PAHAWH HMONG SIGN VOS SEEV..PAHAWH HMONG SIGN 16B44..16B45; DISALLOWED # PAHAWH HMONG SIGN XAUS..PAHAWH HMONG SIGN CIM 16B50..16B59; PVALID # PAHAWH HMONG DIGIT ZERO..PAHAWH HMONG DIGIT N 16B5B..16B61; DISALLOWED # PAHAWH HMONG NUMBER TENS..PAHAWH HMONG NUMBER 16B63..16B77; PVALID # PAHAWH HMONG SIGN VOS LUB..PAHAWH HMONG SIGN 16B7D..16B8F; PVALID # PAHAWH HMONG CLAN SIGN TSHEEJ..PAHAWH HMONG C 16F00..16F44; PVALID # MIAO LETTER PA..MIAO LETTER HHA 16F50..16F7E; PVALID # MIAO LETTER NASALIZATION..MIAO VOWEL SIGN NG 16F8F..16F9F; PVALID # MIAO TONE RIGHT..MIAO LETTER REFORMED TONE-8 1BC00..1BC6A; PVALID # DUPLOYAN LETTER H..DUPLOYAN LETTER VOCALIC M 1BC70..1BC7C; PVALID # DUPLOYAN AFFIX LEFT HORIZONTAL SECANT..DUPLOY 1BC80..1BC88; PVALID # DUPLOYAN AFFIX HIGH ACUTE..DUPLOYAN AFFIX HIG 1BC90..1BC99; PVALID # DUPLOYAN AFFIX LOW ACUTE..DUPLOYAN AFFIX LOW 1BC9C ; DISALLOWED # DUPLOYAN SIGN O WITH CROSS 1BC9D..1BC9E; PVALID # DUPLOYAN THICK LETTER SELECTOR..DUPLOYAN DOUB 1BC9F..1BCA3; DISALLOWED # DUPLOYAN PUNCTUATION CHINOOK FULL STOP..SHORT 1E800..1E8C4; PVALID # MENDE KIKAKUI SYLLABLE M001 KI..MENDE KIKAKUI 1E8C7..1E8CF; DISALLOWED # MENDE KIKAKUI DIGIT ONE..MENDE KIKAKUI DIGIT 1E8D0..1E8D6; PVALID # MENDE KIKAKUI COMBINING NUMBER TEENS..MENDE K 1EE00..1EE03; DISALLOWED # ARABIC MATHEMATICAL ALEF..ARABIC MATHEMATICAL 1EE05..1EE1F; DISALLOWED # ARABIC MATHEMATICAL WAW..ARABIC MATHEMATICAL 1EE21..1EE22; DISALLOWED # ARABIC MATHEMATICAL INITIAL BEH..ARABIC MATHE 1EE24 ; DISALLOWED # ARABIC MATHEMATICAL INITIAL HEH 1EE27 ; DISALLOWED # ARABIC MATHEMATICAL INITIAL HAH 1EE29..1EE32; DISALLOWED # ARABIC MATHEMATICAL INITIAL YEH..ARABIC MATHE 1EE34..1EE37; DISALLOWED # ARABIC MATHEMATICAL INITIAL SHEEN..ARABIC MAT 1EE39 ; DISALLOWED # ARABIC MATHEMATICAL INITIAL DAD 1EE3B ; DISALLOWED # ARABIC MATHEMATICAL INITIAL GHAIN 1EE42 ; DISALLOWED # ARABIC MATHEMATICAL TAILED JEEM 1EE47 ; DISALLOWED # ARABIC MATHEMATICAL TAILED HAH 1EE49 ; DISALLOWED # ARABIC MATHEMATICAL TAILED YEH 1EE4B ; DISALLOWED # ARABIC MATHEMATICAL TAILED LAM 1EE4D..1EE4F; DISALLOWED # ARABIC MATHEMATICAL TAILED NOON..ARABIC MATHE 1EE51..1EE52; DISALLOWED # ARABIC MATHEMATICAL TAILED SAD..ARABIC MATHEM 1EE54 ; DISALLOWED # ARABIC MATHEMATICAL TAILED SHEEN 1EE57 ; DISALLOWED # ARABIC MATHEMATICAL TAILED KHAH 1EE59 ; DISALLOWED # ARABIC MATHEMATICAL TAILED DAD 1EE5B ; DISALLOWED # ARABIC MATHEMATICAL TAILED GHAIN 1EE5D ; DISALLOWED # ARABIC MATHEMATICAL TAILED DOTLESS NOON 1EE5F ; DISALLOWED # ARABIC MATHEMATICAL TAILED DOTLESS QAF 1EE61..1EE62; DISALLOWED # ARABIC MATHEMATICAL STRETCHED BEH..ARABIC MAT 1EE64 ; DISALLOWED # ARABIC MATHEMATICAL STRETCHED HEH 1EE67..1EE6A; DISALLOWED # ARABIC MATHEMATICAL STRETCHED HAH..ARABIC MAT 1EE6C..1EE72; DISALLOWED # ARABIC MATHEMATICAL STRETCHED MEEM..ARABIC MA 1EE74..1EE77; DISALLOWED # ARABIC MATHEMATICAL STRETCHED SHEEN..ARABIC M 1EE79..1EE7C; DISALLOWED # ARABIC MATHEMATICAL STRETCHED DAD..ARABIC MAT 1EE7E ; DISALLOWED # ARABIC MATHEMATICAL STRETCHED DOTLESS FEH 1EE80..1EE89; DISALLOWED # ARABIC MATHEMATICAL LOOPED ALEF..ARABIC MATHE 1EE8B..1EE9B; DISALLOWED # ARABIC MATHEMATICAL LOOPED LAM..ARABIC MATHEM 1EEA1..1EEA3; DISALLOWED # ARABIC MATHEMATICAL DOUBLE-STRUCK BEH..ARABIC 1EEA5..1EEA9; DISALLOWED # ARABIC MATHEMATICAL DOUBLE-STRUCK WAW..ARABIC 1EEAB..1EEBB; DISALLOWED # ARABIC MATHEMATICAL DOUBLE-STRUCK LAM..ARABIC 1EEF0..1EEF1; DISALLOWED # ARABIC MATHEMATICAL OPERATOR MEEM WITH HAH WI 1F0BF ; DISALLOWED # PLAYING CARD RED JOKER 1F0E0..1F0F5; DISALLOWED # PLAYING CARD FOOL..PLAYING CARD TRUMP-21 1F10B..1F10C; DISALLOWED # DINGBAT CIRCLED SANS-SERIF DIGIT ZERO..DINGBA 1F16A..1F16B; DISALLOWED # RAISED MC SIGN..RAISED MD SIGN 1F321..1F32C; DISALLOWED # THERMOMETER..WIND BLOWING FACE 1F336 ; DISALLOWED # HOT PEPPER 1F37D ; DISALLOWED # FORK AND KNIFE WITH PLATE 1F394..1F39F; DISALLOWED # HEART WITH TIP ON THE LEFT..ADMISSION TICKETS 1F3C5 ; DISALLOWED # SPORTS MEDAL 1F3CB..1F3CE; DISALLOWED # WEIGHT LIFTER..RACING CAR 1F3D4..1F3DF; DISALLOWED # SNOW CAPPED MOUNTAIN..STADIUM 1F3F1..1F3F7; DISALLOWED # WHITE PENNANT..LABEL 1F43F ; DISALLOWED # CHIPMUNK 1F441 ; DISALLOWED # EYE 1F4F8 ; DISALLOWED # CAMERA WITH FLASH 1F4FD..1F4FE; DISALLOWED # FILM PROJECTOR..PORTABLE STEREO 1F53E..1F54A; DISALLOWED # LOWER RIGHT SHADOWED WHITE CIRCLE..DOVE OF PE 1F568..1F579; DISALLOWED # RIGHT SPEAKER..JOYSTICK 1F57B..1F5A3; DISALLOWED # LEFT HAND TELEPHONE RECEIVER..BLACK DOWN POIN 1F5A5..1F5FA; DISALLOWED # DESKTOP COMPUTER..WORLD MAP 1F600 ; DISALLOWED # GRINNING FACE 1F611 ; DISALLOWED # EXPRESSIONLESS FACE 1F615 ; DISALLOWED # CONFUSED FACE 1F617 ; DISALLOWED # KISSING FACE 1F619 ; DISALLOWED # KISSING FACE WITH SMILING EYES 1F61B ; DISALLOWED # FACE WITH STUCK-OUT TONGUE 1F61F ; DISALLOWED # WORRIED FACE 1F626..1F627; DISALLOWED # FROWNING FACE WITH OPEN MOUTH..ANGUISHED FACE 1F62C ; DISALLOWED # GRIMACING FACE 1F62E..1F62F; DISALLOWED # FACE WITH OPEN MOUTH..HUSHED FACE 1F634 ; DISALLOWED # SLEEPING FACE 1F641..1F642; DISALLOWED # SLIGHTLY FROWNING FACE..SLIGHTLY SMILING FACE 1F650..1F67F; DISALLOWED # NORTH WEST POINTING LEAF..REVERSE CHECKER BOA 1F6C6..1F6CF; DISALLOWED # TRIANGLE WITH ROUNDED CORNERS..BED 1F6E0..1F6EC; DISALLOWED # HAMMER AND WRENCH..AIRPLANE ARRIVING 1F6F0..1F6F3; DISALLOWED # SATELLITE..PASSENGER SHIP 1F780..1F7D4; DISALLOWED # BLACK LEFT-POINTING ISOSCELES RIGHT TRIANGLE. 1F800..1F80B; DISALLOWED # LEFTWARDS ARROW WITH SMALL TRIANGLE ARROWHEAD 1F810..1F847; DISALLOWED # LEFTWARDS ARROW WITH SMALL EQUILATERAL ARROWH 1F850..1F859; DISALLOWED # LEFTWARDS SANS-SERIF ARROW..UP DOWN SANS-SERI 1F860..1F887; DISALLOWED # WIDE-HEADED LEFTWARDS LIGHT BARB ARROW..WIDE- 1F890..1F8AD; DISALLOWED # LEFTWARDS TRIANGLE ARROWHEAD..WHITE ARROW SHA Appendix B. Changes from Unicode 7.0.0 to Unicode 8.0.0 Changes from derived property value UNASSIGNED to either PVALID or DISALLOWED. 08B3..08B4 ; PVALID # ARABIC LETTER AIN WITH THREE DOTS BELOW..ARAB 08E3 ; PVALID # ARABIC TURNED DAMMA BELOW 0AF9 ; PVALID # GUJARATI LETTER ZHA 0C5A ; PVALID # TELUGU LETTER RRRA 0D5F ; PVALID # MALAYALAM LETTER ARCHAIC II 13F5 ; PVALID # CHEROKEE LETTER MV 13F8..13FD ; DISALLOWED # CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETT 20BE ; DISALLOWED # LARI SIGN 218A..218B ; DISALLOWED # TURNED DIGIT TWO..TURNED DIGIT THREE 2BEC..2BEF ; DISALLOWED # LEFTWARDS TWO-HEADED ARROW WITH TRIANGLE ARRO 9FCD..9FD5 ; PVALID # .. A69E ; PVALID # COMBINING CYRILLIC LETTER EF A78F ; PVALID # LATIN LETTER SINOLOGICAL DOT A7B2..A7B4 ; DISALLOWED # LATIN CAPITAL LETTER J WITH CROSSED-TAIL..LAT A7B5 ; PVALID # LATIN SMALL LETTER BETA A7B6 ; DISALLOWED # LATIN CAPITAL LETTER OMEGA A7B7 ; PVALID # LATIN SMALL LETTER OMEGA A8FC ; DISALLOWED # DEVANAGARI SIGN SIDDHAM A8FD ; PVALID # DEVANAGARI JAIN OM AB60..AB63 ; PVALID # LATIN SMALL LETTER SAKHA YAT..LATIN SMALL LET AB70..ABBF ; DISALLOWED # CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTE FE2E..FE2F ; PVALID # COMBINING CYRILLIC TITLO LEFT HALF..COMBINING 108E0..108F2; PVALID # HATRAN LETTER ALEPH..HATRAN LETTER QOPH 108F4..108F5; PVALID # HATRAN LETTER SHIN..HATRAN LETTER TAW 108FB..108FF; DISALLOWED # HATRAN NUMBER ONE..HATRAN NUMBER ONE HUNDRED 109BC..109BD; DISALLOWED # MEROITIC CURSIVE FRACTION ELEVEN TWELFTHS..ME 109C0..109CF; DISALLOWED # MEROITIC CURSIVE NUMBER ONE..MEROITIC CURSIVE 109D2..109FF; DISALLOWED # MEROITIC CURSIVE NUMBER ONE HUNDRED..MEROITIC 10C80..10CB2; DISALLOWED # OLD HUNGARIAN CAPITAL LETTER A..OLD HUNGARIAN 10CC0..10CF2; PVALID # OLD HUNGARIAN SMALL LETTER A..OLD HUNGARIAN S 10CFA..10CFF; DISALLOWED # OLD HUNGARIAN NUMBER ONE..OLD HUNGARIAN NUMBE 111C9 ; DISALLOWED # SHARADA SANDHI MARK 111CA..111CC; PVALID # SHARADA SIGN NUKTA..SHARADA EXTRA SHORT VOWEL 111DB ; DISALLOWED # SHARADA SIGN SIDDHAM 111DC ; PVALID # SHARADA HEADSTROKE 111DD..111DF; DISALLOWED # SHARADA CONTINUATION SIGN..SHARADA SECTION MA 11280..11286; PVALID # MULTANI LETTER A..MULTANI LETTER GA 11288 ; PVALID # MULTANI LETTER GHA 1128A..1128D; PVALID # MULTANI LETTER CA..MULTANI LETTER JJA 1128F..1129D; PVALID # MULTANI LETTER NYA..MULTANI LETTER BA 1129F..112A8; PVALID # MULTANI LETTER BHA..MULTANI LETTER RHA 112A9 ; DISALLOWED # MULTANI SECTION MARK 11300 ; PVALID # GRANTHA SIGN COMBINING ANUSVARA ABOVE 11350 ; PVALID # GRANTHA OM 115CA..115D7; DISALLOWED # SIDDHAM SECTION MARK WITH TRIDENT AND U-SHAPE 115D8..115DD; PVALID # SIDDHAM LETTER THREE-CIRCLE ALTERNATE I..SIDD 11700..11719; PVALID # AHOM LETTER KA..AHOM LETTER JHA 1171D..1172B; PVALID # AHOM CONSONANT SIGN MEDIAL LA..AHOM SIGN KILL 11730..11739; PVALID # AHOM DIGIT ZERO..AHOM DIGIT NINE 1173A..1173F; DISALLOWED # AHOM NUMBER TEN..AHOM SYMBOL VI 12399 ; PVALID # CUNEIFORM SIGN U U 12480..12543; PVALID # CUNEIFORM SIGN AB TIMES NUN TENU..CUNEIFORM S 14400..14646; PVALID # ANATOLIAN HIEROGLYPH A001..ANATOLIAN HIEROGLY 1D1DE..1D1E8; DISALLOWED # MUSICAL SYMBOL KIEVAN C CLEF..MUSICAL SYMBOL 1D800..1D9FF; DISALLOWED # SIGNWRITING HAND-FIST INDEX..SIGNWRITING HEAD 1DA00..1DA36; PVALID # SIGNWRITING HEAD RIM..SIGNWRITING AIR SUCKING 1DA37..1DA3A; DISALLOWED # SIGNWRITING AIR BLOW SMALL ROTATIONS..SIGNWRI 1DA3B..1DA6C; PVALID # SIGNWRITING MOUTH CLOSED NEUTRAL..SIGNWRITING 1DA6D..1DA74; DISALLOWED # SIGNWRITING SHOULDER HIP SPINE..SIGNWRITING T 1DA75 ; PVALID # SIGNWRITING UPPER BODY TILTING FROM HIP JOINT 1DA76..1DA83; DISALLOWED # SIGNWRITING LIMB COMBINATION..SIGNWRITING LOC 1DA84 ; PVALID # SIGNWRITING LOCATION HEAD NECK 1DA85..1DA8B; DISALLOWED # SIGNWRITING LOCATION TORSO..SIGNWRITING PAREN 1DA9B..1DA9F; PVALID # SIGNWRITING FILL MODIFIER-2..SIGNWRITING FILL 1DAA1..1DAAF; PVALID # SIGNWRITING ROTATION MODIFIER-2..SIGNWRITING 1F32D..1F32F; DISALLOWED # HOT DOG..BURRITO 1F37E..1F37F; DISALLOWED # BOTTLE WITH POPPING CORK..POPCORN 1F3CF..1F3D3; DISALLOWED # CRICKET BAT AND BALL..TABLE TENNIS PADDLE AND 1F3F8..1F3FF; DISALLOWED # BADMINTON RACQUET AND SHUTTLECOCK..EMOJI MODI 1F4FF ; DISALLOWED # PRAYER BEADS 1F54B..1F54F; DISALLOWED # KAABA..BOWL OF HYGIEIA 1F643..1F644; DISALLOWED # UPSIDE-DOWN FACE..FACE WITH ROLLING EYES 1F6D0 ; DISALLOWED # PLACE OF WORSHIP 1F910..1F918; DISALLOWED # ZIPPER-MOUTH FACE..SIGN OF THE HORNS 1F980..1F984; DISALLOWED # CRAB..UNICORN FACE 1F9C0 ; DISALLOWED # CHEESE WEDGE 2B820..2CEA1; PVALID # .... 18800..18AF2; PVALID # TANGUT COMPONENT-001..TANGUT COMPONENT-755 1E000..1E006; PVALID # COMBINING GLAGOLITIC LETTER AZU..COMBINING GL 1E008..1E018; PVALID # COMBINING GLAGOLITIC LETTER ZEMLJA..COMBINING 1E01B..1E021; PVALID # COMBINING GLAGOLITIC LETTER SHTA..COMBINING G 1E023..1E024; PVALID # COMBINING GLAGOLITIC LETTER YU..COMBINING GLA 1E026..1E02A; PVALID # COMBINING GLAGOLITIC LETTER YO..COMBINING GLA 1E900..1E921; DISALLOWED # ADLAM CAPITAL LETTER ALIF..ADLAM CAPITAL LETT 1E922..1E94A; PVALID # ADLAM SMALL LETTER ALIF..ADLAM NUKTA 1E950..1E959; PVALID # ADLAM DIGIT ZERO..ADLAM DIGIT NINE 1E95E..1E95F; DISALLOWED # ADLAM INITIAL EXCLAMATION MARK..ADLAM INITIAL 1F19B..1F1AC; DISALLOWED # SQUARED THREE D..SQUARED VOD 1F23B ; DISALLOWED # SQUARED CJK UNIFIED IDEOGRAPH-914D 1F57A ; DISALLOWED # MAN DANCING 1F5A4 ; DISALLOWED # BLACK HEART 1F6D1..1F6D2; DISALLOWED # OCTAGONAL SIGN..SHOPPING TROLLEY 1F6F4..1F6F6; DISALLOWED # SCOOTER..CANOE 1F919..1F91E; DISALLOWED # CALL ME HAND..HAND WITH INDEX AND MIDDLE FING 1F920..1F927; DISALLOWED # FACE WITH COWBOY HAT..SNEEZING FACE 1F930 ; DISALLOWED # PREGNANT WOMAN 1F933..1F93E; DISALLOWED # SELFIE..HANDBALL 1F940..1F94B; DISALLOWED # WILTED FLOWER..MARTIAL ARTS UNIFORM 1F950..1F95E; DISALLOWED # CROISSANT..PANCAKES 1F985..1F991; DISALLOWED # EAGLE..SQUID Appendix D. Changes from Unicode 9.0.0 to Unicode 10.0.0 Changes from derived property value UNASSIGNED to either PVALID or DISALLOWED. 0860..086A ; PVALID # SYRIAC LETTER MALAYALAM NGA..SYRIAC LETTER MA 09FC ; PVALID # BENGALI LETTER VEDIC ANUSVARA 09FD ; DISALLOWED # BENGALI ABBREVIATION SIGN 0AFA..0AFF ; PVALID # GUJARATI SIGN SUKUN..GUJARATI SIGN TWO-CIRCLE 0D00 ; PVALID # MALAYALAM SIGN COMBINING ANUSVARA ABOVE 0D3B..0D3C ; PVALID # MALAYALAM SIGN VERTICAL BAR VIRAMA..MALAYALAM 1CF7 ; PVALID # VEDIC SIGN ATIKRAMA 1DF6..1DF9 ; PVALID # COMBINING KAVYKA ABOVE RIGHT..COMBINING WIDE 20BF ; DISALLOWED # BITCOIN SIGN 23FF ; DISALLOWED # OBSERVER EYE SYMBOL 2BD2 ; DISALLOWED # GROUP MARK 2E45..2E49 ; DISALLOWED # INVERTED LOW KAVYKA..DOUBLE STACKED COMMA 312E ; PVALID # BOPOMOFO LETTER O WITH DOT ABOVE 9FD6..9FEA ; PVALID # .. 1032D..1032F; PVALID # OLD ITALIC LETTER YE..OLD ITALIC LETTER SOUTH 11A00..11A3E; PVALID # ZANABAZAR SQUARE LETTER A..ZANABAZAR SQUARE C 11A3F..11A46; DISALLOWED # ZANABAZAR SQUARE INITIAL HEAD MARK..ZANABAZAR 11A47 ; PVALID # ZANABAZAR SQUARE SUBJOINER 11A50..11A83; PVALID # SOYOMBO LETTER A..SOYOMBO LETTER KSSA 11A86..11A99; PVALID # SOYOMBO CLUSTER-INITIAL LETTER RA..SOYOMBO SU 11A9A..11A9C; DISALLOWED # SOYOMBO MARK TSHEG..SOYOMBO MARK DOUBLE SHAD 11A9E..11AA2; DISALLOWED # SOYOMBO HEAD MARK WITH MOON AND SUN AND TRIPL 11D00..11D06; PVALID # MASARAM GONDI LETTER A..MASARAM GONDI LETTER 11D08..11D09; PVALID # MASARAM GONDI LETTER AI..MASARAM GONDI LETTER 11D0B..11D36; PVALID # MASARAM GONDI LETTER AU..MASARAM GONDI VOWEL 11D3A ; PVALID # MASARAM GONDI VOWEL SIGN E 11D3C..11D3D; PVALID # MASARAM GONDI VOWEL SIGN AI..MASARAM GONDI VO 11D3F..11D47; PVALID # MASARAM GONDI VOWEL SIGN AU..MASARAM GONDI RA 11D50..11D59; PVALID # MASARAM GONDI DIGIT ZERO..MASARAM GONDI DIGIT 16FE1 ; PVALID # NUSHU ITERATION MARK 1B002..1B11E; PVALID # HENTAIGANA LETTER A-1..HENTAIGANA LETTER N-MU 1B170..1B2FB; PVALID # NUSHU CHARACTER-1B170..NUSHU CHARACTER-1B2FB 1F260..1F265; DISALLOWED # ROUNDED SYMBOL FOR FU..ROUNDED SYMBOL FOR CAI 1F6D3..1F6D4; DISALLOWED # STUPA..PAGODA 1F6F7..1F6F8; DISALLOWED # SLED..FLYING SAUCER 1F900..1F90B; DISALLOWED # CIRCLED CROSS FORMEE WITH FOUR DOTS..DOWNWARD 1F91F ; DISALLOWED # I LOVE YOU HAND SIGN 1F928..1F92F; DISALLOWED # FACE WITH ONE EYEBROW RAISED..SHOCKED FACE WI 1F931..1F932; DISALLOWED # BREAST-FEEDING..PALMS UP TOGETHER 1F94C ; DISALLOWED # CURLING STONE 1F95F..1F96B; DISALLOWED # DUMPLING..CANNED FOOD 1F992..1F997; DISALLOWED # GIRAFFE FACE..CRICKET 1F9D0..1F9E6; DISALLOWED # FACE WITH MONOCLE..SOCKS 2CEB0..2EBE0; PVALID # .... A7AF ; PVALID # LATIN LETTER SMALL CAPITAL Q A7B8 ; DISALLOWED # LATIN CAPITAL LETTER U WITH STROKE A7B9 ; PVALID # LATIN SMALL LETTER U WITH STROKE A8FE..A8FF ; PVALID # DEVANAGARI LETTER AY..DEVANAGARI VOWEL SIGN A 10A34..10A35; PVALID # KHAROSHTHI LETTER TTTA..KHAROSHTHI LETTER VHA 10A48 ; DISALLOWED # KHAROSHTHI FRACTION ONE HALF 10D00..10D27; PVALID # HANIFI ROHINGYA LETTER A..HANIFI ROHINGYA SIG 10D30..10D39; PVALID # HANIFI ROHINGYA DIGIT ZERO..HANIFI ROHINGYA D 10F00..10F1C; PVALID # OLD SOGDIAN LETTER ALEPH..OLD SOGDIAN LETTER 10F1D..10F26; DISALLOWED # OLD SOGDIAN NUMBER ONE..OLD SOGDIAN FRACTION 10F27 ; PVALID # OLD SOGDIAN LIGATURE AYIN-DALETH 10F30..10F50; PVALID # SOGDIAN LETTER ALEPH..SOGDIAN COMBINING STROK 10F51..10F59; DISALLOWED # SOGDIAN NUMBER ONE..SOGDIAN PUNCTUATION HALF 110CD ; DISALLOWED # KAITHI NUMBER SIGN ABOVE 11144..11146; PVALID # CHAKMA LETTER LHAA..CHAKMA VOWEL SIGN EI 1133B ; PVALID # COMBINING BINDU BELOW 1145E ; PVALID # NEWA SANDHI MARK 1171A ; PVALID # AHOM LETTER ALTERNATE BA 11800..1183A; PVALID # DOGRA LETTER A..DOGRA SIGN NUKTA 1183B ; DISALLOWED # DOGRA ABBREVIATION SIGN 11A9D ; PVALID # SOYOMBO MARK PLUTA 11D60..11D65; PVALID # GUNJALA GONDI LETTER A..GUNJALA GONDI LETTER 11D67..11D68; PVALID # GUNJALA GONDI LETTER EE..GUNJALA GONDI LETTER 11D6A..11D8E; PVALID # GUNJALA GONDI LETTER OO..GUNJALA GONDI VOWEL 11D90..11D91; PVALID # GUNJALA GONDI VOWEL SIGN EE..GUNJALA GONDI VO 11D93..11D98; PVALID # GUNJALA GONDI VOWEL SIGN OO..GUNJALA GONDI OM 11DA0..11DA9; PVALID # GUNJALA GONDI DIGIT ZERO..GUNJALA GONDI DIGIT 11EE0..11EF6; PVALID # MAKASAR LETTER KA..MAKASAR VOWEL SIGN O 11EF7..11EF8; DISALLOWED # MAKASAR PASSIMBANG..MAKASAR END OF SECTION 16E40..16E5F; DISALLOWED # MEDEFAIDRIN CAPITAL LETTER M..MEDEFAIDRIN CAP 16E60..16E7F; PVALID # MEDEFAIDRIN SMALL LETTER M..MEDEFAIDRIN SMALL 16E80..16E9A; DISALLOWED # MEDEFAIDRIN DIGIT ZERO..MEDEFAIDRIN EXCLAMATI 187ED..187F1; PVALID # .. 1D2E0..1D2F3; DISALLOWED # MAYAN NUMERAL ZERO..MAYAN NUMERAL NINETEEN 1D372..1D378; DISALLOWED # IDEOGRAPHIC TALLY MARK ONE..TALLY MARK FIVE 1EC71..1ECB4; DISALLOWED # INDIC SIYAQ NUMBER ONE..INDIC SIYAQ ALTERNATE 1F12F ; DISALLOWED # COPYLEFT SYMBOL 1F6F9 ; DISALLOWED # SKATEBOARD 1F7D5..1F7D8; DISALLOWED # CIRCLED TRIANGLE..NEGATIVE CIRCLED SQUARE 1F94D..1F94F; DISALLOWED # LACROSSE STICK AND BALL..FLYING DISC 1F96C..1F970; DISALLOWED # LEAFY GREEN..SMILING FACE WITH SMILING EYES A 1F973..1F976; DISALLOWED # FACE WITH PARTY HORN AND PARTY HAT..FREEZING 1F97A ; DISALLOWED # FACE WITH PLEADING EYES 1F97C..1F97F; DISALLOWED # LAB COAT..FLAT SHOE 1F998..1F9A2; DISALLOWED # KANGAROO..SWAN 1F9B0..1F9B9; DISALLOWED # EMOJI COMPONENT RED HAIR..SUPERVILLAIN 1F9C1..1F9C2; DISALLOWED # CUPCAKE..SALT SHAKER 1F9E7..1F9FF; DISALLOWED # RED GIFT ENVELOPE..NAZAR AMULET 1FA60..1FA6D; DISALLOWED # XIANGQI RED GENERAL..XIANGQI BLACK SOLDIER Appendix F. Changes from Unicode 11.0.0 to Unicode 12.0.0 Changes from derived property value UNASSIGNED to either PVALID or DISALLOWED. 0C77 ; DISALLOWED # TELUGU SIGN SIDDHAM 0E86 ; PVALID # LAO LETTER PALI GHA 0E89 ; PVALID # LAO LETTER PALI CHA 0E8C ; PVALID # LAO LETTER PALI JHA 0E8E..0E93 ; PVALID # LAO LETTER PALI NYA..LAO LETTER PALI NNA 0E98 ; PVALID # LAO LETTER PALI DHA 0EA0 ; PVALID # LAO LETTER PALI BHA 0EA8..0EA9 ; PVALID # LAO LETTER SANSKRIT SHA..LAO LETTER SANSKRIT 0EAC ; PVALID # LAO LETTER PALI LLA 0EBA ; PVALID # LAO SIGN PALI VIRAMA 1CFA ; PVALID # VEDIC SIGN DOUBLE ANUSVARA ANTARGOMUKHA 2BC9 ; DISALLOWED # NEPTUNE FORM TWO 2BFF ; DISALLOWED # HELLSCHREIBER PAUSE SYMBOL 2E4F ; DISALLOWED # CORNISH VERSE DIVIDER A7BA ; DISALLOWED # LATIN CAPITAL LETTER GLOTTAL A A7BB ; PVALID # LATIN SMALL LETTER GLOTTAL A A7BC ; DISALLOWED # LATIN CAPITAL LETTER GLOTTAL I A7BD ; PVALID # LATIN SMALL LETTER GLOTTAL I A7BE ; DISALLOWED # LATIN CAPITAL LETTER GLOTTAL U A7BF ; PVALID # LATIN SMALL LETTER GLOTTAL U A7C2 ; DISALLOWED # LATIN CAPITAL LETTER ANGLICANA W A7C3 ; PVALID # LATIN SMALL LETTER ANGLICANA W A7C4..A7C6 ; DISALLOWED # LATIN CAPITAL LETTER C WITH PALATAL HOOK..LAT AB66..AB67 ; PVALID # LATIN SMALL LETTER DZ DIGRAPH WITH RETROFLEX 10FE0..10FF6; PVALID # ELYMAIC LETTER ALEPH..ELYMAIC LIGATURE ZAYIN- 1145F ; PVALID # NEWA LETTER VEDIC ANUSVARA 116B8 ; PVALID # TAKRI LETTER ARCHAIC KHA 119A0..119A7; PVALID # NANDINAGARI LETTER A..NANDINAGARI LETTER VOCA 119AA..119D7; PVALID # NANDINAGARI LETTER E..NANDINAGARI VOWEL SIGN 119DA..119E1; PVALID # NANDINAGARI VOWEL SIGN E..NANDINAGARI SIGN AV 119E2 ; DISALLOWED # NANDINAGARI SIGN SIDDHAM 119E3..119E4; PVALID # NANDINAGARI HEADSTROKE..NANDINAGARI VOWEL SIG 11A84..11A85; PVALID # SOYOMBO SIGN JIHVAMULIYA..SOYOMBO SIGN UPADHM 11FC0..11FF1; DISALLOWED # TAMIL FRACTION ONE THREE-HUNDRED-AND-TWENTIET 11FFF ; DISALLOWED # TAMIL PUNCTUATION END OF TEXT 13430..13438; DISALLOWED # EGYPTIAN HIEROGLYPH VERTICAL JOINER..EGYPTIAN 16F45..16F4A; PVALID # MIAO LETTER BRI..MIAO LETTER RTE 16F4F ; PVALID # MIAO SIGN CONSONANT MODIFIER BAR 16F7F..16F87; PVALID # MIAO VOWEL SIGN UOG..MIAO VOWEL SIGN UI 16FE2 ; DISALLOWED # OLD CHINESE HOOK MARK 16FE3 ; PVALID # OLD CHINESE ITERATION MARK 187F2..187F7; PVALID # .. 1B150..1B152; PVALID # HIRAGANA LETTER SMALL WI..HIRAGANA LETTER SMA 1B164..1B167; PVALID # KATAKANA LETTER SMALL WI..KATAKANA LETTER SMA 1E100..1E12C; PVALID # NYIAKENG PUACHUE HMONG LETTER MA..NYIAKENG PU 1E130..1E13D; PVALID # NYIAKENG PUACHUE HMONG TONE-B..NYIAKENG PUACH 1E140..1E149; PVALID # NYIAKENG PUACHUE HMONG DIGIT ZERO..NYIAKENG P 1E14E ; PVALID # NYIAKENG PUACHUE HMONG LOGOGRAM NYAJ 1E14F ; DISALLOWED # NYIAKENG PUACHUE HMONG CIRCLED CA 1E2C0..1E2F9; PVALID # WANCHO LETTER AA..WANCHO DIGIT NINE 1E2FF ; DISALLOWED # WANCHO NGUN SIGN 1E94B ; PVALID # ADLAM NASALIZATION MARK 1ED01..1ED3D; DISALLOWED # OTTOMAN SIYAQ NUMBER ONE..OTTOMAN SIYAQ FRACT 1F16C ; DISALLOWED # RAISED MR SIGN 1F6D5 ; DISALLOWED # HINDU TEMPLE 1F6FA ; DISALLOWED # AUTO RICKSHAW 1F7E0..1F7EB; DISALLOWED # LARGE ORANGE CIRCLE..LARGE BROWN SQUARE 1F90D..1F90F; DISALLOWED # WHITE HEART..PINCHING HAND 1F93F ; DISALLOWED # DIVING MASK 1F971 ; DISALLOWED # YAWNING FACE 1F97B ; DISALLOWED # SARI 1F9A5..1F9AA; DISALLOWED # SLOTH..OYSTER 1F9AE..1F9AF; DISALLOWED # GUIDE DOG..PROBING CANE 1F9BA..1F9BF; DISALLOWED # SAFETY VEST..MECHANICAL LEG 1F9C3..1F9CA; DISALLOWED # BEVERAGE BOX..ICE CUBE 1F9CD..1F9CF; DISALLOWED # STANDING PERSON..DEAF PERSON 1FA00..1FA53; DISALLOWED # NEUTRAL CHESS KING..BLACK CHESS KNIGHT-BISHOP 1FA70..1FA73; DISALLOWED # BALLET SHOES..SHORTS 1FA78..1FA7A; DISALLOWED # DROP OF BLOOD..STETHOSCOPE 1FA80..1FA82; DISALLOWED # YO-YO..PARACHUTE 1FA90..1FA95; DISALLOWED # RINGED PLANET..BANJO Acknowledgments Thanks to Harald Alvestrand, Marc Blanchet, Martin Dürst, Asmus Freytag, Ted Hardie, John Klensin, Erik Nordmark, Pete Resnick, Peter Saint-Andre, Michel Suignard, Andrew Sullivan, and Suzanne Woolf for input to this document. Author's Address Patrik Fältström Netnod Email: paf@netnod.se