PRECIS                                                    P. Saint-Andre
Internet-Draft                                       Cisco Systems, Inc.
Obsoletes: 3454 (if approved)                                M. Blanchet
Intended status: Standards Track                                Viagenie
Expires: March September 27, 2013                               September 23, 2012                               March 26, 2013

   PRECIS Framework: Preparation and Comparison of Internationalized
                    Strings in Application Protocols
                     draft-ietf-precis-framework-06
                     draft-ietf-precis-framework-07

Abstract

   Application protocols using Unicode code points in protocol strings
   need to properly prepare such strings in order to perform valid
   comparison operations (e.g., for purposes of authentication or
   authorization).  This document defines a framework enabling
   application protocols to perform the preparation and comparison of
   internationalized strings (a.k.a.  "PRECIS") in a way that depends on
   the properties of Unicode code points and thus is agile with respect
   to versions of Unicode.  As a result, this framework provides a more
   sustainable approach to the handling of internationalized strings
   than the previous framework, known as Stringprep (RFC 3454).  A
   specification that reuses this framework can either directly use the base
   PRECIS string classes or subclass the base PRECIS string classes as
   needed.  This framework takes an approach similar to the revised
   internationalized domain names (IDNs) in applications (IDNA)
   technology (RFC 5890, RFC 5891, RFC 5892, RFC 5893, RFC 5894) and
   thus adheres to the high-level design goals described in RFC 4690, the IAB's
   recommendations regarding IDNs (RFC 4690), albeit for application
   technologies other than the Domain Name System (DNS).  This document
   obsoletes RFC 3454.

Status of this This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on March September 27, 2013.

Copyright Notice

   Copyright (c) 2012 2013 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  4   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  String Classes  . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.2.  NameClass  . . .  IdentifierClass . . . . . . . . . . . . . . . . . . . . .   7
       3.2.1.  Valid  . .
     3.3.  FreeformClass . . . . . . . . . . . . . . . . . . . . . .  7
       3.2.2.  Disallowed   9
   4.  Use of PRECIS String Classes  . . . . . . . . . . . . . . . .  11
     4.1.  Principles  . . . . . .  8
       3.2.3.  Unassigned . . . . . . . . . . . . . . . . .  11
     4.2.  Subclassing . . . . .  8
       3.2.4.  Normalization . . . . . . . . . . . . . . . . . .  11
     4.3.  Building Application-Layer Constructs . .  8
       3.2.5.  Casemapping . . . . . . . .  12
     4.4.  A Note about Spaces . . . . . . . . . . . . .  8
       3.2.6.  Additional Mappings . . . . . .  13
   5.  Code Point Properties . . . . . . . . . . .  8
       3.2.7.  Directionality . . . . . . . . .  13
   6.  Category Definitions Used to Calculate Derived Property Value  15
     6.1.  LetterDigits (A)  . . . . . . . . . . .  8
     3.3.  FreeClass . . . . . . . . .  16
     6.2.  Unstable (B)  . . . . . . . . . . . . . . .  9
       3.3.1.  Valid . . . . . . .  16
     6.3.  IgnorableProperties (C) . . . . . . . . . . . . . . . . .  9
       3.3.2.  Disallowed  16
     6.4.  IgnorableBlocks (D) . . . . . . . . . . . . . . . . . . .  17
     6.5.  LDH (E) . . .  9
       3.3.3.  Unassigned . . . . . . . . . . . . . . . . . . . . . .  9
       3.3.4.  Normalization  17
     6.6.  Exceptions (F)  . . . . . . . . . . . . . . . . . . . .  9
       3.3.5.  Casemapping .  17
     6.7.  BackwardCompatible (G)  . . . . . . . . . . . . . . . . .  18
     6.8.  JoinControl (H) . . . 10
       3.3.6.  Additional Mappings . . . . . . . . . . . . . . . . . 10
       3.3.7.  Directionality .  19
     6.9.  OldHangulJamo (I) . . . . . . . . . . . . . . . . . . . 10
   4.  Use of PRECIS String Classes .  19
     6.10. Unassigned (J)  . . . . . . . . . . . . . . . . 10
     4.1.  Principles . . . . .  19
     6.11. ASCII7 (K)  . . . . . . . . . . . . . . . . . . . 10
     4.2.  Subclassing . . . .  20
     6.12. Controls (L)  . . . . . . . . . . . . . . . . . . . 11
     4.3.  A Note about Spaces . . .  20
     6.13. PrecisIgnorableProperties (M) . . . . . . . . . . . . . .  20
     6.14. Spaces (N)  . . 11
   5.  Code Point Properties . . . . . . . . . . . . . . . . . . . . 12
   6.  Category Definitions Used to Calculate Derived Property
       Value .  20
     6.15. Symbols (O) . . . . . . . . . . . . . . . . . . . . . . .  21
     6.16. Punctuation (P) . . . . 14
     6.1.  LetterDigits (A) . . . . . . . . . . . . . . . . .  21
     6.17. HasCompat (Q) . . . . 14
     6.2.  Unstable (B) . . . . . . . . . . . . . . . . . .  21
     6.18. OtherLetterDigits (R) . . . . . 15
     6.3.  IgnorableProperties (C) . . . . . . . . . . . . .  21
   7.  Calculation of the Derived Property . . . . 15
     6.4.  IgnorableBlocks (D) . . . . . . . . .  21
   8.  Code Points . . . . . . . . . . 15
     6.5.  LDH (E) . . . . . . . . . . . . . . .  23
   9.  Security Considerations . . . . . . . . . . 15
     6.6.  Exceptions (F) . . . . . . . . .  23
     9.1.  General Issues  . . . . . . . . . . . . . 15
     6.7.  BackwardCompatible (G) . . . . . . . .  23
     9.2.  Use of the IdentifierClass  . . . . . . . . . . 17
     6.8.  JoinControl (H) . . . . .  24
     9.3.  Use of the FreeformClass  . . . . . . . . . . . . . . . . 17
     6.9.  OldHangulJamo (I)  . . . . . . . . . . . . . . . . . . . . 17
     6.10. Unassigned (J) . . . . . . . . . . . . . . . . . . . . . . 18
     6.11. ASCII7 (K) . . . . . . . . . . . . . . . . . . . . . . . . 18
     6.12. Controls (L) . . . . . . . . . . . . . . . . . . . . . . . 18
     6.13. PrecisIgnorableProperties (M)  . . . . . . . . . . . . . . 18
     6.14. Spaces (N) . . . . . . . . . . . . . . . . . . . . . . . . 19
     6.15. Symbols (O)  . . . . . . . . . . . . . . . . . . . . . . . 19
     6.16. Punctuation (P)  . . . . . . . . . . . . . . . . . . . . . 19
     6.17. HasCompat (Q)  . . . . . . . . . . . . . . . . . . . . . . 19
     6.18. OtherLetterDigits (R)  . . . . . . . . . . . . . . . . . . 19
   7.  Calculation of the Derived Property  . . . . . . . . . . . . . 20
   8.  Code Points  . . . . . . . . . . . . . . . . . . . . . . . . . 21
   9.  Security Considerations  . . . . . . . . . . . . . . . . . . . 21
     9.1.  General Issues . . . . . . . . . . . . . . . . . . . . . . 21
     9.2.  Use of the NameClass . . . . . . . . . . . . . . . . . . . 21
     9.3.  Use of the FreeClass . . . . . . . . . . . . . . . . . . . 21  24
     9.4.  Local Character Set Issues  . . . . . . . . . . . . . . . . 22  24
     9.5.  Visually Similar Characters . . . . . . . . . . . . . . . 22  24
     9.6.  Security of Passwords . . . . . . . . . . . . . . . . . . 24  26
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 25  27
     10.1.  PRECIS Derived Property Value Registry . . . . . . . . . . 25  27
     10.2.  PRECIS Base Classes Registry . . . . . . . . . . . . . . . 25  27
     10.3.  PRECIS Subclasses Registry . . . . . . . . . . . . . . . . 26  28
     10.4.  PRECIS Usage Registry  . . . . . . . . . . . . . . . . . . 27  30
   11. Interoperability Considerations . . . . . . . . . . . . . . . 28  31
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . . . 29  31
     12.1.  Normative References . . . . . . . . . . . . . . . . . . . 29  32
     12.2.  Informative References . . . . . . . . . . . . . . . . . . 29  32
   Appendix A.  Codepoint Table  . . . . . . . . . . . . . . . . . . . 31  34
   Appendix B.  Acknowledgements . . . . . . . . . . . . . . . . . . 66  69
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 67  70

1.  Introduction

   As described in [I-D.ietf-precis-problem-statement], the PRECIS problem statement [RFC6885], many IETF
   protocols have used the Stringprep framework [RFC3454] as the basis
   for preparing and comparing protocol strings that contain Unicode
   code points [UNICODE]. [UNICODE] outside the ASCII range [RFC20].  The
   Stringprep framework was developed during work on the original
   technology for internationalized domain names (IDNs), here called
   "IDNA2003" [RFC3490], and Nameprep [RFC3491] was the Stringprep
   profile for IDNs.  At the time, Stringprep was designed as a general
   framework so that other application protocols could define their own
   Stringprep profiles for the preparation and comparison of strings and identifiers, and
   identifiers.  Indeed, a number of application protocols did define defined such
   profiles.

   After the publication of [RFC3454] in 2002, several significant
   issues arose with the use of Stringprep in the IDN case, as
   documented in the IAB's recommendations regarding IDNs [RFC4690]
   (most significantly, Stringprep was tied to Unicode version 3.2).
   Therefore, the new IDNA specifications, here called "IDNA2008"
   ([RFC5890], [RFC5891], [RFC5892], [RFC5893], [RFC5894]), no longer
   use Stringprep and Nameprep.  This migration away from Stringprep for
   IDNs has prompted other "customers" of Stringprep to consider new
   approaches to the preparation and comparison of internationalized
   strings (a.k.a.  "PRECIS"), as described in [I-D.ietf-precis-problem-statement]. [RFC6885].

   This document defines a framework for a post-Stringprep approach to
   the preparation and comparison of internationalized strings in
   application protocols, based on several principles:

   1.  Define a small set of base string classes appropriate for common
       application protocol constructs such as usernames and free-form
       strings.

   2.  Define each base PRECIS string class in terms of Unicode code points
       and their properties so that an algorithm can be used to
       determine whether each code point or character category is valid,
       disallowed, or unassigned.

   3.  Define string classes in terms of allowable code points, so that
       any code points not explicitly allowed are forbidden.

   4.  Enable application protocols to subclass the base PRECIS string
       classes if needed, mainly to disallow particular code points that
       are currently disallowed in the relevant application protocol
       (e.g., characters with special or reserved meaning, such as "@"
       and "/" when used as separators within identifiers).

   5.  Leave various mapping operations (e.g., case preservation or
       lowercasing, Unicode normalization, mapping of certain characters
       to other characters or to nothing, handling of full-width and
       half-width characters, handling of right-to-left characters) as
       the responsibility of application protocols, as was done for
       IDNA2008 through an IDNA-specific mapping document [RFC5895].

   It is expected that this framework will yield the following benefits:

   o  Application protocols will be more version-agile with regard to
      the Unicode database.

   o  Implementers will be able to share code point tables and software
      code across application protocols, most likely by means of
      software libraries.

   o  End users will be able to acquire more accurate expectations about
      the code points that are acceptable in various contexts.  Given
      this more uniform set of string classes, it is also expected that
      copy/paste operations between software implementing different
      application protocols will be more predictable and coherent.

   Although this framework is similar to IDNA2008 and borrows some of
   the character categories defined in [RFC5892], it defines additional
   string classes and character categories to meet the needs of common
   application protocols.

2.  Terminology

   Many important terms used in this document are defined in [RFC5890],
   [RFC6365], [I-D.ietf-precis-problem-statement], [RFC6885], and [UNICODE].

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in
   [RFC2119].

3.  String Classes

3.1.  Overview

   IDNA2008 essentially defines a base string class of internationalized
   domain name, name (IDN), although it does not use the term "string class".
   (This document does not define a string class for domain names, and
   application protocols are strongly encouraged to use IDNA2008 as the
   appropriate method to prepare domain names and hostnames.)  Because
   the IDN string class is designed to meet the particular requirements
   of the Domain Name System (DNS), additional string classes are needed
   for non-DNS applications.

   Starting in 2010, various "customers" of Stringprep began to discuss
   the need to define a post-Stringprep approach to the preparation and
   comparison of internationalized strings.  As a result of analyzing
   existing Stringprep profiles, this community concluded that most
   existing uses could be addressed by two base string classes:

   NameClass:

   IdentifierClass:  a sequence of letters, numbers, and symbols that is
      used to identify or address a network entity such as a user
      account, a venue (e.g., a chatroom), an information source (e.g.,
      a data feed), or a collection of data (e.g., a file); the intent
      is that this class will be very safe for use in a wide variety of
      application protocols, with the result that safety has been
      prioritized over inclusiveness for this class.

   FreeClass:

   FreeformClass:  a sequence of letters, numbers, symbols, spaces, and
      other code points that is used for free-form strings, including
      passwords as well as display elements such as human-friendly
      nicknames in chatrooms; the intent is that this class will allow
      nearly any Unicode character, with the result that inclusiveness
      has been prioritized over safety for this class (e.g., protocol
      designers, application developers, service providers, and end
      users might not understand or be able to enter all of the
      characters that can be included in the FreeClass). FreeformClass).

   Although members of the community discussed the possibility of
   defining other bases PRECIS string classes (e.g., a class falling somewhere
   between the NameClass IdentifierClass and the FreeClass), FreeformClass), they concluded
   that the
   NameClass IdentifierClass would be a safe choice meeting the needs of
   many or even most application protocols, and that protocols needing a
   wider range of Unicode characters could use the FreeClass FreeformClass
   directly or subclass it if needed.

   The following subsections discuss the NameClass IdentifierClass and FreeClass
   FreeformClass in more detail, with reference to the dimensions
   described in Section 3 of
   [I-D.ietf-precis-problem-statement]. [RFC6885].  (Naturally, future documents
   can define base PRECIS string classes beyond the NameClass IdentifierClass and FreeClass;
   FreeformClass; see Section 10.2.)  Each string class (or a particular
   usage thereof) is defined by the following behavioral rules:

   Valid:  defines which code points and character categories are
      treated as valid input to the string.

   Disallowed:  defines which code points and character categories are
      treated as disallowed for the string.

   Unassigned:  defines application behavior in the presence of code
      points that are unassigned, i.e.  unknown for the version of
      Unicode the application is built upon.

   Normalization:  defines which Unicode normalization form (D, KD, C,
      or KC) is to be applied (see [UAX15]).

   Casemapping:

   Case Mapping:  specifies if casemapping case mapping is performed (instead of
      case
      preservation), preservation) on uppercase and titlecase characters, and how
      the mapping is done (e.g., mapping uppercase and titlecase
      characters to their lowercase equivalents).

   Width Mapping:  specifies if width mapping is performed on fullwidth
      and halfwidth characters, and how the mapping is done (e.g.,
      mapping fullwidth and halfwidth characters to their decomposition
      equivalents).

   Directionality:  defines application behavior in the presence of code
      points that have directionality, in particular right-to-left code
      points as defined in the Unicode database (see [UAX9]).

   This document defines the valid, disallowed, and unassigned rules for
   the NameClass IdentifierClass and FreeClass. FreeformClass.  Application protocols that
   use these string classes are responsible for defining the
   normalization,
   casemapping, case mapping, width mapping, and directionality rules,
   as well as any additional mappings to be applied (e.g., mapping fullwidth and halfwidth
   characters to their decomposition equivalents).

   NOTE:

   Note: In order to ensure proper comparison, any normalization MUST be
   completed before the application of additional mappings or the
   process of checking whether a code point is valid, disallowed, or
   unassigned.

3.2.  NameClass  IdentifierClass

   Most application technologies need strings that can be used to refer
   to, include, or communicate things protocol strings like usernames, file
   names, data feed names, identifiers, and chatroom names.  We group such things
   strings into a class called "NameClass" "IdentifierClass" having the following
   features.

3.2.1.  Valid

   o  Code points traditionally used as letters and numbers in writing
      systems, i.e., the LetterDigits ("A") category first defined in
      [RFC5892] and listed here under Section 6.1.

   o  Code points in the range U+0021 through U+007E, i.e., the ASCII7
      ("K") rule defined under Section 6.11.  These code points are
      "grandfathered" into PRECIS and thus are valid even if they would
      otherwise be disallowed according to the property-based rules
      specified in the next section.

   Although the PRECIS IdentifierClass re-uses the LetterDigits category
   from IDNA2008, the range of characters allowed in the IdentifierClass
   is wider than the range of characters allowed in IDNA2008.  The main
   reason is that IDNA2008 applies the Unstable category before the
   LetterDigits category, thus disallowing uppercase characters, whereas
   the IdentifierClass does not apply the Unstable category.

3.2.2.  Disallowed

   o  Control characters, i.e., the Controls ("L") category defined
      under Section 6.12.

   o  Ignorable characters, i.e., the PrecisIgnorableProperties ("M")
      category defined under Section 6.13.

   o  Space characters, i.e., the Spaces ("N") category defined under
      Section 6.14.

   o  Symbol characters, i.e., the Symbols ("O") category defined under
      Section 6.15.

   o  Punctuation characters, i.e., the Punctuation ("P") category
      defined under Section 6.16.

   o  Any character that has a compatibility equivalent, i.e., the
      HasCompat ("Q") category defined under Section 6.17.  These code
      points are disallowed even if they would otherwise be valid
      according to the property-based rules specified in the previous
      section.

   o  Letters and digits other than the "traditional" letters and digits
      allowed in IDNs, i.e., the OtherLetterDigits ("R") category
      defined under Section 6.18.

3.2.3.  Unassigned

   Any code points that are not yet assigned in the Unicode character
   set SHALL be considered Unassigned for purposes of the NameClass.
   IdentifierClass.

3.2.4.  Normalization

   The Unicode normalization form MUST be specified by each application
   protocol that uses or subclasses the NameClass. IdentifierClass.

   However, in accordance with [RFC5198], normalization form C (NFC) is
   RECOMMENDED.

3.2.5.  Casemapping  Case Mapping

   The casemapping case mapping rule MUST be specified by each application protocol
   that uses or subclasses the NameClass. IdentifierClass.

3.2.6.  Width Mapping

   The width mapping rule MUST be specified by each application protocol
   that uses or subclasses the IdentifierClass.

3.2.7.  Additional Mappings
   Additional mapping rules (if any) MUST be specified by each
   application protocol that uses or subclasses the NameClass.

3.2.7. IdentifierClass.

3.2.8.  Directionality

   The directionality rule MUST be specified by each application
   protocol that uses or subclasses the NameClass. IdentifierClass.

3.3.  FreeClass  FreeformClass

   Some application technologies need strings that can be used in a
   free-form way, e.g., as a password in an authentication exchange (see
   [I-D.melnikov-precis-saslprepbis]
   [I-D.ietf-precis-saslprepbis] or a nickname in a chatroom (see
   [I-D.ietf-precis-nickname]).  We group such things into a class
   called "FreeClass" "FreeformClass" having the following features.

   NOTE:

   Note: Consult Section 9.6 for relevant security considerations when
   strings conforming to the FreeClass, FreeformClass, or a subclass thereof, are
   used as passwords.

3.3.1.  Valid

   o  Traditional letters and numbers, i.e., the LetterDigits ("A")
      category first defined in [RFC5892] and listed here under
      Section 6.1.

   o  Letters and digits other than the "traditional" letters and digits
      allowed in IDNs, i.e., the OtherLetterDigits ("R") category
      defined under Section 6.18.

   o  Code points in the range U+0021 through U+007E, i.e., the ASCII7
      ("K") rule defined under Section 6.11.

   o  Any character that has a compatibility equivalent, i.e., the
      HasCompat ("Q") category defined under Section 6.17.

   o  Space characters, i.e., the Spaces ("N") category defined under
      Section 6.14.

   o  Symbol characters, i.e., the Symbols ("O") category defined under
      Section 6.15.

   o  Punctuation characters, i.e., the Punctuation ("P") category
      defined under Section 6.16.

3.3.2.  Disallowed
   o  Control characters, i.e., the Controls ("L") category defined
      under Section 6.12.

   o  Ignorable characters, i.e., the PrecisIgnorableProperties ("M")
      category defined under Section 6.13.

3.3.3.  Unassigned

   Any code points that are not yet assigned in the Unicode character
   set SHALL be considered Unassigned for purposes of the FreeClass. FreeformClass.

3.3.4.  Normalization

   The Unicode normalization form MUST be specified by each application
   protocol that uses or subclasses the FreeClass. FreeformClass.

   However, in accordance with [RFC5198], normalization form C (NFC) is
   RECOMMENDED.

3.3.5.  Casemapping  Case Mapping

   The casemapping case mapping rule MUST be specified by each application protocol
   that uses or subclasses the FreeClass. FreeformClass.

   In general, the combination of case preservation and case-insensitive
   comparison of internationalized strings is NOT RECOMMENDED; instead,
   application protocols SHOULD either (a) not preserve case but perform
   case-insensitive comparison or (b) preserve case but perform case-
   sensitive comparison.

   In order to maximize entropy and minimize the potential for false
   positives, it is NOT RECOMMENDED for application protocols to map
   uppercase and titlecase code points to their lowercase equivalents
   when strings conforming to the FreeClass, or a subclass thereof, are
   used the FreeformClass, or a subclass thereof,
   are used in passwords; instead, it is RECOMMENDED to preserve the
   case of all code points contained in such strings and then perform
   case-sensitive comparison.  See also the related discussion in
   [I-D.ietf-precis-saslprepbis].

3.3.6.  Width Mapping

   The width mapping rule MUST be specified by each application protocol
   that uses or subclasses the FreeformClass.

   Because one aspect of Unicode normalization form KC is width mapping,
   a PRECIS usage or subclass that uses NFKC does not need to specify
   width mapping.  However, if NFC is used then the usage or subclass
   needs to specify whether to apply width mapping; in passwords; instead, it this case, width
   mapping is in general RECOMMENDED because allowing fullwidth and
   halfwidth characters to preserve remain unmapped to their decomposition
   equivalents would violate the case principle of
   all code points contained in such strings and then perform case-
   sensitive comparison.  See also least user surprise.  For
   more information about the related discussion concept of width in
   [I-D.melnikov-precis-saslprepbis].

3.3.6. East Asian scripts
   within Unicode, see for instance [UAX11].

3.3.7.  Additional Mappings

   Additional mapping rules (if any) MUST be specified by each
   application protocol that uses or subclasses the FreeClass.

3.3.7. FreeformClass.

3.3.8.  Directionality

   The directionality rule MUST be specified by each application
   protocol that uses or subclasses the FreeClass. FreeformClass.

4.  Use of PRECIS String Classes

4.1.  Principles

   This document defines the valid, disallowed, and unassigned rules.
   Application protocols that use the PRECIS string classes MUST define
   the normalization, casemapping, case mapping, width mapping, and directionality
   rules.  Such definitions MUST at a minimum specify the following:

   Normalization:  Which Unicode normalization form (D, KD, C, or KC) is
      to be applied (see [UAX15] for background information); in
      accordance with [RFC5198], NFC is RECOMMENDED.

   Casemapping:

   Case Mapping:  Whether uppercase and titlecase code points are to be
      (a) preserved or (b) mapped to lowercase.

   Additional Mappings:  Whether additional mappings are to be applied,
      such as mapping fullwidth and halfwidth characters to their
      decomposition mappings, equivalents, mapping non-ASCII space characters to
      ASCII space, or mapping certain characters to nothing.

   Directionality:  Whether any instance of the class that contains a
      right-to-left code point is to be considered a right-to-left
      string, or whether some other rule is to be applied (e.g., the
      "Bidi Rule" from [RFC5893]).

4.2.  Subclassing
   Application protocols are allowed to subclass the base PRECIS string
   classes specified in this document.  As the word "subclass" implies,
   a subclass MUST NOT add as valid any code points or character
   categories that are disallowed by the base relevant PRECIS string class.
   However, a subclass MAY do either of the following:

   1.  Exclude specific code points that are included in the base relevant
       PRECIS string class.

   2.  Exclude characters matching certain Unicode properties (e.g.,
       math symbols) that are included in the base relevant PRECIS string
       class.

   As a result, code points that are defined as valid for the base PRECIS
   string class being subclassed will be defined as disallowed for the
   subclass.

   Application protocols that subclass the PRECIS string classes MUST
   register with the IANA as described under Section 10.3.

   It is RECOMMENDED for subclass names to be of the form
   "SubclassBaseClass", where the "Subclass" string is a differentiator
   and "BaseClass" is the name of the base PRECIS string class being
   subclassed; for example, the subclass of the NameClass IdentifierClass used for
   localparts in the Extensible Messaging and Presence Protocol (XMPP)
   is named
   "LocalpartNameClass" "LocalpartIdentifierClass" [I-D.ietf-xmpp-6122bis].

4.3.  A Note about Spaces

   The NameClass  Building Application-Layer Constructs

   Sometimes, an application-layer construct does not allow spaces map directly to
   one of any kind (even ASCII space,
   U+0020).  This the PRECIS string classes.  Consider, for example, the "simple
   user name" construct in the Simple Authentication and Security Layer
   (SASL) [RFC4422].  Depending on the deployment, a simple user name
   might take the form of a user's full name (e.g., the user's personal
   name followed by a space and then the user's family name).  Such a
   simple user name cannot be counter-intuitive, given that spaces defined as an instance of the
   IdentifierClass, since space characters are
   included between family names and personal names when representing not allowed in the full names
   IdentifierClass; however, it could be defined using a space-separated
   sequence of people (and full names might IdentifierClass instances, as in the following pseudo-
   ABNF [RFC5234]:

   fullname = namepart [1*(1*SP namepart)]
   namepart = 1*(idpoint)
              ;
              ; an "idpoint" is a UTF-8 encoded Unicode code point
              ; that conforms to the PRECIS IdentifierClass

   Similar techniques could be used as usernames).
   The to define many application-layer
   constructs, say of the form "user@domain" or "/path/to/file".

4.4.  A Note about Spaces

   With regard to the IdentiferClass, the consensus of the PRECIS
   Working Group is was that spaces are problematic for many reasons, for example because
   including:

   o  Many Unicode characters are confusable with ASCII space.

   o  Even if non-ASCII space characters are mapped to ASCII space
      (U+0020), space characters are often not rendered in user
      interfaces, leading to the possibility that human user might
      consider a string containing spaces to be equivalent to the same
      string without spaces.

   o  In some locales locales, some devices are known to generate a character
      other than ASCII space (such as ZERO WIDTH JOINER, U+200D) when a
      user performs an action like hit the space bar on a keyboard.  Working Group participants
   also raised concerns about the fact that spaces are not always
   visible, and that many Unicode characters might be confusable with
   ASCII space.

   Although some existing protocols, such as the Simple Authentication
   and Security Layer (SASL) [RFC4422], might be used in ways that allow
   a username to include spaces, the sense of the Working Group was that
   such protocols could define an application-layer construct that
   consists of instances of the PRECIS NameClass separated from each
   other by instances of the ASCII space character (U+0020).

   One consequence of this approach disallowing space characters in the
   IdentifierClass might be to effectively discourage the use of ASCII
   space (or, even more problematically, non-ASCII space characters)
   within identifiers created in newer application protocols; given the
   challenges involved in properly handling space characters in usernames,
   identifiers,
   identifiers and other protocol strings, the Working Group considered
   this to be a feature, not a bug.

   However, the FreeformClass does allow spaces, which enables
   application protocols to define subclasses of the FreeformClass that
   are more flexible than any profiles of the IdentifierClass.

5.  Code Point Properties

   In order to implement the string classes described above, this
   document does the following:

   1.  Reviews and classifies the collections of code points in the
       Unicode character set by examining various code point properties.

   2.  Defines an algorithm for determining a derived property value,
       which can vary depending on the string class being used by the
       relevant application protocol.

   This document is not intended to specify precisely how derived
   property values are to be applied in protocol strings.  That
   information is the responsibility of the protocol specification that
   uses or subclasses a base PRECIS string class from this document.

   The value of the property is to be interpreted as follows.

   PROTOCOL VALID  Those code points that are allowed to be used in any
      PRECIS string class (NameClass (IdentifierClass and FreeClass). FreeformClass).  Code
      points with this property value are permitted for general use in
      any string class.  The abbreviated term PVALID is used to refer to
      this value in the remainder of this document.

   SPECIFIC CLASS PROTOCOL VALID  Those code points that are allowed to
      be used in specific string classes.  Code points with this
      property value are permitted for use in specific string classes.
      In the remainder of this document, the abbreviated term *_PVAL is
      used, where * = (NAME | FREE), i.e., either FREE_PVAL or
      NAME_PVAL.
      SAFE_PVAL.

   CONTEXTUAL RULE REQUIRED  Some characteristics of the character, such
      as its 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 in the remainder of this
      document.  As in IDNA2008, there are two subdivisions of
      CONTEXTUAL RULE REQUIRED, the first for Join_controls (called
      CONTEXTJ) and the second for other characters (called CONTEXTO).

   DISALLOWED  Those code points that must not permitted in any PRECIS
      string class.

   SPECIFIC CLASS DISALLOWED  Those code points that are not to be
      included in a specific string class.  Code points with this
      property value are not permitted in one of the string classes but
      might be permitted in others.  In the remainder of this document,
      the abbreviated term *_DIS is used, where * = (NAME | FREE), i.e.,
      either FREE_DIS or NAME_DIS. SAFE_DIS.

   UNASSIGNED  Those code points that are not designated (i.e.  are
      unassigned) in the Unicode Standard.

   The mechanisms described here allow determination of the value of the
   property for future versions of Unicode (including characters added
   after Unicode 5.2 or 6.1 depending on the category, since some
   categories in this document are reused from IDNA2008 and therefore
   were defined at the time of Unicode 5.2).  Changes in Unicode
   properties that do not affect the outcome of this process do not
   affect this framework.  For example, a character can have its Unicode
   General_Category value [UNICODE] change from So to Sm, or from Lo to
   Ll, without affecting the algorithm results.  Moreover, even if such
   changes were to result, the BackwardCompatible list (Section 6.7) can
   be adjusted to ensure the stability of the results.

   Some code points need to be allowed in exceptional circumstances, but
   ought to be excluded in all other cases; these rules are also
   described in other documents.  The most notable of these are the Join
   Control characters, U+200D ZERO WIDTH JOINER and U+200C ZERO WIDTH
   NON-JOINER.  Both of them have the derived property value CONTEXTJ.
   A character with the derived property value CONTEXTJ or CONTEXTO
   (CONTEXTUAL RULE REQUIRED) is not to be used unless an appropriate
   rule has been established and the context of the character is
   consistent with that rule.  It is invalid to generate a string
   containing these characters unless such a contextual rule is found
   and satisfied.  PRECIS does not define its own contextual rules, but
   instead re-uses the contextual rules defined for IDNA2008; please see
   Appendix A of [RFC5892] for more information.

6.  Category Definitions Used to Calculate Derived Property Value

   The derived property obtains its value based on a two-step procedure:

   1.  Characters are placed in one or more character categories either
       (1) based on core properties defined by the Unicode Standard or
       (2) by treating the code point as an exception and addressing the
       code point based on its code point value.  These categories are
       not mutually exclusive.

   2.  Set operations are used with these categories to determine the
       values for a property that is specific to a given string class.
       These operations are specified under Section 7.

   (NOTE:

   (Note: Unicode property names and property value names might have
   short abbreviations, such as "gc" for the General_Category property
   and "Ll" for the Lowercase_Letter property value of the gc property.)

   In the following specification of character categories, the operation
   that returns the value of a particular Unicode character property for
   a code point is designated by using the formal name of that property
   (from the Unicode PropertyAliases.txt [1]) followed by '(cp)' for
   "code point".  For example, the value of the General_Category
   property for a code point is indicated by General_Category(cp).

   The first ten categories (A-J) shown below were previously defined
   for IDNA2008 and are copied directly from [RFC5892].  Some of these
   categories are reused in PRECIS and some of them are not; however,
   the lettering of categories is retained to prevent overlap and to
   ease implementation of both IDNA2008 and PRECIS in a single software
   application.  The next seven categories (K-Q) are specific to PRECIS.

6.1.  LetterDigits (A)

   NOTE:

   Note: This category is defined in [RFC5892] and copied here for use
   in PRECIS.

   A: General_Category(cp) is in {Ll, Lu, Lm, Lo, Mn, Mc, Nd}

   These rules identify characters commonly used in mnemonics and often
   informally described as "language characters".

   For more information, see section 4.5 of [UNICODE].

   The categories used in this rule are:

   o  Ll - Lowercase_Letter

   o  Lu - Uppercase_Letter

   o  Lm - Modifier_Letter

   o  Lo - Other_Letter

   o  Mn - Nonspacing_Mark

   o  Mc - Spacing_Mark

   o  Nd - Decimal_Number

6.2.  Unstable (B)

   NOTE:

   Note: This category is defined in [RFC5892] but not used in PRECIS.

6.3.  IgnorableProperties (C)

   NOTE:

   Note: This category is defined in [RFC5892] but not used in PRECIS.
   See the "PrecisIgnorableProperties (M)" category below for a more
   inclusive category used in PRECIS identifiers.

6.4.  IgnorableBlocks (D)

   NOTE:

   Note: This category is defined in [RFC5892] but not used in PRECIS.

6.5.  LDH (E)

   NOTE:

   Note: This category is defined in [RFC5892] but not used in PRECIS.
   See the "ASCII7 (K)" category below for a more inclusive category
   used in PRECIS identifiers.

6.6.  Exceptions (F)

   NOTE:

   Note: This category is defined in [RFC5892] and used in PRECIS to
   ensure consistent treatment of the relevant code points.

   F: cp is in {00B7, 00DF, 0375, 03C2, 05F3, 05F4, 0640, 0660,
                0661, 0662, 0663, 0664, 0665, 0666, 0667, 0668,
                0669, 06F0, 06F1, 06F2, 06F3, 06F4, 06F5, 06F6,
                06F7, 06F8, 06F9, 06FD, 06FE, 07FA, 0F0B, 3007,
                302E, 302F, 3031, 3032, 3033, 3034, 3035, 303B,
                30FB}

   This category explicitly lists code points for which the category
   cannot be assigned using only the core property values that exist in
   the Unicode standard.  The values are according to the table below:

   PVALID -- Would otherwise have been DISALLOWED

   00DF; PVALID     # LATIN SMALL LETTER SHARP S
   03C2; PVALID     # GREEK SMALL LETTER FINAL SIGMA
   06FD; PVALID     # ARABIC SIGN SINDHI AMPERSAND
   06FE; PVALID     # ARABIC SIGN SINDHI POSTPOSITION MEN
   0F0B; PVALID     # TIBETAN MARK INTERSYLLABIC TSHEG
   3007; PVALID     # IDEOGRAPHIC NUMBER ZERO

   CONTEXTO -- Would otherwise have been DISALLOWED

   00B7; CONTEXTO   # MIDDLE DOT
   0375; CONTEXTO   # GREEK LOWER NUMERAL SIGN (KERAIA)
   05F3; CONTEXTO   # HEBREW PUNCTUATION GERESH
   05F4; CONTEXTO   # HEBREW PUNCTUATION GERSHAYIM
   30FB; CONTEXTO   # KATAKANA MIDDLE DOT

   CONTEXTO -- Would otherwise have been PVALID

   0660; CONTEXTO   # ARABIC-INDIC DIGIT ZERO
   0661; CONTEXTO   # ARABIC-INDIC DIGIT ONE
   0662; CONTEXTO   # ARABIC-INDIC DIGIT TWO
   0663; CONTEXTO   # ARABIC-INDIC DIGIT THREE
   0664; CONTEXTO   # ARABIC-INDIC DIGIT FOUR
   0665; CONTEXTO   # ARABIC-INDIC DIGIT FIVE
   0666; CONTEXTO   # ARABIC-INDIC DIGIT SIX
   0667; CONTEXTO   # ARABIC-INDIC DIGIT SEVEN
   0668; CONTEXTO   # ARABIC-INDIC DIGIT EIGHT
   0669; CONTEXTO   # ARABIC-INDIC DIGIT NINE
   06F0; CONTEXTO   # EXTENDED ARABIC-INDIC DIGIT ZERO
   06F1; CONTEXTO   # EXTENDED ARABIC-INDIC DIGIT ONE
   06F2; CONTEXTO   # EXTENDED ARABIC-INDIC DIGIT TWO
   06F3; CONTEXTO   # EXTENDED ARABIC-INDIC DIGIT THREE
   06F4; CONTEXTO   # EXTENDED ARABIC-INDIC DIGIT FOUR
   06F5; CONTEXTO   # EXTENDED ARABIC-INDIC DIGIT FIVE
   06F6; CONTEXTO   # EXTENDED ARABIC-INDIC DIGIT SIX
   06F7; CONTEXTO   # EXTENDED ARABIC-INDIC DIGIT SEVEN
   06F8; CONTEXTO   # EXTENDED ARABIC-INDIC DIGIT EIGHT
   06F9; CONTEXTO   # EXTENDED ARABIC-INDIC DIGIT NINE

   DISALLOWED -- Would otherwise have been PVALID

   0640; DISALLOWED # ARABIC TATWEEL
   07FA; DISALLOWED # NKO LAJANYALAN
   302E; DISALLOWED # HANGUL SINGLE DOT TONE MARK
   302F; DISALLOWED # HANGUL DOUBLE DOT TONE MARK
   3031; DISALLOWED # VERTICAL KANA REPEAT MARK
   3032; DISALLOWED # VERTICAL KANA REPEAT WITH VOICED SOUND MARK
   3033; DISALLOWED # VERTICAL KANA REPEAT MARK UPPER HALF
   3034; DISALLOWED # VERTICAL KANA REPEAT WITH VOICED SOUND MARK
                      UPPER HA
   3035; DISALLOWED # VERTICAL KANA REPEAT MARK LOWER HALF
   303B; DISALLOWED # VERTICAL IDEOGRAPHIC ITERATION MARK

6.7.  BackwardCompatible (G)

   NOTE:

   Note: This category is defined in [RFC5892] and copied here for use
   in PRECIS.  Because of how the PRECIS string classes are defined,
   only changes that would result in code points being added to or
   removed from the LetterDigits ("A") category would result in
   backward-incompatible modifications to code point assignments.
   Therefore, management of this category is handled via the processes
   specified in [RFC5892].

   G: cp is in {}
   This category includes the code points for which property values in
   versions of Unicode after 5.2 have changed in such a way that the
   derived property value would no longer be PVALID or DISALLOWED.  If
   changes are made to future versions of Unicode so that code points
   might change property value from PVALID or DISALLOWED, then this
   table can be updated and keep special exception values so that the
   property values for code points stay stable.

6.8.  JoinControl (H)

   NOTE:

   Note: This category is defined in [RFC5892] and copied here for use
   in PRECIS.

   H: Join_Control(cp) = True

   This category consists of Join Control characters (i.e., they are not
   in LetterDigits (Section 6.1) but are still required in strings under
   some circumstances).

6.9.  OldHangulJamo (I)

   NOTE:

   Note: This category is defined in [RFC5892] and copied here for use
   in PRECIS.

   I: Hangul_Syllable_Type(cp) is in {L, V, T}

   This category consists of all conjoining Hangul Jamo (Leading Jamo,
   Vowel Jamo, and Trailing Jamo).

   Elimination of conjoining Hangul Jamos from the set of PVALID
   characters results in restricting the set of Korean PVALID characters
   just to preformed, modern Hangul syllable characters.  Old Hangul
   syllables, which must be spelled with sequences of conjoining Hangul
   Jamos, are not PVALID for string classes.

6.10.  Unassigned (J)

   NOTE:

   Note: This category is defined in [RFC5892] and copied here for use
   in PRECIS.

   J: General_Category(cp) is in {Cn} and
      Noncharacter_Code_Point(cp) = False

   This category consists of code points in the Unicode character set
   that are not (yet) assigned.  It should be noted that Unicode
   distinguishes between 'unassigned code points' and 'unassigned
   characters'.  The unassigned code points are all but (Cn -
   Noncharacters), while the unassigned *characters* are all but (Cn +
   Cs).

6.11.  ASCII7 (K)

   This PRECIS-specific category exempts most characters in the ASCII-7
   range from other rules that might be applied during PRECIS
   processing, on the assumption that these code points are in such wide
   use that disallowing them would be counter-productive.

   K: cp is in {0021..007E}

6.12.  Controls (L)

   L: Control(cp) = True

6.13.  PrecisIgnorableProperties (M)

   This PRECIS-specific category is used to group code points that are
   not recommended for use in PRECIS string classes.

   M: Default_Ignorable_Code_Point(cp) = True or
      Noncharacter_Code_Point(cp) = True

   The definition for Default_Ignorable_Code_Point can be found in the
   DerivedCoreProperties.txt [2] file, and at the time of Unicode 6.1 is
   as follows:

     Other_Default_Ignorable_Code_Point
   + Cf (Format characters)
   + Variation_Selector
   - White_Space
   - FFF9..FFFB (Annotation Characters)
   - 0600..0604, 06DD, 070F, 110BD (exceptional Cf characters
                                    that should be visible)

6.14.  Spaces (N)

   This PRECIS-specific category is used to group code points that are
   space characters.

   N: General_Category(cp) is in {Zs}

6.15.  Symbols (O)

   This PRECIS-specific category is used to group code points that are
   symbols.

   O: General_Category(cp) is in {Sm, Sc, Sk, So}

6.16.  Punctuation (P)

   This PRECIS-specific category is used to group code points that are
   punctuation characters.

   P: General_Category(cp) is in {Pc, Pd, Ps, Pe, Pi, Pf, Po}

6.17.  HasCompat (Q)

   This PRECIS-specific category is used to group code points that have
   compatibility equivalents as explained in Chapter 2 and Chapter 3 of
   [UNICODE].

   Q: toNFKC(cp) != cp

   The toNFKC() operation returns the code point in normalization form
   KC.  For more information, see Section 5 of [UAX15].

6.18.  OtherLetterDigits (R)

   This PRECIS-specific category is used to group code points that are
   letters and digits other than the "traditional" letters and digits
   grouped under the LetterDigits (A) class (see Section 6.1).

   R: General_Category(cp) is in {Lt, Nl, No, Me}

7.  Calculation of the Derived Property

   Possible values of the derived property are:

   o  PVALID

   o  NAME_PVAL  SAFE_PVAL
   o  FREE_PVAL

   o  CONTEXTJ

   o  CONTEXTO

   o  DISALLOWED

   o  NAME_DIS  SAFE_DIS

   o  FREE_DIS

   o  UNASSIGNED

   NOTE:

   Note: The value of the derived property calculated can depend on the
   string class; for example, if an identifier used in an application
   protocol is defined as using or subclassing the PRECIS NameClass
   IdentifierClass then a space character such as U+0020 would be
   assigned to NAME_DIS, SAFE_DIS, whereas if an identifier is defined as using or
   subclassing the PRECIS FreeClass FreeformClass then the character would be
   assigned to FREE_PVAL.  For the sake of brevity, the designation
   "FREE_PVAL" is used in the code point tables, instead of the longer
   designation "NAME_DIS "SAFE_DIS or FREE_PVAL".  In practice, the derived
   properties NAME_PVAL SAFE_PVAL and FREE_DIS are not used in this specification,
   since every NAME_PVAL SAFE_PVAL code point is PVALID and every FREE_DIS code
   point is DISALLOWED.

   The algorithm to calculate the value of the derived property is as
   follows.  (NOTE:  (Note: Use of the name of a rule (such as "Exception")
   implies the set of code points that the rule defines, whereas the
   same name as a function call (such as "Exception(cp)") implies the
   value that the code point has in the Exceptions table.)
   If .cp. .in. Exceptions Then Exceptions(cp);
   Else If .cp. .in. BackwardCompatible Then BackwardCompatible(cp);
   Else If .cp. .in. Unassigned Then UNASSIGNED;
   Else If .cp. .in. ASCII7 Then PVALID;
   Else If .cp. .in. JoinControl Then CONTEXTJ;
   Else If .cp. .in. PrecisIgnorableProperties Then DISALLOWED;
   Else If .cp. .in. Controls Then DISALLOWED;
   Else If .cp. .in. OldHangulJamo Then DISALLOWED;
   Else If .cp. .in. LetterDigits Then PVALID;
   Else If .cp. .in. OtherLetterDigits Then NAME_DIS SAFE_DIS or FREE_PVAL;
   Else If .cp. .in. Spaces Then NAME_DIS SAFE_DIS or FREE_PVAL;
   Else If .cp. .in. Symbols Then NAME_DIS SAFE_DIS or FREE_PVAL;
   Else If .cp. .in. Punctuation Then NAME_DIS SAFE_DIS or FREE_PVAL;
   Else If .cp. .in. HasCompat Then NAME_DIS SAFE_DIS or FREE_PVAL;
   Else DISALLOWED;

8.  Code Points

   The Categories and Rules defined under Section 6 and Section 7 apply
   to all Unicode code points.  The table in Appendix A shows, for
   illustrative purposes, the consequences of the categories and
   classification rules, and the resulting property values.

   The list of code points that can be found in Appendix A is non-
   normative.  Instead, the rules defined by Section 6 and Section 7 are
   normative, and any tables are derived from the rules.

9.  Security Considerations

9.1.  General Issues

   The security of applications that use this framework can depend in
   part on the proper preparation and comparison of internationalized
   strings.  For example, such strings can be used to make
   authentication and authorization decisions, and the security of an
   application could be compromised if an entity providing a given
   string is connected to the wrong account or online resource based on
   different interpretations of the string.

   Specifications of application protocols that use this framework are
   encouraged to describe how internationalized strings are used in the
   protocol, including the security implications of any false positives
   and false negatives that might result from various comparison
   operations.  For some helpful guidelines, refer to
   [I-D.iab-identifier-comparison], [RFC5890], [UTR36], and [UTR39].

9.2.  Use of the NameClass IdentifierClass

   Strings that conform to the NameClass IdentifierClass and any subclass thereof
   are intended to be relatively safe for use in a broad range of
   applications, primarily because they include only letters, digits,
   and "grandfathered" non-space characters from the ASCII range; thus
   they exclude spaces, characters with compatibility equivalents, and
   almost all symbols and punctuation marks.  However, because such
   strings can still include so-called confusable characters (see
   Section 9.5, protocol designers and implementers are encouraged to
   pay close attention to the security considerations described
   elsewhere in this document.

9.3.  Use of the FreeClass FreeformClass

   Strings that conform to the FreeClass FreeformClass and many subclasses thereof
   can include virtually any Unicode character.  This makes the FreeClass
   FreeformClass quite expressive, but also problematic from the
   perspective of possible user confusion.  Protocol designers are
   hereby warned that the FreeClass FreeformClass contains codepoints they might
   not understand, and are encouraged to use or subclass the NameClass
   IdentifierClass wherever feasible; however, if an application
   protocol requires more code points than are allowed by the NameClass,
   IdentifierClass, protocol designers are encouraged to define a
   subclass of the FreeClass FreeformClass that restricts the allowable code
   points as tightly as possible.  (The working group considered the
   option of allowing superclasses as well as subclasses of PRECIS
   string classes, but decided against allowing superclasses to reduce
   the likelihood of security and interoperability problems.)

9.4.  Local Character Set Issues

   When systems use local character sets other than ASCII and Unicode,
   these specifications leave the problem of converting between the
   local character set and Unicode up to the application or local
   system.  If different applications (or different versions of one
   application) implement different rules for conversions among coded
   character sets, they could interpret the same name differently and
   contact different application servers or other network entities.
   This problem is not solved by security protocols, such as Transport
   Layer Security (TLS) [RFC5246] and the Simple Authentication and
   Security Layer (SASL) [RFC4422], that do not take local character
   sets into account.

9.5.  Visually Similar Characters
   Some characters are visually similar and thus can cause confusion
   among humans.  Such characters are often called "confusable
   characters" or "confusables".

   The problem of confusable characters is not necessarily caused by the
   use of Unicode code points outside the ASCII range.  For example, in
   some presentations and to some individuals the string "ju1iet"
   (spelled with the Arabic numeral one as the third character) might
   appear to be the same as "juliet" (spelled with the lowercase version
   of the letter "L"), especially on casual visual inspection.  This
   phenomenon is sometimes called "typejacking".

   However, the problem is made more serious by introducing the full
   range of Unicode code points into protocol strings.  For example, the
   characters U+13DA U+13A2 U+13B5 U+13AC U+13A2 U+13AC U+13D2 from the
   Cherokee block look similar to the ASCII characters "STPETER" as they
   might look when presented using a "creative" font family.

   In some examples of confusable characters, it is unlikely that the
   average human could tell the difference between the real string and
   the fake string.  (Indeed, there is no programmatic way to
   distinguish with full certainty which is the fake string and which is
   the real string; in some contexts, the string formed of Cherokee
   characters might be the real string and the string formed of ASCII
   characters might be the fake string.)  Because PRECIS-compliant
   strings can contain almost any properly-encoded Unicode code point,
   it can be relatively easy to fake or mimic some strings in systems
   that use the PRECIS framework.  The fact that some strings are easily
   confused introduces security vulnerabilities of the kind that have
   also plagued the World Wide Web, specifically the phenomenon known as
   phishing.

   Despite the fact that some specific suggestions about identification
   and handling of confusable characters appear in the Unicode Security
   Considerations [UTR36], it is also true (as noted in [RFC5890]) that
   "there are no comprehensive technical solutions to the problems of
   confusable characters".  Because it is impossible to map visually
   similar characters without a great deal of context (such as knowing
   the font families used), the PRECIS framework does nothing to map
   similar-looking characters together, nor does it prohibit some
   characters because they look like others.

   Nevertheless, specifications for application protocols that use this
   framework MUST describe how confusable characters can be used to
   compromise the security of systems that use the protocol in question,
   along with any protocol-specific suggestions for overcoming those
   threats.  In particular, software implementations and service
   deployments that use PRECIS-based technologies are strongly
   encouraged to define and implement consistent policies regarding the
   registration, storage, and presentation of visually similar
   characters.  The following recommendations are appropriate:

   1.  An application service SHOULD define a policy that specifies the
       scripts or blocks of characters that the service will allow to be
       registered (e.g., in an account name) or stored (e.g., in a file
       name).  Such a policy SHOULD be informed by the languages and
       scripts that are used to write registered account names; in
       particular, to reduce confusion, the service SHOULD forbid
       registration or storage of stings that contain characters from
       more than one script and SHOULD restrict registrations to
       characters drawn from a very small number of scripts (e.g.,
       scripts that are well-understood by the administrators of the
       service, to improve manageability).

   2.  User-oriented application software SHOULD define a policy that
       specifies how internationalized strings will be presented to a
       human user.  Because every human user of such software has a
       preferred language or a small set of preferred languages, the
       software SHOULD gather that information either explicitly from
       the user or implicitly via the operating system of the user's
       device.  Furthermore, because most languages are typically
       represented by a single script or a small set of scripts, and
       because most scripts are typically contained in one or more
       blocks of characters, the software SHOULD warn the user when
       presenting a string that mixes characters from more than one
       script or block, or that uses characters outside the normal range
       of the user's preferred language(s).  (Such a recommendation is
       not intended to discourage communication across different
       communities of language users; instead, it recognizes the
       existence of such communities and encourages due caution when
       presenting unfamiliar scripts or characters to human users.)

9.6.  Security of Passwords

   Two goals of passwords are to maximize the amount of entropy and to
   minimize the potential for false positives.  These goals can be
   achieved in part by allowing a wide range of code points and by
   ensuring that passwords are handled in such a way that code points
   are not compared aggressively.  Therefore, it is NOT RECOMMENDED for
   application protocols to subclass the FreeClass FreeformClass for use in
   passwords in a way that removes entire categories (e.g., by
   disallowing symbols or punctuation).  Furthermore, it is NOT
   RECOMMENDED for application protocols to map uppercase and titlecase
   code points to their lowercase equivalents in such strings; instead,
   it is RECOMMENDED to preserve the case of all code points contained
   in such strings and to compare them in a case-sensitive manner.

   That said, software implementers need to be aware that there exist
   tradeoffs between entropy and usability.  For example, allowing a
   user to establish a password containing "uncommon" code points might
   make it difficult for the user to access a service when using an
   unfamiliar or constrained input device.

   Some application protocols use passwords directly, whereas others
   reuse technologies that themselves process passwords (one example of
   such a technology is the Simple Authentication and Security Layer
   [RFC4422]).  Moreover, passwords are often carried by a sequence of
   protocols with backend authentication systems or data storage systems
   such as RADIUS [RFC2865] and LDAP [RFC4510].  Developers of
   application protocols are encouraged to look into reusing these
   profiles instead of defining new ones, so that end-user expectations
   about passwords are consistent no matter which application protocol
   is used.

10.  IANA Considerations

10.1.  PRECIS Derived Property Value Registry

   IANA is requested to create a PRECIS-specific registry with the
   Derived Properties for the versions of Unicode that are released
   after (and including) version 6.1.  The derived property value is to
   be calculated in cooperation with a designated expert [RFC5226]
   according to the rules specified under Section 6 and Section 7, not
   by copying the non-normative table found under Appendix A.

   The IESG is to be notified if backward-incompatible changes to the
   table of derived properties are discovered or if other problems arise
   during the process of creating the table of derived property values
   or during expert review.  Changes to the rules defined under
   Section 6 and Section 7) require IETF Review, as described in
   [RFC5226].

10.2.  PRECIS Base Classes Registry

   IANA is requested to create a registry of PRECIS base string classes.  In
   accordance with [RFC5226], the registration policy is "RFC Required".

   The registration template is as follows:

   Base Class:  [the name of the base PRECIS string class]

   Description:  [a brief description of the base PRECIS string class and its
      intended use, e.g., "A sequence of letters, numbers, and symbols
      that is used to identify or address a network entity."]

   Normalization:  [which Unicode normalization form is applied, e.g.,
      "NFC"; or "Application Specific" if to be defined by protocols
      that use the base PRECIS string class]
   Casemapping:

   Case Mapping:  [the behavioral rule for handling of case, e.g., "Map
      uppercase and titlecase characters to lowercase."; or "Application
      Specific" if to be defined by protocols that use the base PRECIS string
      class]

   Additional Mappings:  [any additional mappings are required or
      recommended, e.g., "Map non-ASCII space characters to ASCII
      space."; or "Application Specific" if to be defined by protocols
      that use the base PRECIS string class]

   Directionality:  [the behavioral rule for handling of right-to-left
      code points, e.g., "The 'Bidi Rule' defined in RFC 5893 applies.";
      or "Application Specific" if to be defined by protocols that use
      the base PRECIS string class]

   Specification:  [the RFC number]

   The initial registrations are as follows:

   Base Class: FreeClass. FreeformClass.
   Description: A sequence of letters, numbers, symbols, spaces, and
         other code points that is used for free-form strings.
   Normalization: Application Specific.
   Casemapping:
   Case Mapping: Application Specific.
   Additional Mappings: Application Specific.
   Directionality: Application Specific.
   Specification: RFC XXXX.  [Note to RFC Editor: please change XXXX to
                  the number issued for this specification.]

   Base Class: NameClass. IdentifierClass.
   Description: A sequence of letters, numbers, and symbols that is
         used to identify or address a network entity.
   Normalization: Application Specific.
   Casemapping:
   Case Mapping: Application Specific.
   Additional Mappings: Application Specific.
   Directionality: Application Specific.
   Specification: RFC XXXX.  [Note to RFC Editor: please change XXXX to
                  the number issued for this specification.]

10.3.  PRECIS Subclasses Registry

   IANA is requested to create a registry of subclasses that use the
   PRECIS base string classes.  In accordance with [RFC5226], the
   registration policy is "Expert Review".  This policy was chosen in
   order to ensure that "customers" of PRECIS receive appropriate
   guidance regarding the sometimes complex and subtle
   internationalization issues related to subclassing of PRECIS base string
   classes.

   The registration template is as follows:

   Subclass:  [the name of the subclass]

   Base Class:  [which base PRECIS string class is being subclassed]

   Exclusions:  [a brief description of the specific code points that
      are excluded or of the properties based on which characters are
      excluded, e.g., "Eight legacy characters in the ASCII range" or
      "Any character that has a compatibility equivalent, i.e., the
      HasCompat category"]

   Specification:  [a pointer to relevant documentation, such as an RFC
      or Internet-Draft]

   In order to request a review, the registrant shall send a completed
   template to the precis@ietf.org list or its designated successor.

   Factors to focus on while reviewing subclass registrations include
   the following:

   o  Is the problem well-defined?

   o  Is it clear what applications will use this subclass?

   o  Would an existing base PRECIS string class or subclass solve the
      problem?

   o  Are the defined exclusions a reasonable solution to the problem
      for the relevant applications?

   o  Is the subclass clearly defined?

   o  Does the subclass reduce the degree to which human users could be
      surprised by application behavior (the "principle of least user
      surprise")?

   o  Is the subclass based on an appropriate dividing line between user
      interface (culture, context, intent, locale, device limitations,
      etc.)  and the use of conformant strings in protocol elements?

   o  Does the subclass introduce any new security concerns (e.g., false
      positives for authentication or authorization)?

10.4.  PRECIS Usage Registry

   IANA is requested to create a registry of application protocols that
   use the base PRECIS string classes.  The registry will include one entry
   for each use (e.g., if a protocol uses both the NameClass IdentifierClass and
   the
   FreeClass FreeformClass then the specification for that protocol would
   submit two registrations).  In accordance with [RFC5226], the
   registration policy is "Expert Review".  This policy was chosen in
   order to ensure that "customers" of PRECIS receive appropriate
   guidance regarding the sometimes complex and subtle
   internationalization issues related to use of PRECIS base string classes.

   The registration template is as follows:

   Applicability:  [the specific protocol elements to which this usage
      applies, e.g., "Localparts in XMPP addresses."]

   Base Class:  [the base PRECIS string class that is being used or
      subclassed]

   Subclass:  [whether the protocol has defined a subclass of the base PRECIS
      string class and, if so, the name of the subclass, e.g., "Yes,
      LocalpartNameClass."]
      LocalpartIdentifierClass."]

   Replaces:  [the Stringprep profile that this PRECIS usage replaces,
      if any]

   Normalization:  [which Unicode normalization form is applied, e.g.,
      "NFC"]
   Casemapping:

   Case Mapping:  [the behavioral rule for handling of case, e.g., "Map
      uppercase and titlecase characters to lowercase."]

   Width Mapping:  [the behavioral rule for handling of width, e.g.,
      "Map fullwidth and halfwidth characters to their decomposition
      equivalents."]

   Additional Mappings:  [any additional mappings are required or
      recommended, e.g., "Map non-ASCII space characters to ASCII
      space."]

   Directionality:  [the behavioral rule for handling of right-to-left
      code points, e.g., "The 'Bidi Rule' defined in RFC 5893 applies."]

   Specification:  [a pointer to relevant documentation, such as an RFC
      or Internet-Draft]

   In order to request a review, the registrant shall send a completed
   template to the precis@ietf.org list or its designated successor.

   Factors to focus on while reviewing usage registrations include the
   following:

   o  Does the specification define what kinds of applications are
      involved and the protocol elements to which this usage applies?

   o  Is there a base PRECIS string class or subclass that would be more
      appropriate to use?

   o  Are the normalization, casemapping, case mapping, width mapping, additional
      mapping, and directionality rules appropriate for the intended
      use?

   o  Does the usage reduce the degree to which human users could be
      surprised by application behavior (the "principle of least user
      surprise")?

   o  Is the usage based on an appropriate dividing line between user
      interface (culture, context, intent, locale, device limitations,
      etc.)  and the use of conformant strings in protocol elements?

   o  Does the usage introduce any new security concerns (e.g., false
      positives for authentication or authorization)?

11.  Interoperability Considerations

   Although strings that are consumed in PRECIS-based application
   protocols are often encoded using UTF-8 [RFC3629], the exact encoding
   is a matter for the application protocol that reuses PRECIS, not for
   the PRECIS framework.

   It is known that some existing systems are unable to support the full
   Unicode character set, or even any characters outside the ASCII
   range.  If two (or more) applications need to interoperate when
   exchanging data (e.g., for the purpose of authenticating a username
   or password), they will naturally need have in common at least one
   coded character set (as defined by [RFC6365]).  Establishing such a
   baseline is a matter for the application protocol that reuses PRECIS,
   not for the PRECIS framework.

12.  References
12.1.  Normative References

   [RFC20]    Cerf, V., "ASCII format for network interchange", RFC 20,
              October 1969.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC5198]  Klensin, J. and M. Padlipsky, "Unicode Format for Network
              Interchange", RFC 5198, March 2008.

   [UNICODE]  The Unicode Consortium, "The Unicode Standard, Version
              6.1",
              6.2", 2012,
              <http://www.unicode.org/versions/Unicode6.1.0/>.
              <http://www.unicode.org/versions/Unicode6.2.0/>.

12.2.  Informative References

   [I-D.iab-identifier-comparison]
              Thaler, D., "Issues in Identifier Comparison for Security
              Purposes", draft-iab-identifier-comparison-04 draft-iab-identifier-comparison-09 (work in
              progress), August 2012. March 2013.

   [I-D.ietf-precis-nickname]
              Saint-Andre, P., "Preparation and Comparison of
              Nicknames", draft-ietf-precis-nickname-01 draft-ietf-precis-nickname-05 (work in
              progress), September November 2012.

   [I-D.ietf-precis-problem-statement]
              Sullivan,

   [I-D.ietf-precis-saslprepbis]
              Saint-Andre, P. and A. Melnikov, "Username and M. Blanchet, "Stringprep Revision Problem
              Statement", draft-ietf-precis-problem-statement-08 Password
              Preparation Algorithms", draft-ietf-precis-saslprepbis-00
              (work in progress), September February 2012.

   [I-D.ietf-xmpp-6122bis]
              Saint-Andre, P., "Extensible Messaging and Presence
              Protocol (XMPP): Address Format",
              draft-ietf-xmpp-6122bis-03 (work in progress),
              August 2012.

   [I-D.melnikov-precis-saslprepbis]
              Melnikov, A. and P. Saint-Andre, "Username and Password
              Preparation Algorithms",
              draft-melnikov-precis-saslprepbis-03 draft-ietf-xmpp-
              6122bis-05 (work in progress),
              September 2012. November 2013.

   [RFC2865]  Rigney, C., Willens, S., Rubens, A., and W. Simpson,
              "Remote Authentication Dial In User Service (RADIUS)", RFC
              2865, June 2000.

   [RFC3454]  Hoffman, P. and M. Blanchet, "Preparation of
              Internationalized Strings ("stringprep")", RFC 3454,
              December 2002.

   [RFC3490]  Faltstrom, P., Hoffman, P., and A. Costello,
              "Internationalizing Domain Names in Applications (IDNA)",
              RFC 3490, March 2003.

   [RFC3491]  Hoffman, P. and M. Blanchet, "Nameprep: A Stringprep
              Profile for Internationalized Domain Names (IDN)", RFC
              3491, March 2003.

   [RFC3629]  Yergeau, F., "UTF-8, a transformation format of ISO
              10646", STD 63, RFC 3629, November 2003.

   [RFC4422]  Melnikov, A. and K. Zeilenga, "Simple Authentication and
              Security Layer (SASL)", RFC 4422, June 2006.

   [RFC4510]  Zeilenga, K., "Lightweight Directory Access Protocol
              (LDAP): Technical Specification Road Map", RFC 4510, June
              2006.

   [RFC4690]  Klensin, J., Faltstrom, P., Karp, C., and IAB, "Review and
              Recommendations for Internationalized Domain Names
              (IDNs)", RFC 4690, September 2006.

   [RFC5226]  Narten, T. and H. Alvestrand, "Guidelines for Writing an
              IANA Considerations Section in RFCs", BCP 26, RFC 5226,
              May 2008.

   [RFC5234]  Crocker, D. and P. Overell, "Augmented BNF for Syntax
              Specifications: ABNF", STD 68, RFC 5234, January 2008.

   [RFC5246]  Dierks, T. and E. Rescorla, "The Transport Layer Security
              (TLS) Protocol Version 1.2", RFC 5246, August 2008.

   [RFC5890]  Klensin, J., "Internationalized Domain Names for
              Applications (IDNA): Definitions and Document Framework",
              RFC 5890, August 2010.

   [RFC5891]  Klensin, J., "Internationalized Domain Names in
              Applications (IDNA): Protocol", RFC 5891, August 2010.

   [RFC5892]  Faltstrom, P., "The Unicode Code Points and
              Internationalized Domain Names for Applications (IDNA)",
              RFC 5892, August 2010.

   [RFC5893]  Alvestrand, H. and C. Karp, "Right-to-Left Scripts for
              Internationalized Domain Names for Applications (IDNA)",
              RFC 5893, August 2010.

   [RFC5894]  Klensin, J., "Internationalized Domain Names for
              Applications (IDNA): Background, Explanation, and
              Rationale", RFC 5894, August 2010.

   [RFC5895]  Resnick, P. and P. Hoffman, "Mapping Characters for
              Internationalized Domain Names in Applications (IDNA)
              2008", RFC 5895, September 2010.

   [RFC6365]  Hoffman, P. and J. Klensin, "Terminology Used in
              Internationalization in the IETF", BCP 166, RFC 6365,
              September 2011.

   [RFC6885]  Blanchet, M. and A. Sullivan, "Stringprep Revision and
              Problem Statement for the Preparation and Comparison of
              Internationalized Strings (PRECIS)", RFC 6885, March 2013.

   [UAX11]    The Unicode Consortium, "Unicode Standard Annex #11: East
              Asian Width", September 2012,
              <http://unicode.org/reports/tr11/>.

   [UAX15]    The Unicode Consortium, "Unicode Standard Annex #15:
              Unicode Normalization Forms", September 2010, August 2012,
              <http://unicode.org/reports/tr15/>.

   [UAX9]     The Unicode Consortium, "Unicode Standard Annex #9:
              Unicode Bidirectional Algorithm", September 2010, 2012,
              <http://unicode.org/reports/tr9/>.

   [UTR36]    The Unicode Consortium, "Unicode Technical Report #36:
              Unicode Security Considerations", August 2010, July 2012,
              <http://unicode.org/reports/tr36/>.

   [UTR39]    The Unicode Consortium, "Unicode Technical Report #39:
              Unicode Security Mechanisms", August 2010, July 2012,
              <http://unicode.org/reports/tr39/>.

URIs

   [1]  <http://unicode.org/Public/UNIDATA/PropertyAliases.txt>

   [2]  <http://unicode.org/Public/UNIDATA/DerivedCoreProperties.txt>

Appendix A.  Codepoint Table

   WARNING: The following table is incomplete and very likely contains
   errors!

   If one applies the property calculation rules from Section 7 to the
   code points 0x0000 to 0x10FFFF in Unicode 6.1, the result is as shown
   in the following table, in Unicode Character Database (UCD) format.
   The columns of the table are as follows:

   1.  The code point or codepoint range.

   2.  The assignment for the code point or range, where the value is
       one of PVALID, DISALLOWED, UNASSIGNED, CONTEXTO, CONTEXTJ, or
       FREE_PVAL (which includes NAME_DIS). SAFE_DIS).

   3.  The name or names for the code point or range.

   This table is non-normative, and included only for illustrative
   purposes.  Please note that the strings displayed in the third column
   are not necessarily the formal name of the code point (as defined in
   [UNICODE]) because the fixed width of the RFC format necessitated
   truncation of many names.

   0000..001F  ; DISALLOWED  # <control>
   0020        ; FREE_PVAL   # SPACE
   0021..007E  ; PVALID      # EXCLAM MARK .. TILDE
   007F..009F  ; DISALLOWED  # <control>
   00A0..00A9  ; FREE_PVAL   # NO-BREAK SPACE .. COPYRIGHT SIGN
   00AA        ; PVALID      # FEMININE ORDINAL INDICATOR
   00AB..00AC  ; FREE_PVAL   # NO-BREAK SPACE .. NOT SIGN
   00AD        ; DISALLOWED  # SOFT HYPH
   00AE..00B6  ; FREE_PVAL   # REGISTERED SIGN .. PILCROW SIGN
   00B7        ; CONTEXTO    # MIDDLE DOT
   00B8..00BF  ; FREE_PVAL   # CEDILLA..INV QUEST IND
   00C0..00D6  ; PVALID      # LAT CAP LET A W GRAV..LAT CAP O
   00D7        ; FREE_PVAL   # MULTIPLICATION SIGN
   00D8..00F6  ; PVALID      # LAT CAP LET O W STROKE..LAT SM
   00F7        ; FREE_PVAL   # DIVISION SIGN
   00F8..0131  ; PVALID      # LAT SM LET O W STROKE..LAT SM LET
   0132..0133  ; FREE_PVAL   # LAT CAP LIG IJ..LAT SM LIB IJ
   0134..013E  ; PVALID      # LAT CAP LET J W CIRCUM..LAT SM LET
   013F..0140  ; FREE_PVAL   # LAT CAP LET L W MID DOT..LAT SM LET
   0141..0148  ; PVALID      # LAT CAP LET L W STROKE..LAT SM LET
   0149        ; FREE_PVAL   # LAT SM LET N PRECEDED BY APOS
   014A..017E  ; PVALID      # LAT CAP LET ENG..LAT SM LET Z W CA
   017F        ; FREE_PVAL   # LAT SM LET LONG S
   0180..01C3  ; PVALID      # LAT SM LET B W STROKE..LAT LET RETR
   01C4..01CC  ; FREE_PVAL   # LAT CAP LET DZ W CARON..LAT SM
   01CD..01F0  ; PVALID      # LAT CAP LET A W CARON..LAT SM LET J
   01F1..01F3  ; FREE_PVAL   # LAT CAP LET DZ..LAT SM LET DZ
   01F4..02AF  ; PVALID      # LAT CAP LET G W ACUTE..LAT SM
   02B0..02B8  ; FREE_PVAL   # MOD LET SM H..MOD LET SM Y
   02B9..02C1  ; PVALID      # MOD LET PRIME..MOD LET REV GLOT ST
   02C2..02C5  ; FREE_PVAL   # MOD LET L ARROW..MOD LET D ARROW
   02C6..02D1  ; PVALID      # MOD LET CIRCUM ACC..MOD LET HALF TR
   02D2..02EB  ; FREE_PVAL   # MOD LET CENT R HALF RING..MOD LET Y
   02EC        ; PVALID      # MOD LET VOICING
   02ED        ; FREE_PVAL   # MOD LET UNASPIRATED
   02EE        ; PVALID      # MOD LET DOUBLE APOS
   02EF..02FF  ; FREE_PVAL   # MOD LET LOW D ARR..MOD LET LOW L AR
   0300..0374  ; PVALID      # COMB GRAVE ACCENT..GREEK NUM SIGN
   0375        ; CONTEXTO    # GREEK LOW NUM SIGN
   0376..0377  ; PVALID      # GR CAP LET PAMPHYLIAN DIGAMMA..GR S
   0378..0379  ; UNASSIGNED  # <reserved>..<reserved>
   037A..037D  ; PVALID      # GR YPOGEGRAMMENI..GR SM REV DOT LUN
   037E        ; FREE_PVAL   # GREEK QUEST MARK
   037F..0383  ; UNASSIGNED  # <reserved>..<reserved>
   0384..0385  ; FREE_PVAL   # GREEK TONOS..GREEK DIALYTIKA TONOS
   0386        ; PVALID      # GR CAP LET ALPHA W TONOS
   0387        ; FREE_PVAL   # GREEK ANO TELEIA
   0388..038A  ; PVALID      # GR CAP LET EPSILON W TONOS..GR CAP
   038B        ; UNASSIGNED  # <reserved>
   038C        ; PVALID      # GREEK CAP LET OMICRON W TONOS
   038D        ; UNASSIGNED  # <reserved>
   038E..03A1  ; PVALID      # GR CAP LET EPSILON W TONOS..GR CAP
   03A2        ; UNASSIGNED  # <reserved>
   03A3..03CF  ; PVALID      # GREEK CAP LET SIGMA..GR CAP
   03D0..03D2  ; FREE_PVAL   # GR BETA SYM..GR UPSILON W HOOK
   03D3..03D4  ; PVALID      # GR UPSILON W ACUTE AND HOOK..GR UP
   03D5..03D6  ; FREE_PVAL   # GR PHI SYM..GR PI SYM
   03D7..03EF  ; PVALID      # GR KAI SYM..COPT SM LET DEI
   03F0..03F2  ; FREE_PVAL   # GR KAPPA SYM..GR LUNATE SIGMA
   03F3        ; PVALID      # GREEK LET YOT
   03F4..03F6  ; FREE_PVAL   # GR CAP THETA..GR REV LUNATE EPSILON
   03F7..03F8  ; PVALID      # GR CAP LET SHO..GR SM LET SHO
   03F9        ; FREE_PVAL   # GREEK CAP LUNATE SIGMA SYM
   03FA..0481  ; PVALID      # GR CAP LET SAN..CYR SML LET KOPPA
   0482        ; FREE_PVAL   # CYR THOUSANDS SIGN
   0483..0487  ; PVALID      # COMB CYR TITLO..COMB CYR POK
   0488..048A  ; FREE_PVAL   # COMB CYR HUNDRED THOUSANDS SIGN..C
   048B..0527  ; PVALID      # CYR SM LET SHORT I W TAIL..CYR S
   0528..0530  ; UNASSIGNED  # <reserved>..<reserved>
   0531..0556  ; PVALID      # ARM CAP LET AYB..ARM CAP LET FEH
   0557..0558  ; UNASSIGNED  # <reserved>..<reserved>
   0559        ; PVALID      # ARM MOD LET LEFT HALF RING
   055A..055F  ; FREE_PVAL   # ARM APOS..ARM ABBREV
   0560        ; UNASSIGNED  # <reserved>
   0561..0586  ; PVALID      # ARM SM LET AYB..ARMENIAN SM LE
   0587        ; FREE_PVAL   # ARM SM LIG ECH YIWN
   0588        ; UNASSIGNED  # <reserved>
   0589..058A  ; FREE_PVAL   # ARMENIAN FULL STOP..ARMENIAN HYPH
   058B..058E  ; UNASSIGNED  # <reserved>..<reserved>
   058F        ; FREE_PVAL   # ARMENIAN DRAM SIGN
   0590        ; UNASSIGNED  # <reserved>
   0591..05BD  ; PVALID      # HEBR ACC ETNAHTA..HEBR PNT ME
   05BE        ; FREE_PVAL   # HEBR PUNCT MAQAF
   05BF        ; PVALID      # HEBR PNT RAFE
   05C0        ; FREE_PVAL   # HEBR PUNCT PASEQ
   05C1..05C2  ; PVALID      # HEBR PNT SHIN DOT..HEBR PNT SIN DOT
   05C3        ; FREE_PVAL   # HEBR PUNCT SOF PASUQ
   05C4..05C5  ; PVALID      # HEBR MARK UP DOT..HEBR MARK LOW DOT
   05C6        ; FREE_PVAL   # HEBR PUNCT NUN HAFUKHA
   05C7        ; PVALID      # HEBR PNT QAMATS QATAN
   05C8..05CF  ; UNASSIGNED  # <reserved>..<reserved>
   05D0..05EA  ; PVALID      # HEBR LET ALEF..HEBR LET TAV
   05EB..05EF  ; UNASSIGNED  # <reserved>..<reserved>
   05F0..05F2  ; PVALID      # HEBR LIG YIDDISH DOUBLE VAV..HEBR L
   05F3..05F4  ; CONTEXTO    # HEBR PUNCT GERESH..HEBR PUNCTUATIO
   05F5..05FF  ; UNASSIGNED  # <reserved>..<reserved>
   0600..0604  ; DISALLOWED  # ARAB NUM SIGN..ARAB SIGN SAM
   0605        ; UNASSIGNED  # <reserved>..<reserved>
   0606..060F  ; FREE_PVAL   # AR-IND CUBE ROOT..ARAB SIGN MISRA
   0610..061A  ; PVALID      # ARAB SIGN SALLALLAHOU ALAYHE ..AR
   061B        ; FREE_PVAL   # ARAB SEMICOLON
   061C..061D  ; UNASSIGNED  # <reserved>..<reserved>
   061E..061F  ; FREE_PVAL   # ARAB TRIPLE DOT PUNCT MARK..ARAB Q
   0620        ; UNASSIGNED  # <reserved>
   0621..063F  ; PVALID      # ARAB LET HAMZA..ARAB LET FARSI YEH
   0640        ; DISALLOWED  # ARAB TATWEEL
   0641..065F  ; PVALID      # ARAB LET FEH..ARAB WAVY HAMZA BEL
   0660..0669  ; CONTEXTO    # AR-IND DIG ZERO..AR-IND DIG
   066A..066D  ; FREE_PVAL   # ARAB PCT SIGN..ARAB FIVE PNTED STA
   066E..0674  ; PVALID      # ARAB LET DOTLESS BEH..ARAB LET HIG
   0675..0678  ; FREE_PVAL   # ARAB LET HIGH HAMZA ALEF..ARAB LET
   0679..06D3  ; PVALID      # ARAB LET TTEH..ARAB LET YEH BARREE
   06D4        ; FREE_PVAL   # ARAB FULL STOP
   06D5..06DC  ; PVALID      # ARAB LET AE..ARAB SM HIGH SEEN
   06DD        ; DISALLOWED  # ARAB END OF AYAH
   06DE        ; FREE_PVAL   # ARAB START OF RUB EL HIZB
   06DF..06E8  ; PVALID      # ARAB SM HIGH ROUNDED ZERO..ARAB SM
   06E9        ; FREE_PVAL   # ARAB PLACE OF SAJDAH
   06EA..06EF  ; PVALID      # ARAB EMPTY CENTRE LOW STOP..ARAB LET
   06F0..06F9  ; CONTEXTO    # EXT AR-IND DIG ZERO..EXT A
   06FA..06FF  ; PVALID      # ARAB LET SHEEN W DOT BEL..ARAB
   0700..070D  ; FREE_PVAL   # SYR END OF PARA..SYR HARKLEAN AST
   070E        ; UNASSIGNED  # <reserved>
   070F        ; DISALLOWED  # SYR ABBR MARK
   0710..07B1  ; PVALID      # SYR LET ALAPH..THAANA LET N
   07B2..07BF  ; UNASSIGNED  # <reserved>..<reserved>
   07C0..07F5  ; PVALID      # NKO DIG ZERO..NKO LOW TONE APOS
   07F6..07F9  ; FREE_PVAL   # NKO SYM OO DENNEN..NKO EXCLAMATI
   07FA        ; DISALLOWED  # NKO LAJANYALAN
   07FB..07FF  ; UNASSIGNED  # <reserved>..<reserved>
   0800..082D  ; PVALID      # SAMAR LET ALAF..SAMAR MARK NEQUDA
   082E..082F  ; UNASSIGNED  # <reserved>..<reserved>
   0830..083E  ; FREE_PVAL   # SAMAR PUNCT NEQUDAA..SAMAR PUN
   083F        ; UNASSIGNED  # <reserved>
   0840..085B  ; PVALID      # MANDAIC LET HALQA..MANDAIC GEM
   085C..085D  ; UNASSIGNED  # <reserved>..<reserved>
   085E        ; FREE_PVAL   # MANDAIC PUNCTUATION
   08A0..08AC  ; PVALID      # ARAB LET BEH W SM V BEL..ARAB
   08AD..08E3  ; UNASSIGNED  # <reserved>..<reserved>
   08E4..08FE  ; PVALID      # ARAB CURLY FATHA..ARAB DAMMA W
   08FF        ; UNASSIGNED  # <reserved>
   0900..0963  ; PVALID      # DEVAN SIGN INV CANDRABINDU..DEVAN V
   0964..0965  ; FREE_PVAL   # DEVAN DANDA..DEVAN DOUBLE DANDA
   0966..096F  ; PVALID      # DEVAN DIG ZERO..DEVAN DIG NINE
   0970        ; FREE_PVAL   # DEVAN ABBR SIGN
   0971..097F  ; PVALID      # DEVAN SIGN HIGH SPACING DOT..DEVAN
   0980        ; UNASSIGNED  # <reserved>
   0981..0983  ; PVALID      # BENG SIGN CANDRABINDU..BENG SIGN VISAR
   0984        ; UNASSIGNED  # <reserved>
   0985..098C  ; PVALID      # BENG LET A..BENG LET VOC L
   098D..098E  ; UNASSIGNED  # <reserved>..<reserved>
   098F..0990  ; PVALID      # BENG LET E..BENG LET AI
   0991..0992  ; UNASSIGNED  # <reserved>..<reserved>
   0993..09A8  ; PVALID      # BENG LET O..BENG LET NA
   09A9        ; UNASSIGNED  # <reserved>
   09AA..09B0  ; PVALID      # BENG LET PA..BENG LET RA
   09B1        ; UNASSIGNED  # <reserved>
   09B2        ; PVALID      # BENG LET LA
   09B3..09B5  ; UNASSIGNED  # <reserved>..<reserved>
   09B6..09B9  ; PVALID      # BENG LET SHA..BENG LET HA
   09BA..09BB  ; UNASSIGNED  # <reserved>..<reserved>
   09BC..09C4  ; PVALID      # BENG SIGN NUKTA..BENG VOW SIGN VOCAL
   09C5..09C6  ; UNASSIGNED  # <reserved>..<reserved>
   09C7..09C8  ; PVALID      # BENG VOW SIGN E..BENG VOW SIGN AI
   09C9..09CA  ; UNASSIGNED  # <reserved>..<reserved>
   09CB..09CE  ; PVALID      # BENG VOW SIGN O..BENG LET KHANDA
   09CF..09D6  ; UNASSIGNED  # <reserved>..<reserved>
   09D7        ; PVALID      # BENG AU LEN MARK
   09D8..09DB  ; UNASSIGNED  # <reserved>..<reserved>
   09DC..09DD  ; PVALID      # BENG LET RRA..BENG LET RHA
   09DE        ; UNASSIGNED  # <reserved>
   09DF..09E3  ; PVALID      # BENG LET YYA..BENG VOW SIG
   09E4..09E5  ; UNASSIGNED  # <reserved>..<reserved>
   09E6..09F1  ; PVALID      # BENG DIG ZERO..BENG LET RA W L
   09F2..09F3  ; FREE_PVAL   # BENG RUPEE MARK..BENG RUPEE SIGN
   09F4..09FB  ; DISALLOWED  # BENG CURR NUM ONE..BENG GANDA MARK
   09FC..0A00  ; UNASSIGNED  # <reserved>..<reserved>
   0A01..0A03  ; PVALID      # GURMUKHI SIGN ADAK BINDI..GURMUKHI
   0A04        ; UNASSIGNED  # <reserved>
   0A05..0A0A  ; PVALID      # GURMUKHI LET A..GURMUKHI LET UU
   0A0B..0A0E  ; UNASSIGNED  # <reserved>..<reserved>
   0A0F..0A10  ; PVALID      # GURMUKHI LET EE..GURMUKHI LET AI
   0A11..0A12  ; UNASSIGNED  # <reserved>..<reserved>
   0A13..0A28  ; PVALID      # GURMUKHI LET OO..GURMUKHI LET NA
   0A29        ; UNASSIGNED  # <reserved>
   0A2A..0A30  ; PVALID      # GURMUKHI LET PA..GURMUKHI LET RA
   0A31        ; UNASSIGNED  # <reserved>
   0A32..0A33  ; PVALID      # GURMUKHI LET LA..GURMUKHI LET LLA
   0A34        ; UNASSIGNED  # <reserved>
   0A35.OA36   ; PVALID      # GURMUKHI LET VA..GURMUKHI LET SHA
   0A37        ; UNASSIGNED  # <reserved>
   0A38..0A39  ; PVALID      # GURMUKHI LET SA..GURMUKHI LET HA
   0A3A..0A3B  ; UNASSIGNED  # <reserved>..<reserved>
   0A3C        ; PVALID      # GURMUKHI SIGN NUKTA
   0A3D        ; UNASSIGNED  # <reserved>
   0A3E..0A42  ; PVALID      # GURMUKHI VOW SIGN AA..GURMUKHI V
   0A43..0A46  ; UNASSIGNED  # <reserved>..<reserved>
   0A47..0A48  ; PVALID      # GURMUKHI VOW SIGN EE..GURMUKHI V
   0A49..0A4A  ; UNASSIGNED  # <reserved>..<reserved>
   0A4B..0A4D  ; PVALID      # GURMUKHI VOW SIGN OO..GURMUKHI S
   0A4E..0A50  ; UNASSIGNED  # <reserved>..<reserved>
   0A51        ; PVALID      # GURMUKHI SIGN UDAAT
   0A52..0A58  ; UNASSIGNED  # <reserved>..<reserved>
   0A59..0A5B  ; PVALID      # GURMUKHI LET KHHA..GURMUKHI LET RRA
   0A5D        ; UNASSIGNED  # <reserved>
   0A5E        ; PVALID      # GURMUKHI LET FA
   0A5F..0A65  ; UNASSIGNED  # <reserved>..<reserved>
   0A66..0A75  ; PVALID      # GURMUKHI DIG ZERO..GURMUKHI SIGN YA
   0A76..0A80  ; UNASSIGNED  # <reserved>..<reserved>
   0A81..0A83  ; PVALID      # GUJARATI SIGN CANDRABINDU..GUJARATI
   0A84        ; UNASSIGNED  # <reserved>
   0A85..0A8D  ; PVALID      # GUJARATI LET A..GUJARATI VOW CAND
   0A8E        ; UNASSIGNED  # <reserved>
   0A8F..0A91  ; PVALID      # GUJARATI LET E..GUJARATI VOW CAND
   0A92        ; UNASSIGNED  # <reserved>
   0A93..0AA8  ; PVALID      # GUJARATI LET O..GUJARATI LET NA
   0AA9        ; UNASSIGNED  # <reserved>
   0AAA..0AB0  ; PVALID      # GUJARATI LET PA..GUJARATI LET RA
   0AB1        ; UNASSIGNED  # <reserved>
   0AB2..0AB3  ; PVALID      # GUJARATI LET LA..GUJARATI LET LLA
   0AB4        ; UNASSIGNED  # <reserved>
   0AB5..0AB9  ; PVALID      # GUJARATI LET VA..GUJARATI LET HA
   0ABA..0ABB  ; UNASSIGNED  # <reserved>..<reserved>
   0ABC..0AC5  ; PVALID      # GUJARATI SIGN NUKTA..GUJARATI VOW
   0AC6        ; UNASSIGNED  # <reserved>
   0AC7..0AC9  ; PVALID      # GUJARATI VOW SIGN E..GUJARATI VOW
   0ACA        ; UNASSIGNED  # <reserved>
   0ACB..0ACD  ; PVALID      # GUJARATI VOW SIGN O..GUJARATI SIG
   0ACE..0ACF  ; UNASSIGNED  # <reserved>..<reserved>
   0AD0        ; PVALID      # GUJARATI OM
   0AD1..0ADF  ; UNASSIGNED  # <reserved>..<reserved>
   0AE0..0AE3  ; PVALID      # GUJARATI LET VOC RR..GUJARATI V
   0AE4..0AE5  ; UNASSIGNED  # <reserved>..<reserved>
   0AE6..0AEF  ; PVALID      # GUJARATI DIG ZERO..GUJARATI DIG NINE
   0AF0        ; UNASSIGNED  # <reserved>
   0AF1        ; FREE_PVAL   # GUJARATI RUPEE SIGN
   0AF2..0B00  ; UNASSIGNED  # <reserved>..<reserved>
   0B01..0B03  ; PVALID      # ORIYA SIGN CANDRABINDU..ORIYA SIGN
   0B04        ; UNASSIGNED  # <reserved>
   0B05..0B0C  ; PVALID      # ORIYA LET A..ORIYA LET VOC L
   0B0D..0B0E  ; UNASSIGNED  # <reserved>..<reserved>
   0B0F..0B10  ; PVALID      # ORIYA LET E..ORIYA LET AI
   0B11..0B12  ; UNASSIGNED  # <reserved>..<reserved>
   0B13..0B28  ; PVALID      # ORIYA LET O..ORIYA LET NA
   0B29        ; UNASSIGNED  # <reserved>
   0B2A..0B30  ; PVALID      # ORIYA LET PA..ORIYA LET RA
   0B31        ; UNASSIGNED  # <reserved>
   0B32..0B33  ; PVALID      # ORIYA LET LA..ORIYA LET LLA
   0B34        ; UNASSIGNED  # <reserved>
   0B35..0B39  ; PVALID      # ORIYA LET VA..ORIYA LET HA
   0B3A..0B3B  ; UNASSIGNED  # <reserved>..<reserved>
   0B3C..0B44  ; PVALID      # ORIYA SIGN NUKTA..ORIYA VOW SIGN
   0B45..0B46  ; UNASSIGNED  # <reserved>..<reserved>
   0B47..0B48  ; PVALID      # ORIYA VOW SIGN E..ORIYA VOW SIG
   0B49..0B4A  ; UNASSIGNED  # <reserved>..<reserved>
   0B4B..0B4D  ; PVALID      # ORIYA VOW SIGN O..ORIYA SIGN VIRA
   0B4E..0B55  ; UNASSIGNED  # <reserved>..<reserved>
   0B56..0B57  ; PVALID      # ORIYA AI LEN MARK..ORIYA AU LENG
   0B58..0B5B  ; UNASSIGNED  # <reserved>..<reserved>
   0B5C..0B5D  ; PVALID      # ORIYA LET RRA..ORIYA LET RHA
   0B5E        ; UNASSIGNED  # <reserved>
   0B5F..0B63  ; PVALID      # ORIYA LET YYA..ORIYA VOW SIGN VOCA
   0B64..0B65  ; UNASSIGNED  # <reserved>..<reserved>
   0B66..0B6F  ; PVALID      # ORIYA DIG ZERO..ORIYA DIG NINE
   0B70        ; FREE_PVAL   # ORIYA ISSHAR
   0B71        ; PVALID      # ORIYA LET WA
   0B72..0B77  ; FREE_PVAL   # ORIYA FRACT ONE QUART..ORIYA FRACT
   0B78..0B81  ; UNASSIGNED  # <reserved>..<reserved>
   0B82..0B83  ; PVALID      # TAMIL SIGN ANUSVARA..TAMIL SIGN VIS
   0B84        ; UNASSIGNED  # <reserved>
   0B85..0B8A  ; PVALID      # TAMIL LET A..TAMIL LET UU
   0B8B..0B8D  ; UNASSIGNED  # <reserved>..<reserved>
   0B8E..0B90  ; PVALID      # TAMIL LET E..TAMIL LET AI
   0B91        ; UNASSIGNED  # <reserved>
   0B92..0B95  ; PVALID      # TAMIL LET O..TAMIL LET KA
   0B96..0B98  ; UNASSIGNED  # <reserved>..<reserved>
   0B99..0B9A  ; PVALID      # TAMIL LET NGA..TAMIL LET CA
   0B9B        ; UNASSIGNED  # <reserved>
   0B9C        ; PVALID      # TAMIL LET JA
   0B9D        ; UNASSIGNED  # <reserved>
   0B9E..0B9F  ; PVALID      # TAMIL LET NYA..TAMIL LET TTA
   0BA0..0BA2  ; UNASSIGNED  # <reserved>..<reserved>
   0BA3..0BA4  ; PVALID      # TAMIL LET NNA..TAMIL LET TA
   0BA5..0BA7  ; UNASSIGNED  # <reserved>..<reserved>
   0BA8..0BAA  ; PVALID      # TAMIL LET NA..TAMIL LET PA
   0BAB..0BAD  ; UNASSIGNED  # <reserved>..<reserved>
   0BAE..0BB9  ; PVALID      # TAMIL LET MA..TAMIL LET HA
   0BBA..0BBD  ; UNASSIGNED  # <reserved>..<reserved>
   0BBE..0BC2  ; PVALID      # TAMIL VOW SIGN AA..TAMIL VOW SI
   0BC3..0BC5  ; UNASSIGNED  # <reserved>..<reserved>
   0BC6..0BC8  ; PVALID      # TAMIL VOW SIGN E..TAMIL VOW SIG
   0BC9        ; UNASSIGNED  # <reserved>
   0BCA..0BCD  ; PVALID      # TAMIL VOW SIGN O..TAMIL SIGN VIRA
   0BCE..0BCF  ; UNASSIGNED  # <reserved>..<reserved>
   0BD0        ; PVALID      # TAMIL OM
   0BD1..0BD6  ; UNASSIGNED  # <reserved>..<reserved>
   0BD7        ; PVALID      # TAMIL AU LEN MARK
   0BD8..0BE5  ; UNASSIGNED  # <reserved>..<reserved>
   0BE6..0BEF  ; PVALID      # TAMIL DIG ZERO..TAMIL DIG NINE
   0BF0..0BFA  ; FREE_PVAL   # TAMIL NUM TEN..TAMIL NUM SIGN
   0BFB..0C00  ; UNASSIGNED  # <reserved>..<reserved>
   0C01..0C03  ; PVALID      # TELUGU SIGN CANDRABINDU..TELUGU SIG
   0C04        ; UNASSIGNED  # <reserved>
   0C05..0C0C  ; PVALID      # TELUGU LET A..TELUGU LET VOC L
   0C0D        ; UNASSIGNED  # <reserved>
   0C0E..0C10  ; PVALID      # TELUGU LET E..TELUGU LET AI
   0C11        ; UNASSIGNED  # <reserved>
   0C12..0C28  ; PVALID      # TELUGU LET O..TELUGU LET NA
   0C29        ; UNASSIGNED  # <reserved>
   0C2A..0C33  ; PVALID      # TELUGU LET PA..TELUGU LET LLA
   0C34        ; UNASSIGNED  # <reserved>
   0C35..0C39  ; PVALID      # TELUGU LET VA..TELUGU LET HA
   0C3A..0C3C  ; UNASSIGNED  # <reserved>..<reserved>
   0C3D..0C44  ; PVALID      # TELUGU SIGN AVAGRAHA..TELUGU VOW SI
   0C45        ; UNASSIGNED  # <reserved>
   0C46..0C48  ; PVALID      # TELUGU VOW SIGN E..TELUGU VOW SIGN
   0C49        ; UNASSIGNED  # <reserved>
   0C4A..0C4D  ; PVALID      # TELUGU VOW SIGN O..TELUGU SIGN VIRA
   0C4E..0C54  ; UNASSIGNED  # <reserved>..<reserved>
   0C55..0C56  ; PVALID      # TELUGU LEN MARK..TELUGU AI LEN MARK
   0C57        ; UNASSIGNED  # <reserved>
   0C58..0C59  ; PVALID      # TELUGU LET TSA..TELUGU LET DZA
   0C5A..0C5F  ; UNASSIGNED  # <reserved>..<reserved>
   0C60..0C63  ; PVALID      # TELUGU LET VOC RR..TELUGU VOW S
   0C64..0C65  ; UNASSIGNED  # <reserved>..<reserved>
   0C66..0C6F  ; PVALID      # TELUGU DIG ZERO..TELUGU DIG NINE
   0C70..0C77  ; UNASSIGNED  # <reserved>..<reserved>
   0C78..0C7E  ; DISALLOWED  # TELUGU FRACTION DIG ZERO FOR ODD PO
   0C7F        ; FREE_PVAL   # TELUGU SIGN TUUMU
   0C80..0C81  ; UNASSIGNED  # <reserved>..<reserved>
   0C82..0C83  ; PVALID      # KANNADA SIGN ANUSVARA..KANNADA SIGN
   0C84        ; UNASSIGNED  # <reserved>
   0C85..0C8C  ; PVALID      # KANNADA LET A..KANNADA LET VOC L
   0C8D        ; UNASSIGNED  # <reserved>
   0C8E..0C90  ; PVALID      # KANNADA LET E..KANNADA LET AI
   0C91        ; UNASSIGNED  # <reserved>
   0C92..0CA8  ; PVALID      # KANNADA LET O..KANNADA LET NA
   0CA9        ; UNASSIGNED  # <reserved>
   0CAA..0CB3  ; PVALID      # KANNADA LET PA..KANNADA LET LLA
   0CB4        ; UNASSIGNED  # <reserved>
   0CB5..0CB9  ; PVALID      # KANNADA LET VA..KANNADA LET HA
   0CBA..0CBB  ; UNASSIGNED  # <reserved>..<reserved>
   0CBC..0CC4  ; PVALID      # KANNADA SIGN NUKTA..KANNADA VOW SIG
   0CC5        ; UNASSIGNED  # <reserved>
   0CC6..0CC8  ; PVALID      # KANNADA VOW SIGN E..KANNADA VOW SIG
   0CC9        ; UNASSIGNED  # <reserved>
   0CCA..0CCD  ; PVALID      # KANNADA VOW SIGN O..KANNADA SIGN VI
   0CCE..0CD4  ; UNASSIGNED  # <reserved>..<reserved>
   0CD5..0CD6  ; PVALID      # KANNADA LEN MARK..KANNADA AI LEN MA
   0CD7..0CDD  ; UNASSIGNED  # <reserved>..<reserved>
   0CDE        ; PVALID      # KANNADA LET FA
   0CDF        ; UNASSIGNED  # <reserved>
   0CE0..0CE3  ; PVALID      # KANNADA LET VOC RR..KANNADA VOW SIG
   0CE4..0CE5  ; UNASSIGNED  # <reserved>..<reserved>
   0CE6..0CEF  ; PVALID      # KANNADA DIG ZERO..KANNADA DIG NINE
   0CF0        ; UNASSIGNED  # <reserved>
   0CF1..0CF2  ; DISALLOWED  # KANNADA SIGN JIHVAMULIYA..KANNADA S
   0CF3..0D01  ; UNASSIGNED  # <reserved>..<reserved>
   0D02..0D03  ; PVALID      # MALAY SIGN ANUSVARA..MALAY SIGN VIS
   0D04        ; UNASSIGNED  # <reserved>
   0D05..0D0C  ; PVALID      # MALAY LET A..MALAY LET VOC
   0D0D        ; UNASSIGNED  # <reserved>
   0D0E..0D10  ; PVALID      # MALAY LET E..MALAY LET AI
   0D11        ; UNASSIGNED  # <reserved>
   0D12..0D3A  ; PVALID      # MALAY LET O..MALAY LET TTTA
   0D3B..0D3C  ; UNASSIGNED  # <reserved>..<reserved>
   0D3D..0D44  ; PVALID      # MALAY SIGN AVAGRAHA..MALAY VOW SIG
   0D45        ; UNASSIGNED  # <reserved>
   0D46..0D48  ; PVALID      # MALAY VOW SIGN E..MALAY VOW SIGN
   0D49        ; UNASSIGNED  # <reserved>
   0D4A..0D4E  ; PVALID      # MALAY VOW SIGN O..MALAY LET DOT REP
   0D4F..0D56  ; UNASSIGNED  # <reserved>..<reserved>
   0D57        ; PVALID      # MALAY AU LEN MARK
   0D58..0D59  ; UNASSIGNED  # <reserved>..<reserved>
   0D60..0D63  ; PVALID      # MALAY LET VOC RR..MALAY VOW
   0D64..0D65  ; UNASSIGNED  # <reserved>..<reserved>
   0D66..0D6F  ; PVALID      # MALAY DIG ZERO..MALAY DIG NINE
   0D70..0D75  ; FREE_PVAL   # MALAY NUM TEN..MALAY FRACTION THR
   0D76..0D78  ; UNASSIGNED  # <reserved>..<reserved>
   0D79        ; FREE_PVAL   # MALAY DATE MARK
   0D7A..0D7F  ; PVALID      # MALAY LET CHILLU NN..MALAY LET
   0D80..0D81  ; UNASSIGNED  # <reserved>..<reserved>
   0D82..0D83  ; PVALID      # SINH SIGN ANUSVARAYA..SINH SIGN VIS
   0D84        ; UNASSIGNED  # <reserved>
   0D85..0D96  ; PVALID      # SINH LET AYANNA..SINH LET AUYANN
   0D97..0D99  ; UNASSIGNED  # <reserved>..<reserved>
   0D9A..0DB1  ; PVALID      # SINH LET ALPAPRAANA KAYANNA..SINH L
   0DB2        ; UNASSIGNED  # <reserved>
   0DB3..0DBB  ; PVALID      # SINH LET SANYAKA DAYANNA..SINH LETT
   0DBC        ; UNASSIGNED  # <reserved>
   0DBD        ; PVALID      # SINH LET DANTAJA LAYANNA
   0DBE..0DBF  ; UNASSIGNED  # <reserved>..<reserved>
   0DC0..0DC6  ; PVALID      # SINH LET VAYANNA..SINH LET FAYAN
   0DC7..0DC9  ; UNASSIGNED  # <reserved>..<reserved>
   0DCA        ; PVALID      # SINH SIGN AL-LAKUNA
   0DCB..0DCE  ; UNASSIGNED  # <reserved>..<reserved>
   0DCF..0DD4  ; PVALID      # SINH VOW SIGN AELA-PILLA..SINH VOW
   0DD5        ; UNASSIGNED  # <reserved>
   0DD6        ; PVALID      # SINH VOW SIGN DIGA PAA-PILLA
   0DD7        ; UNASSIGNED  # <reserved>
   0DD8..0DDF  ; PVALID      # SINH VOW SIGN GAETTA-PILLA..SINH VO
   0DE0..0DF1  ; UNASSIGNED  # <reserved>..<reserved>
   0DF2..0DF3  ; PVALID      # SINH VOW SIGN DIGA GAETTA-PILLA..SI
   0DF4        ; FREE_PVAL   # SINH PUNCT KUNDDALIYA
   0DF5..0E00  ; UNASSIGNED  # <reserved>..<reserved>
   0E01..0E32  ; PVALID      # THAI CHAR KO KAI..THAI CHAR SARA A
   0E33        ; FREE_PVAL   # THAI CHAR SARA AM
   0E34..0E3A  ; PVALID      # THAI CHAR SARA I..THAI CHAR PHINTH
   0E3B..0E3E  ; UNASSIGNED  # <reserved>..<reserved>
   0E3F        ; FREE_PVAL   # THAI CURRENCY SYM BAHT
   0E40..0E4E  ; PVALID      # THAI CHAR SARA E..THAI CHAR YAMAKK
   0E4F        ; FREE_PVAL   # THAI CHAR FONGMAN
   0E50..0E59  ; PVALID      # THAI DIG ZERO..THAI DIG NINE
   0E5A..0E5B  ; FREE_PVAL   # THAI CHAR ANGKHANKHU..THAI CHAR KH
   0E5C..0E80  ; UNASSIGNED  # <reserved>..<reserved>
   0E81..0E82  ; PVALID      # LAO LET KO..LAO LET KHO SUNG
   0E83        ; UNASSIGNED  # <reserved>
   0E84        ; PVALID      # LAO LET KHO TAM
   0E85..0E86  ; UNASSIGNED  # <reserved>..<reserved>
   0E87..0E88  ; PVALID      # LAO LET NGO..LAO LET CO
   0E89        ; UNASSIGNED  # <reserved>
   0E8A        ; PVALID      # LAO LET SO TAM
   0E8B..0E8C  ; UNASSIGNED  # <reserved>..<reserved>
   0E8D        ; PVALID      # LAO LET NYO
   0E8E..0E93  ; UNASSIGNED  # <reserved>..<reserved>
   0E94..0E97  ; PVALID      # LAO LET DO..LAO LET THO TAM
   0E98        ; UNASSIGNED  # <reserved>
   0E99..0E9F  ; PVALID      # LAO LET NO..LAO LET FO SUNG
   0EA0        ; UNASSIGNED  # <reserved>
   0EA1..0EA3  ; PVALID      # LAO LET MO..LAO LET LO LING
   0EA4        ; UNASSIGNED  # <reserved>
   0EA5        ; PVALID      # LAO LET LO LOOT
   0EA6        ; UNASSIGNED  # <reserved>
   0EA7        ; PVALID      # LAO LET WO
   0EA8..0EA9  ; UNASSIGNED  # <reserved>..<reserved>
   0EAA..0EAB  ; PVALID      # LAO LET SO SUNG..LAO LET HO SUNG
   0EAC        ; UNASSIGNED  # <reserved>
   0EAD..0EB2  ; PVALID      # LAO LET O..LAO VOW SIGN AA
   0EB3        ; FREE_PVAL   # LAO VOW SIGN AM
   0EB4..0EB9  ; PVALID      # LAO VOW SIGN I..LAO VOW SIGN UU
   0EBA        ; UNASSIGNED  # <reserved>
   0EBB..0EBD  ; PVALID      # LAO VOW SIGN MAI KON..LAO SEMIVOW SIG
   0EBE..0EBF  ; UNASSIGNED  # <reserved>..<reserved>
   0EC0..0EC4  ; PVALID      # LAO VOW SIGN E..LAO VOW SIGN AI
   0EC5        ; UNASSIGNED  # <reserved>
   0EC6        ; PVALID      # LAO KO LA
   0EC7        ; UNASSIGNED  # <reserved>
   0EC8..0ECD  ; PVALID      # LAO TONE MAI EK..LAO NIGGAHITA
   0ECE..0ECF  ; UNASSIGNED  # <reserved>..<reserved>
   0ED0..0ED9  ; PVALID      # LAO DIG ZERO..LAO DIG NINE
   0EDA..0EDB  ; UNASSIGNED  # <reserved>..<reserved>
   0EDC..0EDD  ; FREE_PVAL   # LAO HO NO..LAO HO MO
   0EDE..0F00  ; PVALID      # LAO LET KHMU GO..TIB SYL OM
   0F01..0F0A  ; FREE_PVAL   # TIB MARK GTER YIG MGO TRUNC A..TIB
   0F0B        ; PVALID      # TIB MARK INTERSYLLABIC TSHEG
   0F0C..0F17  ; FREE_PVAL   # TIB MARK DELIMITER TSHEG BSTAR..TIB
   0F18..0F19  ; PVALID      # TIB ASTROLOGICAL SIGN -KHYUD PA..TIB
   0F1A..0F1F  ; FREE_PVAL   # TIB SIGN RDEL DKAR GCIG..TIB SIGN RD
   0F20..0F29  ; PVALID      # TIB DIG ZERO..TIB DIG NINE
   0F2A..0F34  ; FREE_PVAL   # TIB DIG HALF ONE..TIB MARK BSDUS R
   0F35        ; PVALID      # TIB MARK NGAS BZUNG NYI ZLA
   0F36        ; FREE_PVAL   # TIB MARK CARET DZUD RTAGS BZHI MIG C
   0F37        ; PVALID      # TIB MARK NGAS BZUNG SGOR RTAGS
   0F38        ; FREE_PVAL   # TIB MARK CHE MGO
   0F39        ; PVALID      # TIB MARK TSA PHRU
   0F3A..0F3D  ; FREE_PVAL   # TIB MARK GUG RTAGS GYON..TIB MARK AN
   0F3E..0F42  ; PVALID      # TIB SIGN YAR TSHES..TIB LET GA
   0F43        ; FREE_PVAL   # TIB LET GHA
   0F44..0F47  ; PVALID      # TIB LET NGA..TIB LET JA
   0F48        ; UNASSIGNED  # <reserved>
   0F49..0F4C  ; PVALID      # TIB LET NYA..TIB LET DDA
   0F4D        ; FREE_PVAL   # TIB LET DDHA
   0F4E..0F51  ; PVALID      # TIB LET NNA..TIB LET DA
   0F52        ; FREE_PVAL   # TIB LET DHA
   0F53..0F56  ; PVALID      # TIB LET NA..TIB LET BA
   0F57        ; FREE_PVAL   # TIB LET BHA
   0F58..0F5B  ; PVALID      # TIB LET MA..TIB LET DZA
   0F5C        ; FREE_PVAL   # TIB LET DZHA
   0F5D..0F68  ; PVALID      # TIB LET WA..TIB LET A
   0F69        ; FREE_PVAL   # TIB LET KSSA
   0F6A..0F6C  ; PVALID      # TIB LET FIXED-FORM RA..TIB LET
   0F6D..0F70  ; UNASSIGNED  # <reserved>..<reserved>
   0F71..0F72  ; PVALID      # TIB VOW SIGN AA..TIB VOW SIGN I
   0F73        ; FREE_PVAL   # TIB VOW SIGN II
   0F74        ; PVALID      # TIB VOW SIGN U
   0F75..0F79  ; FREE_PVAL   # TIB VOW SIGN UU..TIB VOW SIGN VO
   0F7A..0F80  ; PVALID      # TIB VOW SIGN E..TIB VOW SIGN REV
   0F81        ; FREE_PVAL   # TIB VOW SIGN REV II
   0F82..0F84  ; PVALID      # TIB SIGN NYI ZLA NAA DA..TIB MARK H
   0F85        ; FREE_PVAL   # TIB MARK PALUTA
   0F86..0F8F  ; PVALID      # TIB SIGN LCI RTAGS..TIB SUBJOIN S
   0F90..0F92  ; PVALID      # TIB SUBJOIN LET KA..TIB SUBJOIN
   0F93        ; FREE_PVAL   # TIB SUBJOIN LET GHA
   0F94..0F97  ; PVALID      # TIB SUBJOIN LET NGA..TIB SUBJOI
   0F98        ; UNASSIGNED  # <reserved>
   0F99..0F9C  ; PVALID      # TIB SUBJOIN LET NYA..TIB SUBJOI
   0F9D        ; FREE_PVAL   # TIB SUBJOIN LET DDHA
   0F9E..0FA1  ; PVALID      # TIB SUBJOIN LET NNA..TIB SUBJOI
   0FA2        ; FREE_PVAL   # TIB SUBJOIN LET DHA
   0FA3..0FA6  ; PVALID      # TIB SUBJOIN LET NA..TIB SUBJOIN
   0FA7        ; FREE_PVAL   # TIB SUBJOIN LET BHA
   0FA8..0FAB  ; PVALID      # TIB SUBJOIN LET MA..TIB SUBJOIN
   0FAC        ; FREE_PVAL   # TIB SUBJOIN LET DZHA
   0FAD..0FB8  ; PVALID      # TIB SUBJOIN LET WA..TIB SUBJOIN
   0FB9        ; FREE_PVAL   # TIB SUBJOIN LET KSSA
   0FBA..0FBC  ; PVALID      # TIB SUBJOIN LET FIXED-FORM WA..TI
   0FBD        ; UNASSIGNED  # <reserved>
   0FBE..0FC5  ; FREE_PVAL   # TIB KU RU KHA..TIB SYM RDO RJE
   0FC6        ; PVALID      # TIB SYM PADMA GDAN
   0FC7..0FCC  ; FREE_PVAL   # TIB SYM RDO RJE RGYA GRAM..TIB SY
   0FCD        ; UNASSIGNED  # <reserved>
   0FCE..0FDA  ; DISALLOWED  # TIB SIGN RDEL NAG RDEL DKAR..TIB MA
   0FDB..0FFF  ; UNASSIGNED  # <reserved>..<reserved>
   1000..1049  ; PVALID      # MYAN LET KA..MYAN DIG NINE
   104A..104F  ; FREE_PVAL   # MYAN SIGN LITTLE SECTION..MYAN SYM
   1050..109D  ; PVALID      # MYAN LET SHA..MYAN VOW SIGN AITON
   109E..109F  ; FREE_PVAL   # MYAN SYM SHAN ONE..MYAN SYM SHAN EX
   10A0..10C5  ; PVALID      # GEORG CAP LET AN..GEORG CAP LET HOE
   10C6        ; UNASSIGNED  # <reserved>
   10C7        ; FREE_PVAL   # GEORG CAP LET YN
   10C8..10CC  ; UNASSIGNED  # <reserved>..<reserved>
   10CD        ; PVALID      # GEORG CAP LET AEN
   10CE..10CF  ; UNASSIGNED  # <reserved>..<reserved>
   10D0..10FA  ; PVALID      # GEORG LET AN..GEORG LET AIN
   10FB        ; FREE_PVAL   # GEORG PARA SEP
   10FC..10FF  ; PVALID      # MOD LET GEORG AEN..GEORG LET LABIAL
   1100..11FF  ; DISALLOWED  # HANGUL CHO KIYEOK..HANGUL JONG SSA
   1200..1248  ; PVALID      # ETHI SYL HA..ETHI SYL QWA
   1249        ; UNASSIGNED  # <reserved>
   124A..124D  ; PVALID      # ETHI SYL QWI..ETHI SYL QWE
   124E..124F  ; UNASSIGNED  # <reserved>..<reserved>
   1250..1256  ; PVALID      # ETHI SYL QHA..ETHI SYL QHO
   1257        ; UNASSIGNED  # <reserved>
   1258        ; PVALID      # ETHI SYL QHWA
   1259        ; UNASSIGNED  # <reserved>
   125A..125D  ; PVALID      # ETHI SYL QHWI..ETHI SYL QH
   125E..125F  ; UNASSIGNED  # <reserved>..<reserved>
   1260..1288  ; PVALID      # ETHI SYL BA..ETHI SYL XWA
   1289        ; UNASSIGNED  # <reserved>
   128A..128D  ; PVALID      # ETHI SYL XWI..ETHI SYL XWE
   128E..128F  ; UNASSIGNED  # <reserved>..<reserved>
   1290..12B0  ; PVALID      # ETHI SYL NA..ETHI SYL KWA
   12B1        ; UNASSIGNED  # <reserved>
   12B2..12B5  ; PVALID      # ETHI SYL KWI..ETHI SYL KWE
   12B6..12B7  ; UNASSIGNED  # <reserved>..<reserved>
   12B8..12BE  ; PVALID      # ETHI SYL KXA..ETHI SYL KXO
   12BF        ; UNASSIGNED  # <reserved>
   12C0        ; PVALID      # ETHI SYL KXWA
   12C1        ; UNASSIGNED  # <reserved>
   12C2..12C5  ; PVALID      # ETHI SYL KXWI..ETHI SYL KX
   12C6..12C7  ; UNASSIGNED  # <reserved>..<reserved>
   12C8..12D6  ; PVALID      # ETHI SYL WA..ETHI SYL PHAR
   12D7        ; UNASSIGNED  # <reserved>
   12D8..1310  ; PVALID      # ETHI SYL ZA..ETHI SYL GWA
   1311        ; UNASSIGNED  # <reserved>
   1312..1315  ; PVALID      # ETHI SYL GWI..ETHI SYL GWE
   1316..1317  ; UNASSIGNED  # <reserved>..<reserved>
   1318..135A  ; PVALID      # ETHI SYL GGA..ETHI SYL FYA
   135B..135C  ; UNASSIGNED  # <reserved>..<reserved>
   135D..135F  ; PVALID      # ETHI COMB GEM AND VOW..ETHI COMB GE
   1360..137C  ; FREE_PVAL   # ETHI SECT MARK..ETHI NUM TEN THOUS
   137D..137F  ; UNASSIGNED  # <reserved>..<reserved>
   1380..138F  ; PVALID      # ETHI SYL SEBATBEIT MWA..ETHI SYL PW
   1390..1399  ; DISALLOWED  # ETHI TON MARK YIZET..ETHI TON MARK
   139A..139F  ; UNASSIGNED  # <reserved>..<reserved>
   13A0..13F4  ; PVALID      # CHEROKEE LET A..CHEROKEE LET YV
   13F5..13FF  ; UNASSIGNED  # <reserved>..<reserved>
   1400        ; FREE_PVAL   # CANAD SYL HYPHEN
   1401..166C  ; PVALID      # CANAD SYL E..CANAD SYL CAR
   166D..166E  ; FREE_PVAL   # CANAD SYL CHI SIGN..CANAD SYLLAB
   166F..167F  ; PVALID      # CANAD SYL QAI..CANAD SYL B
   1680        ; FREE_PVAL   # OGHAM SPACE MARK
   1681..169A  ; PVALID      # OGHAM LET BEITH..OGHAM LET PEITH
   169B..169C  ; FREE_PVAL   # OGHAM FEATHER MARK..OGHAM REV FEAT
   169D..169F  ; UNASSIGNED  # <reserved>..<reserved>
   16A0..16EA  ; PVALID      # RUNIC LET FEHU FEOH FE F..RUNIC LET
   16EB..16F0  ; FREE_PVAL   # RUNIC SINGLE PUNCT..RUNIC BELGTHOR
   16F1..16FF  ; UNASSIGNED  # <reserved>..<reserved>
   1700..170C  ; PVALID      # TAGALOG LET A..TAGALOG LET YA
   170D        ; UNASSIGNED  # <reserved>
   170E..1714  ; PVALID      # TAGALOG LET LA..TAGALOG SIGN VIRAMA
   1715..171F  ; UNASSIGNED  # <reserved>..<reserved>
   1720..1734  ; PVALID      # HANUNOO LET A..HANUNOO SIGN PAMUDPO
   1735..1736  ; FREE_PVAL   # PHILIP SINGLE PUNCT..PHILIP DOUBLE
   1737..173F  ; UNASSIGNED  # <reserved>..<reserved>
   1740..1753  ; PVALID      # BUHID LET A..BUHID VOW SIGN U
   1754..175F  ; UNASSIGNED  # <reserved>..<reserved>
   1760..176C  ; PVALID      # TAGBANWA LET A..TAGBANWA LET YA
   176D        ; UNASSIGNED  # <reserved>
   176E..1770  ; PVALID      # TAGBANWA LET LA..TAGBANWA LET SA
   1771        ; UNASSIGNED  # <reserved>
   1772..1773  ; PVALID      # TAGBANWA VOW SIGN I..TAGBANWA VOW S
   1774..177F  ; UNASSIGNED  # <reserved>..<reserved>
   1780..17D3  ; PVALID      # KHMER LET KA..KHMER SIGN BATHAMASAT
   17D4..17D6  ; FREE_PVAL   # KHMER SIGN KHAN..KHMER SIGN CAMNUC
   17D7        ; PVALID      # KHMER SIGN LEK TOO
   17D8..17DB  ; FREE_PVAL   # KHMER SIGN BEYYAL..KHMER CURR SYM R
   17DC..17DD  ; PVALID      # KHMER SIGN AVAKRAHASANYA..KHMER SIG
   17DE..17DF  ; UNASSIGNED  # <reserved>..<reserved>
   17E0..17E9  ; PVALID      # KHMER DIG ZERO..KHMER DIG NINE
   17EA..17EF  ; UNASSIGNED  # <reserved>..<reserved>
   17F0..17F9  ; FREE_PVAL   # KHMER SYM LEK ATTAK SON..KHMER SYM
   17FA..17FF  ; UNASSIGNED  # <reserved>..<reserved>
   1800..180E  ; FREE_PVAL   # MONG BIRGA..MONG VOW SEP
   180F        ; UNASSIGNED  # <reserved>
   1810..1819  ; PVALID      # MONG DIG ZERO..MONG DIG NINE
   181A..181F  ; UNASSIGNED  # <reserved>..<reserved>
   1820..1877  ; PVALID      # MONG LET A..MONG LET MANCHU
   1878..187F  ; UNASSIGNED  # <reserved>..<reserved>
   1880..18AA  ; PVALID      # MONG LET ALI GALI ANUSVARA ONE..MON
   18AB..18AF  ; UNASSIGNED  # <reserved>..<reserved>
   18B0..18F5  ; PVALID      # CAN SYL OY..CAN SYL CA
   18F6..18FF  ; UNASSIGNED  # <reserved>..<reserved>
   1900..191C  ; PVALID      # LIMBU VOW-CARRIER LET..LIMBU LET HA
   191D..191F  ; UNASSIGNED  # <reserved>..<reserved>
   1920..192B  ; PVALID      # LIMBU VOW SIGN A..LIMBU SUBJOIN LET
   192C..192F  ; UNASSIGNED  # <reserved>..<reserved>
   1930..193B  ; PVALID      # LIMBU SM LET KA..LIMBU SIGN SA-I
   193C..193F  ; UNASSIGNED  # <reserved>..<reserved>
   1940        ; FREE_PVAL   # LIMBU SIGN LOO
   1941..1943  ; UNASSIGNED  # <reserved>..<reserved>
   1944..1945  ; FREE_PVAL   # LIMBU EXCLAM MARK..LIMBU QUEST MARK
   1946..196D  ; PVALID      # LIMBU DIG ZERO..TAI LE LET AI
   196E..196F  ; UNASSIGNED  # <reserved>..<reserved>
   1970..1974  ; PVALID      # TAI LE LET TONE-2..TAI LE LET TONE-
   1975..197F  ; UNASSIGNED  # <reserved>..<reserved>
   1980..19AB  ; PVALID      # NEW TAI LUE LET HIGH QA..NEW TAI LU
   19AC..19AF  ; UNASSIGNED  # <reserved>..<reserved>
   19B0..19C9  ; PVALID      # NEW TAI LUE VOW SIGN VOW SHORT..NEW
   19CA..19CF  ; UNASSIGNED  # <reserved>..<reserved>
   19D0..19DA  ; PVALID      # NEW TAI LUE DIG ZERO..NEW TAI LUE THAM
   19DB..19DD  ; UNASSIGNED  # <reserved>..<reserved>
   19DE..19FF  ; FREE_PVAL   # NEW TAI LUE SIGN LAE..KHMER SYM DAP
   1A00..1A1B  ; PVALID      # BUGIN LET KA..BUGIN VOW SIGN AE
   1A1C..1A1D  ; UNASSIGNED  # <reserved>..<reserved>
   1A1E..1A1F  ; FREE_PVAL   # BUGIN PALLAWA..BUGIN END OF SECTION
   1A20..1A5E  ; PVALID      # TAI THAM LET HIGH KA..TAI THAM CONS
   1A5F        ; UNASSIGNED  # <reserved>
   1A60..1A7C  ; PVALID      # TAI THAM SIGN SAKOT..TAI THAM SIGN
   1A7D..1A7E  ; UNASSIGNED  # <reserved>..<reserved>
   1A7F..1A89  ; PVALID      # TAI THAM COMB CRYPT DOT..TAI THAM D
   1A8A..1A8F  ; UNASSIGNED  # <reserved>..<reserved>
   1A90..1A99  ; PVALID      # TAI THAM THAM DIG ZERO..TAI THAM TH
   1A9A..1A9F  ; UNASSIGNED  # <reserved>..<reserved>
   1AA0..1AA6  ; FREE_PVAL   # TAI THAM SIGN WIANG..TAI THAM SIGN
   1AA7        ; PVALID      # TAI THAM SIGN MAI YAMOK
   1AA8..1AAD  ; FREE_PVAL   # TAI THAM SIGN KAAN..TAI THAM SIGN C
   1AAE..1AFF  ; UNASSIGNED  # <reserved>..<reserved>
   1B00..1B4B  ; PVALID      # BAL SIGN ULU RICEM..BAL LET ASYURA
   1B4C..1B4F  ; UNASSIGNED  # <reserved>..<reserved>
   1B50..1B59  ; PVALID      # BAL DIG ZERO..BAL DIG NINE
   1B5A..1B6A  ; FREE_PVAL   # BAL PANTI..BAL MUS SYM DANG
   1B6B..1B73  ; PVALID      # BAL MUS SYM COMB TEGEH..BAL MUS
   1B74..1B7C  ; FREE_PVAL   # BAL MUS SYM RIGHT-HAND OPEN DUG
   1B7D..1B7F  ; UNASSIGNED  # <reserved>..<reserved>
   1B80..1BBF  ; PVALID      # SUND SIGN PANYECEK..SUNDA LET FIN M
   1BC0..1BF3  ; PVALID      # BATAK LET A..BATAK PANONGONAN
   1BF4..1BFB  ; UNASSIGNED  # <reserved>..<reserved>
   1BFC..1BFF  ; FREE_PVAL   # BATAK SYM BINDU NA METEK..BATAK SYM
   1C00..1C37  ; PVALID      # LEPCHA LET KA..LEPCHA SIGN NUKTA
   1C38..1C3A  ; UNASSIGNED  # <reserved>..<reserved>
   1C3B..1C3F  ; FREE_PVAL   # LEPCHA PUNCT TA-ROL..LEPCHA PUNCT T
   1C40..1C49  ; PVALID      # LEPCHA DIG ZERO..LEPCHA DIG NINE
   1C4A..1C4C  ; UNASSIGNED  # <reserved>..<reserved>
   1C4D..1C7D  ; PVALID      # LEPCHA LET TTA..OL CHIKI AHAD
   1C7E..1C7F  ; FREE_PVAL   # OL CHIKI PUNCT MUCAAD..OL CHIKI PUN
   1C80..1C9F  ; UNASSIGNED  # <reserved>..<reserved>
   1CC0..1CC7  ; FREE_PVAL   # SUNDA PUNCT BINDU SURYA..SUNDA PUNC
   1CC8..1CCF  ; UNASSIGNED  # <reserved>..<reserved>
   1CD0..1CD2  ; PVALID      # VED TONE KARSHANA..VED TONE PRENKHA
   1CD3        ; FREE_PVAL   # VED SIGN NIHSHVASA
   1CD4..1CF6  ; PVALID      # VED SIGN YAJURVEDIC MID SVARITA..VE
   1CF7..1CFF  ; UNASSIGNED  # <reserved>..<reserved>
   1D00..1D2B  ; PVALID      # LAT LET SM CAP A..CYR LET SM
   1D2C..1D2E  ; FREE_PVAL   # MOD LET CAP A..MOD LET C
   1D2F        ; PVALID      # MOD LET CAP BARRED B
   1D30..1D3A  ; FREE_PVAL   # MOD LET CAP D..MOD LET C
   1D3B        ; PVALID      # MOD LET CAP REV N
   1D3C..1D4D  ; FREE_PVAL   # MOD LET CAP O..MOD LET S
   1D4E        ; PVALID      # MOD LET SM TURNED I
   1D4F..1D6A  ; FREE_PVAL   # MOD LET SM K..GREEK SUB SMA
   1D6B..1D77  ; PVALID      # LAT SM LET UE..LAT SM LET TU
   1D78        ; FREE_PVAL   # MOD LET CYR EN
   1D79..1D9A  ; PVALID      # LAT SM LET INSULAR G..LAT SM LE
   1D9B..1DBF  ; FREE_PVAL   # MOD LET SM TURNED ALPHA..MOD
   1DC0..1DE6  ; PVALID      # COMB DOTTED GRAVE ACCENT..COMB LAT
   1DE7..1DFB  ; UNASSIGNED  # <reserved>..<reserved>
   1DFC..1DFF  ; PVALID      # COMB DOUBLE INV BREVE BEL..COMB R
   1E00        ; FREE_PVAL   # LAT CAP LET A W RING BEL
   1E01        ; PVALID      # LAT SM LET A W RING BEL
   1E02        ; FREE_PVAL   # LAT CAP LET B W DOT ABOVE
   1E03        ; PVALID      # LAT SM LET B W DOT ABOVE
   1E04        ; FREE_PVAL   # LAT CAP LET B W DOT BEL
   1E05        ; PVALID      # LAT SM LET B W DOT BEL
   1E06        ; FREE_PVAL   # LAT CAP LET B W LINE BEL
   1E07        ; PVALID      # LAT SM LET B W LINE BEL
   1E08        ; FREE_PVAL   # LAT CAP LET C W CEDILLA AND ACUT
   1E09        ; PVALID      # LAT SM LET C W CEDILLA AND ACUTE
   1E0A        ; FREE_PVAL   # LAT CAP LET D W DOT ABOVE
   1E0B        ; PVALID      # LAT SM LET D W DOT ABOVE
   1E0C        ; FREE_PVAL   # LAT CAP LET D W DOT BEL
   1E0D        ; PVALID      # LAT SM LET D W DOT BEL
   1E0E        ; FREE_PVAL   # LAT CAP LET D W LINE BEL
   1E0F        ; PVALID      # LAT SM LET D W LINE BEL
   1E10        ; FREE_PVAL   # LAT CAP LET D W CEDILLA
   1E11        ; PVALID      # LAT SM LET D W CEDILLA
   1E12        ; FREE_PVAL   # LAT CAP LET D W CIRCUMFLEX BEL
   1E13        ; PVALID      # LAT SM LET D W CIRCUMFLEX BEL
   1E14        ; FREE_PVAL   # LAT CAP LET E W MACRON AND GRAVE
   1E15        ; PVALID      # LAT SM LET E W MACRON AND GRAVE
   1E16        ; FREE_PVAL   # LAT CAP LET E W MACRON AND ACUTE
   1E17        ; PVALID      # LAT SM LET E W MACRON AND ACUTE
   1E18        ; FREE_PVAL   # LAT CAP LET E W CIRCUMFLEX BEL
   1E19        ; PVALID      # LAT SM LET E W CIRCUMFLEX BEL
   1E1A        ; FREE_PVAL   # LAT CAP LET E W TILDE BEL
   1E1B        ; PVALID      # LAT SM LET E W TILDE BEL
   1E1C        ; FREE_PVAL   # LAT CAP LET E W CEDILLA AND BREV
   1E1D        ; PVALID      # LAT SM LET E W CEDILLA AND BREVE
   1E1E        ; FREE_PVAL   # LAT CAP LET F W DOT ABOVE
   1E1F        ; PVALID      # LAT SM LET F W DOT ABOVE
   1E20        ; FREE_PVAL   # LAT CAP LET G W MACRON
   1E21        ; PVALID      # LAT SM LET G W MACRON
   1E22        ; FREE_PVAL   # LAT CAP LET H W DOT ABOVE
   1E23        ; PVALID      # LAT SM LET H W DOT ABOVE
   1E24        ; FREE_PVAL   # LAT CAP LET H W DOT BEL
   1E25        ; PVALID      # LAT SM LET H W DOT BEL
   1E26        ; FREE_PVAL   # LAT CAP LET H W DIAERESIS
   1E27        ; PVALID      # LAT SM LET H W DIAERESIS
   1E28        ; FREE_PVAL   # LAT CAP LET H W CEDILLA
   1E29        ; PVALID      # LAT SM LET H W CEDILLA
   1E2A        ; FREE_PVAL   # LAT CAP LET H W BREVE BEL
   1E2B        ; PVALID      # LAT SM LET H W BREVE BEL
   1E2C        ; FREE_PVAL   # LAT CAP LET I W TILDE BEL
   1E2D        ; PVALID      # LAT SM LET I W TILDE BEL
   1E2E        ; FREE_PVAL   # LAT CAP LET I W DIAERESIS AND AC
   1E2F        ; PVALID      # LAT SM LET I W DIAERESIS AND ACUT
   1E30        ; FREE_PVAL   # LAT CAP LET K W ACUTE
   1E31        ; PVALID      # LAT SM LET K W ACUTE
   1E32        ; FREE_PVAL   # LAT CAP LET K W DOT BEL
   1E33        ; PVALID      # LAT SM LET K W DOT BEL
   1E34        ; FREE_PVAL   # LAT CAP LET K W LINE BEL
   1E35        ; PVALID      # LAT SM LET K W LINE BEL
   1E36        ; FREE_PVAL   # LAT CAP LET L W DOT BEL
   1E37        ; PVALID      # LAT SM LET L W DOT BEL
   1E38        ; FREE_PVAL   # LAT CAP LET L W DOT BEL AND MA
   1E39        ; PVALID      # LAT SM LET L W DOT BEL AND MACR
   1E3A        ; FREE_PVAL   # LAT CAP LET L W LINE BEL
   1E3B        ; PVALID      # LAT SM LET L W LINE BEL
   1E3C        ; FREE_PVAL   # LAT CAP LET L W CIRCUMFLEX BEL
   1E3D        ; PVALID      # LAT SM LET L W CIRCUMFLEX BEL
   1E3E        ; FREE_PVAL   # LAT CAP LET M W ACUTE
   1E3F        ; PVALID      # LAT SM LET M W ACUTE
   1E40        ; FREE_PVAL   # LAT CAP LET M W DOT ABOVE
   1E41        ; PVALID      # LAT SM LET M W DOT ABOVE
   1E42        ; FREE_PVAL   # LAT CAP LET M W DOT BEL
   1E43        ; PVALID      # LAT SM LET M W DOT BEL
   1E44        ; FREE_PVAL   # LAT CAP LET N W DOT ABOVE
   1E45        ; PVALID      # LAT SM LET N W DOT ABOVE
   1E46        ; FREE_PVAL   # LAT CAP LET N W DOT BEL
   1E47        ; PVALID      # LAT SM LET N W DOT BEL
   1E48        ; FREE_PVAL   # LAT CAP LET N W LINE BEL
   1E49        ; PVALID      # LAT SM LET N W LINE BEL
   1E4A        ; FREE_PVAL   # LAT CAP LET N W CIRCUMFLEX BEL
   1E4B        ; PVALID      # LAT SM LET N W CIRCUMFLEX BEL
   1E4C        ; FREE_PVAL   # LAT CAP LET O W TILDE AND ACUTE
   1E4D        ; PVALID      # LAT SM LET O W TILDE AND ACUTE
   1E4E        ; FREE_PVAL   # LAT CAP LET O W TILDE AND DIAERE
   1E4F        ; PVALID      # LAT SM LET O W TILDE AND DIAERESI
   1E50        ; FREE_PVAL   # LAT CAP LET O W MACRON AND GRAVE
   1E51        ; PVALID      # LAT SM LET O W MACRON AND GRAVE
   1E52        ; FREE_PVAL   # LAT CAP LET O W MACRON AND ACUTE
   1E53        ; PVALID      # LAT SM LET O W MACRON AND ACUTE
   1E54        ; FREE_PVAL   # LAT CAP LET P W ACUTE
   1E55        ; PVALID      # LAT SM LET P W ACUTE
   1E56        ; FREE_PVAL   # LAT CAP LET P W DOT ABOVE
   1E57        ; PVALID      # LAT SM LET P W DOT ABOVE
   1E58        ; FREE_PVAL   # LAT CAP LET R W DOT ABOVE
   1E59        ; PVALID      # LAT SM LET R W DOT ABOVE
   1E5A        ; FREE_PVAL   # LAT CAP LET R W DOT BEL
   1E5B        ; PVALID      # LAT SM LET R W DOT BEL
   1E5C        ; FREE_PVAL   # LAT CAP LET R W DOT BEL AND MA
   1E5D        ; PVALID      # LAT SM LET R W DOT BEL AND MACR
   1E5E        ; FREE_PVAL   # LAT CAP LET R W LINE BEL
   1E5F        ; PVALID      # LAT SM LET R W LINE BEL
   1E60        ; FREE_PVAL   # LAT CAP LET S W DOT ABOVE
   1E61        ; PVALID      # LAT SM LET S W DOT ABOVE
   1E62        ; FREE_PVAL   # LAT CAP LET S W DOT BEL
   1E63        ; PVALID      # LAT SM LET S W DOT BEL
   1E64        ; FREE_PVAL   # LAT CAP LET S W ACUTE AND DOT AB
   1E65        ; PVALID      # LAT SM LET S W ACUTE AND DOT ABOV
   1E66        ; FREE_PVAL   # LAT CAP LET S W CARON AND DOT AB
   1E67        ; PVALID      # LAT SM LET S W CARON AND DOT ABOV
   1E68        ; FREE_PVAL   # LAT CAP LET S W DOT BEL AND DO
   1E69        ; PVALID      # LAT SM LET S W DOT BEL AND DOT
   1E6A        ; FREE_PVAL   # LAT CAP LET T W DOT ABOVE
   1E6B        ; PVALID      # LAT SM LET T W DOT ABOVE
   1E6C        ; FREE_PVAL   # LAT CAP LET T W DOT BEL
   1E6D        ; PVALID      # LAT SM LET T W DOT BEL
   1E6E        ; FREE_PVAL   # LAT CAP LET T W LINE BEL
   1E6F        ; PVALID      # LAT SM LET T W LINE BEL
   1E70        ; FREE_PVAL   # LAT CAP LET T W CIRCUMFLEX BEL
   1E71        ; PVALID      # LAT SM LET T W CIRCUMFLEX BEL
   1E72        ; FREE_PVAL   # LAT CAP LET U W DIAERESIS BEL
   1E73        ; PVALID      # LAT SM LET U W DIAERESIS BEL
   1E74        ; FREE_PVAL   # LAT CAP LET U W TILDE BEL
   1E75        ; PVALID      # LAT SM LET U W TILDE BEL
   1E76        ; FREE_PVAL   # LAT CAP LET U W CIRCUMFLEX BEL
   1E77        ; PVALID      # LAT SM LET U W CIRCUMFLEX BEL
   1E78        ; FREE_PVAL   # LAT CAP LET U W TILDE AND ACUTE
   1E79        ; PVALID      # LAT SM LET U W TILDE AND ACUTE
   1E7A        ; FREE_PVAL   # LAT CAP LET U W MACRON AND DIAER
   1E7B        ; PVALID      # LAT SM LET U W MACRON AND DIAERES
   1E7C        ; FREE_PVAL   # LAT CAP LET V W TILDE
   1E7D        ; PVALID      # LAT SM LET V W TILDE
   1E7E        ; FREE_PVAL   # LAT CAP LET V W DOT BEL
   1E7F        ; PVALID      # LAT SM LET V W DOT BEL
   1E80        ; FREE_PVAL   # LAT CAP LET W W GRAVE
   1E81        ; PVALID      # LAT SM LET W W GRAVE
   1E82        ; FREE_PVAL   # LAT CAP LET W W ACUTE
   1E83        ; PVALID      # LAT SM LET W W ACUTE
   1E84        ; FREE_PVAL   # LAT CAP LET W W DIAERESIS
   1E85        ; PVALID      # LAT SM LET W W DIAERESIS
   1E86        ; FREE_PVAL   # LAT CAP LET W W DOT ABOVE
   1E87        ; PVALID      # LAT SM LET W W DOT ABOVE
   1E88        ; FREE_PVAL   # LAT CAP LET W W DOT BEL
   1E89        ; PVALID      # LAT SM LET W W DOT BEL
   1E8A        ; FREE_PVAL   # LAT CAP LET X W DOT ABOVE
   1E8B        ; PVALID      # LAT SM LET X W DOT ABOVE
   1E8C        ; FREE_PVAL   # LAT CAP LET X W DIAERESIS
   1E8D        ; PVALID      # LAT SM LET X W DIAERESIS
   1E8E        ; FREE_PVAL   # LAT CAP LET Y W DOT ABOVE
   1E8F        ; PVALID      # LAT SM LET Y W DOT ABOVE
   1E90        ; FREE_PVAL   # LAT CAP LET Z W CIRCUMFLEX
   1E91        ; PVALID      # LAT SM LET Z W CIRCUMFLEX
   1E92        ; FREE_PVAL   # LAT CAP LET Z W DOT BEL
   1E93        ; PVALID      # LAT SM LET Z W DOT BEL
   1E94        ; FREE_PVAL   # LAT CAP LET Z W LINE BEL
   1E95..1E99  ; PVALID      # LAT SM LET Z W LINE BEL..LAT
   1E9A..1E9B  ; FREE_PVAL   # LAT SM LET A W RIGHT HALF RING..L
   1E9C..1E9D  ; PVALID      # LAT SM LET LONG S W DIAGONAL STRO
   1E9E        ; FREE_PVAL   # LAT CAP LET SHARP S
   1E9F        ; PVALID      # LAT SM LET DELTA
   1EA0        ; FREE_PVAL   # LAT CAP LET A W DOT BEL
   1EA1        ; PVALID      # LAT SM LET A W DOT BEL
   1EA2        ; FREE_PVAL   # LAT CAP LET A W HOOK ABOVE
   1EA3        ; PVALID      # LAT SM LET A W HOOK ABOVE
   1EA4        ; FREE_PVAL   # LAT CAP LET A W CIRCUMFLEX AND A
   1EA5        ; PVALID      # LAT SM LET A W CIRCUMFLEX AND ACU
   1EA6        ; FREE_PVAL   # LAT CAP LET A W CIRCUMFLEX AND G
   1EA7        ; PVALID      # LAT SM LET A W CIRCUMFLEX AND GRA
   1EA8        ; FREE_PVAL   # LAT CAP LET A W CIRCUMFLEX AND H
   1EA9        ; PVALID      # LAT SM LET A W CIRCUMFLEX AND HOO
   1EAA        ; FREE_PVAL   # LAT CAP LET A W CIRCUMFLEX AND T
   1EAB        ; PVALID      # LAT SM LET A W CIRCUMFLEX AND TIL
   1EAC        ; FREE_PVAL   # LAT CAP LET A W CIRCUMFLEX AND D
   1EAD        ; PVALID      # LAT SM LET A W CIRCUMFLEX AND DOT
   1EAE        ; FREE_PVAL   # LAT CAP LET A W BREVE AND ACUTE
   1EAF        ; PVALID      # LAT SM LET A W BREVE AND ACUTE
   1EB0        ; FREE_PVAL   # LAT CAP LET A W BREVE AND GRAVE
   1EB1        ; PVALID      # LAT SM LET A W BREVE AND GRAVE
   1EB2        ; FREE_PVAL   # LAT CAP LET A W BREVE AND HOOK A
   1EB3        ; PVALID      # LAT SM LET A W BREVE AND HOOK ABO
   1EB4        ; FREE_PVAL   # LAT CAP LET A W BREVE AND TILDE
   1EB5        ; PVALID      # LAT SM LET A W BREVE AND TILDE
   1EB6        ; FREE_PVAL   # LAT CAP LET A W BREVE AND DOT BE
   1EB7        ; PVALID      # LAT SM LET A W BREVE AND DOT BELO
   1EB8        ; FREE_PVAL   # LAT CAP LET E W DOT BEL
   1EB9        ; PVALID      # LAT SM LET E W DOT BEL
   1EBA        ; FREE_PVAL   # LAT CAP LET E W HOOK ABOVE
   1EBB        ; PVALID      # LAT SM LET E W HOOK ABOVE
   1EBC        ; FREE_PVAL   # LAT CAP LET E W TILDE
   1EBD        ; PVALID      # LAT SM LET E W TILDE
   1EBE        ; FREE_PVAL   # LAT CAP LET E W CIRCUMFLEX AND A
   1EBF        ; PVALID      # LAT SM LET E W CIRCUMFLEX AND ACU
   1EC0        ; FREE_PVAL   # LAT CAP LET E W CIRCUMFLEX AND G
   1EC1        ; PVALID      # LAT SM LET E W CIRCUMFLEX AND GRA
   1EC2        ; FREE_PVAL   # LAT CAP LET E W CIRCUMFLEX AND H
   1EC3        ; PVALID      # LAT SM LET E W CIRCUMFLEX AND HOO
   1EC4        ; FREE_PVAL   # LAT CAP LET E W CIRCUMFLEX AND T
   1EC5        ; PVALID      # LAT SM LET E W CIRCUMFLEX AND TIL
   1EC6        ; FREE_PVAL   # LAT CAP LET E W CIRCUMFLEX AND D
   1EC7        ; PVALID      # LAT SM LET E W CIRCUMFLEX AND DOT
   1EC8        ; FREE_PVAL   # LAT CAP LET I W HOOK ABOVE
   1EC9        ; PVALID      # LAT SM LET I W HOOK ABOVE
   1ECA        ; FREE_PVAL   # LAT CAP LET I W DOT BEL
   1ECB        ; PVALID      # LAT SM LET I W DOT BEL
   1ECC        ; FREE_PVAL   # LAT CAP LET O W DOT BEL
   1ECD        ; PVALID      # LAT SM LET O W DOT BEL
   1ECE        ; FREE_PVAL   # LAT CAP LET O W HOOK ABOVE
   1ECF        ; PVALID      # LAT SM LET O W HOOK ABOVE
   1ED0        ; FREE_PVAL   # LAT CAP LET O W CIRCUMFLEX AND A
   1ED1        ; PVALID      # LAT SM LET O W CIRCUMFLEX AND ACU
   1ED2        ; FREE_PVAL   # LAT CAP LET O W CIRCUMFLEX AND G
   1ED3        ; PVALID      # LAT SM LET O W CIRCUMFLEX AND GRA
   1ED4        ; FREE_PVAL   # LAT CAP LET O W CIRCUMFLEX AND H
   1ED5        ; PVALID      # LAT SM LET O W CIRCUMFLEX AND HOO
   1ED6        ; FREE_PVAL   # LAT CAP LET O W CIRCUMFLEX AND T
   1ED7        ; PVALID      # LAT SM LET O W CIRCUMFLEX AND TIL
   1ED8        ; FREE_PVAL   # LAT CAP LET O W CIRCUMFLEX AND D
   1ED9        ; PVALID      # LAT SM LET O W CIRCUMFLEX AND DOT
   1EDA        ; FREE_PVAL   # LAT CAP LET O W HORN AND ACUTE
   1EDB        ; PVALID      # LAT SM LET O W HORN AND ACUTE
   1EDC        ; FREE_PVAL   # LAT CAP LET O W HORN AND GRAVE
   1EDD        ; PVALID      # LAT SM LET O W HORN AND GRAVE
   1EDE        ; FREE_PVAL   # LAT CAP LET O W HORN AND HOOK AB
   1EDF        ; PVALID      # LAT SM LET O W HORN AND HOOK ABOV
   1EE0        ; FREE_PVAL   # LAT CAP LET O W HORN AND TILDE
   1EE1        ; PVALID      # LAT SM LET O W HORN AND TILDE
   1EE2        ; FREE_PVAL   # LAT CAP LET O W HORN AND DOT BEL
   1EE3        ; PVALID      # LAT SM LET O W HORN AND DOT BEL
   1EE4        ; FREE_PVAL   # LAT CAP LET U W DOT BEL
   1EE5        ; PVALID      # LAT SM LET U W DOT BEL
   1EE6        ; FREE_PVAL   # LAT CAP LET U W HOOK ABOVE
   1EE7        ; PVALID      # LAT SM LET U W HOOK ABOVE
   1EE8        ; FREE_PVAL   # LAT CAP LET U W HORN AND ACUTE
   1EE9        ; PVALID      # LAT SM LET U W HORN AND ACUTE
   1EEA        ; FREE_PVAL   # LAT CAP LET U W HORN AND GRAVE
   1EEB        ; PVALID      # LAT SM LET U W HORN AND GRAVE
   1EEC        ; FREE_PVAL   # LAT CAP LET U W HORN AND HOOK AB
   1EED        ; PVALID      # LAT SM LET U W HORN AND HOOK ABOV
   1EEE        ; FREE_PVAL   # LAT CAP LET U W HORN AND TILDE
   1EEF        ; PVALID      # LAT SM LET U W HORN AND TILDE
   1EF0        ; FREE_PVAL   # LAT CAP LET U W HORN AND DOT BEL
   1EF1        ; PVALID      # LAT SM LET U W HORN AND DOT BEL
   1EF2        ; FREE_PVAL   # LAT CAP LET Y W GRAVE
   1EF3        ; PVALID      # LAT SM LET Y W GRAVE
   1EF4        ; FREE_PVAL   # LAT CAP LET Y W DOT BEL
   1EF5        ; PVALID      # LAT SM LET Y W DOT BEL
   1EF6        ; FREE_PVAL   # LAT CAP LET Y W HOOK ABOVE
   1EF7        ; PVALID      # LAT SM LET Y W HOOK ABOVE
   1EF8        ; FREE_PVAL   # LAT CAP LET Y W TILDE
   1EF9        ; PVALID      # LAT SM LET Y W TILDE
   1EFA        ; FREE_PVAL   # LAT CAP LET MIDDLE-WELSH LL
   1EFB        ; PVALID      # LAT SM LET MIDDLE-WELSH LL
   1EFC        ; FREE_PVAL   # LAT CAP LET MIDDLE-WELSH V
   1EFD        ; PVALID      # LAT SM LET MIDDLE-WELSH V
   1EFE        ; FREE_PVAL   # LAT CAP LET Y W LOOP
   1EFF..1F07  ; PVALID      # LAT SM LET Y W LOOP..GREEK SM LET
   1F08..1F0F  ; FREE_PVAL   # GREEK CAP LET ALPHA W PSILI..GREEK
   1F10..1F15  ; PVALID      # GREEK SM LET EPSILON W PSILI..GREEK
   1F16..1F17  ; UNASSIGNED  # <reserved>..<reserved>
   1F18..1F1D  ; FREE_PVAL   # GREEK CAP LET EPSILON W PSILI..GRE
   1F1E..1F1F  ; UNASSIGNED  # <reserved>..<reserved>
   1F20..1F27  ; PVALID      # GREEK SM LET ETA W PSILI..GREEK SMA
   1F28..1F2F  ; FREE_PVAL   # GREEK CAP LET ETA W PSILI..GREEK C
   1F30..1F37  ; PVALID      # GREEK SM LET IOTA W PSILI..GREEK SM
   1F38..1F3F  ; FREE_PVAL   # GREEK CAP LET IOTA W PSILI..GREEK
   1F40..1F45  ; PVALID      # GREEK SM LET OMICRON W PSILI..GREEK
   1F46..1F47  ; UNASSIGNED  # <reserved>..<reserved>
   1F48..1F4D  ; FREE_PVAL   # GREEK CAP LET OMICRON W PSILI..GRE
   1F4E..1F4F  ; UNASSIGNED  # <reserved>..<reserved>
   1F50..1F57  ; PVALID      # GREEK SM LET UPSILON W PSILI..GREEK
   1F58        ; UNASSIGNED  # <reserved>
   1F59        ; FREE_PVAL   # GREEK CAP LET UPSILON W DASIA
   1F5A        ; UNASSIGNED  # <reserved>
   1F5B        ; FREE_PVAL   # GREEK CAP LET UPSILON W DASIA AND
   1F5C        ; UNASSIGNED  # <reserved>
   1F5D        ; FREE_PVAL   # GREEK CAP LET UPSILON W DASIA AND
   1F5E        ; UNASSIGNED  # <reserved>
   1F5F        ; FREE_PVAL   # GREEK CAP LET UPSILON W DASIA AND
   1F60..1F67  ; PVALID      # GREEK SM LET OMEGA W PSILI..GREEK S
   1F68..1F6F  ; FREE_PVAL   # GREEK CAP LET OMEGA W PSILI..GREEK
   1F70        ; PVALID      # GREEK SM LET ALPHA W VARIA
   1F71        ; FREE_PVAL   # GREEK SM LET ALPHA W OXIA
   1F72        ; PVALID      # GREEK SM LET EPSILON W VARIA
   1F73        ; FREE_PVAL   # GREEK SM LET EPSILON W OXIA
   1F74        ; PVALID      # GREEK SM LET ETA W VARIA
   1F75        ; FREE_PVAL   # GREEK SM LET ETA W OXIA
   1F76        ; PVALID      # GREEK SM LET IOTA W VARIA
   1F77        ; FREE_PVAL   # GREEK SM LET IOTA W OXIA
   1F78        ; PVALID      # GREEK SM LET OMICRON W VARIA
   1F79        ; FREE_PVAL   # GREEK SM LET OMICRON W OXIA
   1F7A        ; PVALID      # GREEK SM LET UPSILON W VARIA
   1F7B        ; FREE_PVAL   # GREEK SM LET UPSILON W OXIA
   1F7C        ; PVALID      # GREEK SM LET OMEGA W VARIA
   1F7D        ; FREE_PVAL   # GREEK SM LET OMEGA W OXIA
   1F7E..1F7F  ; UNASSIGNED  # <reserved>..<reserved>
   1F80..1FAF  ; FREE_PVAL   # GREEK SM LET ALPHA W PSILI AND YPOG
   1FB0..1FB1  ; PVALID      # GREEK SM LET ALPHA W VRACHY..GREEK
   1FB2..1FB4  ; FREE_PVAL   # GREEK SM LET ALPHA W VARIA AND YPOG
   1FB5        ; UNASSIGNED  # <reserved>
   1FB6        ; PVALID      # GREEK SM LET ALPHA W PERISPOMENI
   1FB7..1FC4  ; FREE_PVAL   # GREEK SM LET ALPHA W PERISPOMENI AN
   1FC5        ; UNASSIGNED  # <reserved>
   1FC6        ; PVALID      # GREEK SM LET ETA W PERISPOMENI
   1FC7..1FCF  ; FREE_PVAL   # GREEK SM LET ETA W PERISPOMENI AND
   1FD0..1FD2  ; PVALID      # GREEK SM LET IOTA W VRACHY..GREEK S
   1FD3        ; FREE_PVAL   # GREEK SM LET IOTA W DIALYTIKA AND O
   1FD4..1FD5  ; UNASSIGNED  # <reserved>..<reserved>
   1FD6..1FD7  ; PVALID      # GREEK SM LET IOTA W PERISPOMENI..GR
   1FD8..1FDB  ; FREE_PVAL   # GREEK CAP LET IOTA W VRACHY..GREEK
   1FDC        ; UNASSIGNED  # <reserved>
   1FDD..1FDF  ; FREE_PVAL   # GREEK DASIA AND VARIA..GREEK DASIA
   1FE0..1FE2  ; PVALID      # GREEK SM LET UPSILON W VRACHY..GREE
   1FE3        ; FREE_PVAL   # GREEK SM LET UPSILON W DIALYTIKA AN
   1FE4..1FE7  ; PVALID      # GREEK SM LET RHO W PSILI..GREEK SMA
   1FE8..1FEF  ; FREE_PVAL   # GREEK CAP LET UPSILON W VRACHY..GR
   1FF0..1FF1  ; UNASSIGNED  # <reserved>..<reserved>
   1FF2..1FF4  ; FREE_PVAL   # GREEK SM LET OMEGA W VARIA AND YPOG
   1FF5        ; UNASSIGNED  # <reserved>
   1FF6        ; PVALID      # GREEK SM LET OMEGA W PERISPOMENI
   1FF7..1FFE  ; FREE_PVAL   # GREEK SM LET OMEGA W PERISPOMENI AN
   1FFF        ; UNASSIGNED  # <reserved>
   2000..200A  ; FREE_PVAL   # EN QUAD..HAIR SPACE
   200B        ; DISALLOWED  # ZERO WIDTH SPACE
   200C..200D  ; CONTEXTJ    # ZERO WIDTH NON-JOINER..ZERO WIDTH J
   200E..200F  ; DISALLOWED  # LEFT-TO-RIGHT MARK..RIGHT-TO-LEFT M
   2010..2027  ; FREE_PVAL   # HYPHEN..HYPHENATION POINT
   2028..202E  ; DISALLOWED  # LINE SEP..RIGHT-TO-LEFT OVERRIDE
   202F..205F  ; FREE_PVAL   # NARROW NO-BREAK SPACE..MED MATH SP
   2060..2064  ; DISALLOWED  # WORD JOINER..INVISIBLE PLUS
   2065..2069  ; UNASSIGNED  # <reserved>..<reserved>
   206A..206F  ; DISALLOWED  # INHIBIT SYMM SWAP..NOM DIGIT SHAPES
   2070..2071  ; FREE_PVAL   # SUPER ZERO..SUPER LAT SM LET I
   2072..2073  ; UNASSIGNED  # <reserved>..<reserved>
   2074..208E  ; FREE_PVAL   # SUPER FOUR..SUB RIGHT PARENTHESIS
   208F        ; UNASSIGNED  # <reserved>
   2090..209C  ; FREE_PVAL   # LAT SUB SM LET A..LAT SUB SM LET T
   2095..209F  ; UNASSIGNED  # <reserved>..<reserved>
   20A0..20B9  ; FREE_PVAL   # EURO-CURRENCY SIGN..INDIAN RUPEE SI
   20BA..20CF  ; UNASSIGNED  # <reserved>..<reserved>
   20D0..20F0  ; FREE_PVAL   # COMB LEFT HARPOON ABOVE..COMB ASTE
   20F1..20FF  ; UNASSIGNED  # <reserved>..<reserved>
   2100..214D  ; FREE_PVAL   # ACCOUNT OF..AKTIESELSKAB
   214E        ; PVALID      # TURNED SM F
   214F..2183  ; DISALLOWED  # SYM FOR SAMAR SOURCE..ROM NUM REVER
   2184        ; PVALID      # LAT SM LET REV C
   2185..2189  ; FREE_PVAL   # ROM NUM SIX LATE FORM..VULGAR FRACT
   218A..218F  ; UNASSIGNED  # <reserved>..<reserved>
   2190..23F3  ; FREE_PVAL   # LEFTWARDS ARROW..HOURGLASS WITH FLO
   23F4..23FF  ; UNASSIGNED  # <reserved>..<reserved>
   2400..2426  ; FREE_PVAL   # SYM FOR NULL..SYM FOR SUB FORM
   2427..243F  ; UNASSIGNED  # <reserved>..<reserved>
   2440..244A  ; FREE_PVAL   # OCR HOOK..OCR DOUBLE BACKSLASH
   244B..245F  ; UNASSIGNED  # <reserved>..<reserved>
   2460..26FF  ; FREE_PVAL   # CIRCLED DIG ONE..WHITE FLAG W HORIZ
   2700        ; UNASSIGNED  # <reserved>
   2701..2B4C  ; FREE_PVAL   # UP BLADE SCISSORS..RIGHTWARDS ARROW
   2B4D..2B4F  ; UNASSIGNED  # <reserved>..<reserved>
   2B50..2B59  ; FREE_PVAL   # WHITE MEDIUM STAR..HEAVY CIRCLED SA
   2B5A..2BFF  ; UNASSIGNED  # <reserved>..<reserved>
   2C00..2C2E  ; PVALID      # GLAG CAP LET AZU..GLAG CA
   2C2F        ; UNASSIGNED  # <reserved>
   2C30..2C5E  ; PVALID      # GLAG SM LET AZU..GLAG SMAL
   2C5F        ; UNASSIGNED  # <reserved>
   2C60..2CF3  ; PVALID      # LAT CAP LET L W DOUBLE BAR..COPT SM
   2CF4..2CF8  ; UNASSIGNED  # <reserved>..<reserved>
   2CF9..2CFF  ; FREE_PVAL   # COPT OLD NUB FULL STOP..COPT MORPHO
   2D00..2D25  ; PVALID      # GEORG SM LET AN..GEORG SM LET
   2D26        ; UNASSIGNED  # <reserved>
   2D27        ; PVALID      # GEORG SM LET YN
   2D28..2D2C  ; UNASSIGNED  # <reserved>..<reserved>
   2D2D        ; PVALID      # GEORG SM LET AEN
   2D2E..2D2F  ; UNASSIGNED  # <reserved>..<reserved>
   2D30..2D67  ; PVALID      # TIFINAGH LET YA..TIFINAGH LETTER YO
   2D68..2D6E  ; UNASSIGNED  # <reserved>..<reserved>
   2D6F        ; PVALID      # TIFINAGH MOD LET LABIALIZATION MARK
   2D70..2D7F  ; UNASSIGNED  # <reserved>..<reserved>
   2D80..2D96  ; PVALID      # ETHI SYL LOA..ETHI SYL GGW
   2D97..2D9F  ; UNASSIGNED  # <reserved>..<reserved>
   2DA0..2DA6  ; PVALID      # ETHI SYL SSA..ETHI SYL SSO
   2DA7        ; UNASSIGNED  # <reserved>
   2DA8..2DAE  ; PVALID      # ETHI SYL CCA..ETHI SYL CCO
   2DAF        ; UNASSIGNED  # <reserved>
   2DB0..2DB6  ; PVALID      # ETHI SYL ZZA..ETHI SYL ZZO
   2DB7        ; UNASSIGNED  # <reserved>
   2DB8..2DBE  ; PVALID      # ETHI SYL CCHA..ETHI SYL CC
   2DBF        ; UNASSIGNED  # <reserved>
   2DC0..2DC6  ; PVALID      # ETHI SYL QYA..ETHI SYL QYO
   2DC7        ; UNASSIGNED  # <reserved>
   2DC8..2DCE  ; PVALID      # ETHI SYL KYA..ETHI SYL KYO
   2DCF        ; UNASSIGNED  # <reserved>
   2DD0..2DD6  ; PVALID      # ETHI SYL XYA..ETHI SYL XYO
   2DD7        ; UNASSIGNED  # <reserved>
   2DD8..2DDE  ; PVALID      # ETHI SYL GYA..ETHI SYL GYO
   2DDF        ; UNASSIGNED  # <reserved>
   2DE0..2DFF  ; PVALID      # COMB CYR LET BE..COMB CYRI
   2E00..2E2E  ; FREE_PVAL   # RIGHT ANGLE SUB MARK..REV QUEST MAR
   2E2F        ; PVALID      # VERT TILDE
   2E30..2E3B  ; FREE_PVAL   # RING PNT..THREE-EM DASH
   2E3C..2E7F  ; UNASSIGNED  # <reserved>..<reserved>
   2E80..2E99  ; FREE_PVAL   # CJK RAD REPEAT..CJK RAD RAP
   2E9A        ; UNASSIGNED  # <reserved>
   2E9B..2EF3  ; FREE_PVAL   # CJK RAD CHOKE..CJK RAD C-SIMPLIFIED
   2EF4..2EFF  ; UNASSIGNED  # <reserved>..<reserved>
   2F00..2FD5  ; FREE_PVAL   # KANGXI RAD ONE..KANGXI RAD FLUTE
   2FD6..2FEF  ; UNASSIGNED  # <reserved>..<reserved>
   2FF0..2FFB  ; FREE_PVAL   # IDEO DESC CHAR LEFT TO RIGHT..IDEO
   2FFC..2FFF  ; UNASSIGNED  # <reserved>..<reserved>
   3000..3004  ; FREE_PVAL   # IDEO SPACE..JAPAN INDUST STAND
   3005..3007  ; PVALID      # IDEO ITER MARK..IDEO NUMB ZERO
   3008..3029  ; FREE_PVAL   # LEFT ANGLE BRACKET..HANGZH NUM NINE
   302A..302D  ; PVALID      # IDEO LEVEL TONE MARK..IDEO ENT
   302E..302F  ; FREE_PVAL   # HANGUL SING DOT TONE MARK..WAVY DAS
   3031..3035  ; DISALLOWED  # VERT KANA REP MARK..VERT KANA REP M
   3036..303B  ; FREE_PVAL   # CIRCLED POSTAL MARK..HANGZH NUM THI
   303B        ; DISALLOWED  # VERT IDEO ITER MARK
   303C        ; PVALID      # MASU MARK
   303D..303F  ; DISALLOWED  # PART ALTER MARK..IDEO HALF FILL
   3040        ; UNASSIGNED  # <reserved>
   3041..3096  ; PVALID      # HIRAGANA LET SM A..HIRAGANA LET SMA
   3097..3098  ; UNASSIGNED  # <reserved>..<reserved>
   3099..309A  ; PVALID      # COMB KAT-HIR VOICED SOUND
   309B..309C  ; FREE_PVAL   # KAT-HIR VOICED SOUND MARK..KAT-HIR
   309D..309E  ; PVALID      # HIRAGANA ITER MARK..HIRAGANA VOICED
   309F..30A0  ; FREE_PVAL   # HIRAGANA DIGRAPH YORI..KAT-HIR DOU
   30A1..30FA  ; PVALID      # KATAKANA LET SM A..KATAKANA LET VO
   30FB        ; CONTEXTO    # KATAKANA MIDDLE DOT
   30FC..30FE  ; PVALID      # KAT-HIR PROLONGED SOUND MARK..KATA
   30FF        ; FREE_PVAL   # KATAKANA DIGRAPH KOTO
   3100..3104  ; UNASSIGNED  # <reserved>..<reserved>
   3105..312D  ; PVALID      # BOPOMOFO LET B..BOPOMOFO LET IH
   312E..3130  ; UNASSIGNED  # <reserved>..<reserved>
   3131..318E  ; DISALLOWED  # HANGUL LET KIYEOK..HANGUL LET ARAEA
   318F        ; UNASSIGNED  # <reserved>
   3190..319F  ; FREE_PVAL   # IDEO ANNO LINK MARK..IDEO ANNO MAN
   31A0..31BA  ; PVALID      # BOPOMOFO LET BU..BOPOMOFO LET ZY
   31BB..31BF  ; UNASSIGNED  # <reserved>..<reserved>
   31C0..31E3  ; FREE_PVAL   # CJK STROKE T..CJK STROKE Q
   31E4..31EF  ; UNASSIGNED  # <reserved>..<reserved>
   31F0..31FF  ; PVALID      # KATAKANA LET SM KU..KATAKANA LET SM
   3200..321E  ; FREE_PVAL   # PAREN HANGUL KIYEOK..PAREN KOREAN C
   321F        ; UNASSIGNED  # <reserved>
   3220..32FE  ; FREE_PVAL   # PAREN IDEO ONE..CIRCLED KATAKANA WO
   32FF        ; UNASSIGNED  # <reserved>
   3300..33FF  ; FREE_PVAL   # SQUARE APAATO..SQUARE GAL
   3400..4DB5  ; PVALID      # <CJK Ideograph Extension A>..<CJK I
   4DB6..4DBF  ; UNASSIGNED  # <reserved>..<reserved>
   4DC0..4DFF  ; FREE_PVAL   # HEX FOR THE CREATIVE HEAVEN..HEX FO
   4E00..9FCC  ; PVALID      # <CJK Ideograph, First>..<CJK Ideogr
   9FCE..9FFF  ; UNASSIGNED  # <reserved>..<reserved>
   A000..A48C  ; PVALID      # YI SYL IT..YI SYL YYR
   A48D..A48F  ; UNASSIGNED  # <reserved>..<reserved>
   A490..A4C6  ; FREE_PVAL   # YI RAD QOT..YI RAD KE
   A4C7..A4CF  ; UNASSIGNED  # <reserved>..<reserved>
   A4D0..A4FD  ; PVALID      # LISU LET BA..LISU LET TONE MYA JEU
   A4FE..A4FF  ; FREE_PVAL   # LISU PUNCT COMMA..LISU PUNCT FUL
   A500..A60C  ; PVALID      # VAI SYL EE..VAI SYL LENENER
   A60D..A60F  ; FREE_PVAL   # VAI COMMA..VAI QUEST MARK
   A610..A62B  ; PVALID      # VAI SYL NDOLE FA..VAI SYL NDOLE DO
   A62C..A63F  ; UNASSIGNED  # <reserved>..<reserved>
   A640..A66F  ; PVALID      # CYR CAP LET ZEMLYA..COMB CYR VZMET
   A670..A673  ; FREE_PVAL   # COMB CYR TEN MILLIONS SIGN..SLAVON
   A674..A67D  ; PVALID      # COMB CYR KAVYKA..COMB CYR PAYEROK
   A67E        ; FREE_PVAL   # CYR KAVYKA
   A67F..A697  ; PVALID      # CYR PAYEROK..CYR SM LET SHWE
   A698..A69E  ; UNASSIGNED  # <reserved>..<reserved>
   A67F        ; FREE_PVAL   # COMB CYR LET IOTIFIED E
   A6A0..A6E5  ; PVALID      # BAMUM LET A..BAMUM LET KI
   A6E6..A6EF  ; FREE_PVAL   # BAMUM LET MO..BAMUM LET KOGHOM
   A6F0..A6F1  ; PVALID      # BAMUM COMB MARK KOQNDON..BAMUM COMB
   A6F2..A6F7  ; FREE_PVAL   # BAMUM NJAEMLI..BAMUM QUEST MARK
   A6F8..A6FF  ; UNASSIGNED  # <reserved>..<reserved>
   A700..A716  ; FREE_PVAL   # MOD LET CHIN TONE YIN PING..MOD
   A717..A71F  ; PVALID      # MOD LET DOT VERT BAR..MOD L
   A720..A721  ; FREE_PVAL   # MOD LET STRESS AND HIGH TONE..MOD
   A722..A788  ; PVALID      # LAT CAP LET EGYPT ALEF..MOD LET LOW
   A789..A789  ; FREE_PVAL   # MOD LET COLON..MOD LET SH EQUALS SI
   A78B..A78E  ; PVALID      # LAT SM LET SALTILLO..LAT SM LET L W
   A78F..A7FA  ; UNASSIGNED  # <reserved>..<reserved>
   A7FB..A827  ; PVALID      # LAT EPIGRAPHIC LET REV F..SYLOTI NA
   A828..A82B  ; FREE_PVAL   # SYLOTI NAGRI POET MARK-1..SYLOTI NA
   A82C..A82F  ; UNASSIGNED  # <reserved>..<reserved>
   A830..A839  ; FREE_PVAL   # N INDIC FRACT ONE QUART..N INDIC QU
   A83A..A83F  ; UNASSIGNED  # <reserved>..<reserved>
   A840..A873  ; PVALID      # PHAGS-PA LET KA..PHAGS-PA LET CANDR
   A874..A877  ; FREE_PVAL   # PHAGS-PA SINGLE HEAD MARK..PHAGS-PA
   A878..A87F  ; UNASSIGNED  # <reserved>..<reserved>
   A880..A8C4  ; PVALID      # SAUR SIGN ANUSVARA..SAUR SIGN VIRAM
   A8C5..A8CD  ; UNASSIGNED  # <reserved>..<reserved>
   A8CE..A8CF  ; FREE_PVAL   # SAUR DANDA..SAUR DOUBLE DANDA
   A8D0..A8D9  ; PVALID      # SAUR DIG ZERO..SAUR DIG NINE
   A8DA..A8DF  ; UNASSIGNED  # <reserved>..<reserved>
   A8E0..A8F7  ; PVALID      # COMB DEVAN DIG ZERO..DEVAN SIGN CAN
   A8F8..A8FA  ; FREE_PVAL   # DEVAN SIGN PUSHPIKA..DEVAN CARET
   A8FB        ; PVALID      # DEVAN HEADSTROKE
   A8FC..A8FF  ; UNASSIGNED  # <reserved>..<reserved>
   A900..A92D  ; PVALID      # KAYAH LI DIG ZERO..KAYAH LI TONE CA
   A92E..A92F  ; FREE_PVAL   # KAYAH LI SIGN CWI..KAYAH LI SIGN SH
   A930..A953  ; PVALID      # REJANG LET KA..REJANG VIRAMA
   A954..A95E  ; UNASSIGNED  # <reserved>..<reserved>
   A95F        ; FREE_PVAL   # REJANG SECTION MARK
   A960..A97C  ; DISALLOWED  # HANGUL CHO TIKEUT-MIUEM..HANGUL CHO
   A97D..A97F  ; UNASSIGNED  # <reserved>..<reserved>
   A980..A9C0  ; PVALID      # JAV SIGN PANYANGGA..JAV PANGKON
   A9C1..A9CD  ; FREE_PVAL   # JAV LEFT RERENGGAN..JAV TURNED PADA
   A9CE        ; UNASSIGNED  # <reserved>
   A9CF..A9D9  ; PVALID      # JAV PANGRANGKEP..JAV DIG NINE
   A9DA..A9DD  ; UNASSIGNED  # <reserved>..<reserved>
   A9DE..A9DF  ; FREE_PVAL   # JAV PADA TIRTA TUMETES..JAV PADA I
   A9E0..A9FF  ; UNASSIGNED  # <reserved>..<reserved>
   AA00..AA36  ; PVALID      # CHAM LET A..CHAM CONS SIGN WA
   AA37..AA3F  ; UNASSIGNED  # <reserved>..<reserved>
   AA40..AA4D  ; PVALID      # CHAM LET FIN K..CHAM CONS SIGN FIN
   AA4E..AA4F  ; UNASSIGNED  # <reserved>..<reserved>
   AA50..AA59  ; PVALID      # CHAM DIG ZERO..CHAM DIG NINE
   AA5A..AA5B  ; UNASSIGNED  # <reserved>..<reserved>
   AA5C..AA5F  ; FREE_PVAL   # CHAM PUNCT SPIRAL..CHAM PUNCT TR
   AA60..AA76  ; PVALID      # MYAN LET KHAMTI GA..MYAN LOGOGRAM K
   AA77..AA79  ; FREE_PVAL   # MYAN SYM AITON EXCLAM..MYAN SYM AIT
   AA7A..AA7B  ; PVALID      # MYAN LET AITON RA..MYAN SIGN PAO KA
   AA7C..AA7F  ; UNASSIGNED  # <reserved>..<reserved>
   AA80..AAC2  ; PVALID      # TAI VIET LET LOW KO..TAI VIET TONE
   AAC3..AADA  ; UNASSIGNED  # <reserved>..<reserved>
   AADB..AADD  ; PVALID      # TAI VIET SYM KON..TAI VIET SYM SAM
   AADE..AADF  ; FREE_PVAL   # TAI VIET SYM HO HOI..TAI VIET SYM K
   AAE0..AAEF  ; PVALID      # MEETEI MAYEK LET E..MEETEI MAYEK VO
   AAF0..AAF1  ; FREE_PVAL   # MEETEI MAYEK CHEIKHAN..MEETEI MAYEK
   AAF2..AAF6  ; PVALID      # MEETEI MAYEK ANJI..MEETEI MAYEK VIR
   AAF7..AAFF  ; UNASSIGNED  # <reserved>..<reserved>
   AB01..AB2E  ; PVALID      # ETHI SYL TTHU..ETHI SYL BBO
   AB2F..ABBF  ; UNASSIGNED  # <reserved>..<reserved>
   ABC0..ABEA  ; PVALID      # MEETEI MAYEK LET KOK..MEETEI MAYEK
   ABEB        ; FREE_PVAL   # MEETEI MAYEK CHEIKHEI
   ABEC..ABED  ; PVALID      # MEETEI MAYEK LUM IYEK..MEETEI MAYEK
   ABEE..ABEF  ; UNASSIGNED  # <reserved>..<reserved>
   ABF0..ABF9  ; PVALID      # MEETEI MAYEK DIG ZERO..MEETEI MAYEK
   ABFA..ABFF  ; UNASSIGNED  # <reserved>..<reserved>
   AC00..D7A3  ; PVALID      # <Hangul Syllable>..<Hangul Syllable
   D7A4..D7AF  ; UNASSIGNED  # <reserved>..<reserved>
   D7B0..D7C6  ; DISALLOWED  # HANGUL JUNG O-YEO..HANGUL JUNG ARAE
   D7C7..D7CA  ; UNASSIGNED  # <reserved>..<reserved>
   D7CB..D7FB  ; DISALLOWED  # HANGUL JONG NIEUN-RIEUL..HANGUL JON
   D7FC..D7FF  ; UNASSIGNED  # <reserved>..<reserved>
   D800..F8FF  ; DISALLOWED  # <Non Private Use High Surrogate>..<
   F900..FA0D  ; FREE_PVAL   # CJK COMP IDEO-F900..CJK COMP IDEO-F
   FA0E..FA0F  ; PVALID      # CJK COMP IDEO-FA0E..CJK COMP IDEO
   FA10        ; FREE_PVAL   # CJK COMP IDEO-FA10
   FA11        ; PVALID      # CJK COMP IDEO-FA11
   FA12        ; FREE_PVAL   # CJK COMP IDEO-FA12
   FA13..FA14  ; PVALID      # CJK COMP IDEO-FA13..CJK COMP IDEO
   FA15..FA1E  ; FREE_PVAL   # CJK COMP IDEO-FA15..CJK COMP IDEO
   FA1F        ; PVALID      # CJK COMP IDEO-FA1F
   FA20        ; FREE_PVAL   # CJK COMP IDEO-FA20
   FA21        ; PVALID      # CJK COMP IDEO-FA21
   FA22        ; FREE_PVAL   # CJK COMP IDEO-FA22
   FA23..FA24  ; PVALID      # CJK COMP IDEO-FA23..CJK COMP IDEO
   FA25..FA26  ; FREE_PVAL   # CJK COMP IDEO-FA25..CJK COMP IDEO
   FA27..FA29  ; PVALID      # CJK COMP IDEO-FA27..CJK COMP IDEO
   FA2A..FA6D  ; FREE_PVAL   # CJK COMP IDEO-FA2A..CJK COMP IDEO
   FA6E..FA6F  ; UNASSIGNED  # <reserved>..<reserved>
   FA70..FAD9  ; FREE_PVAL   # CJK COMP IDEO-FA70..CJK COMP IDEO
   FADA..FAFF  ; UNASSIGNED  # <reserved>..<reserved>
   FB00..FB06  ; FREE_PVAL   # LAT SM LIG FF..LAT SM LIG ST
   FB07..FB12  ; UNASSIGNED  # <reserved>..<reserved>
   FB13..FB17  ; FREE_PVAL   # ARMENIAN SM LIG MEN NOW..ARMENIAN SM
   FB18..FB1C  ; UNASSIGNED  # <reserved>..<reserved>
   FB1D        ; FREE_PVAL   # HEBR LET YOD W HIRIQ
   FB1E        ; PVALID      # HEBR PNT JUDEO-SPANISH VARIKA
   FB1F..FB36  ; FREE_PVAL   # HEBR LIG YIDDISH YOD YOD PATAH..HEBRE
   FB37        ; UNASSIGNED  # <reserved>
   FB38..FB3C  ; FREE_PVAL   # HEBR LET TET W DAGESH..HEBR LET
   FB3D        ; UNASSIGNED  # <reserved>
   FB3E        ; FREE_PVAL   # HEBR LET MEM W DAGESH
   FB3F        ; UNASSIGNED  # <reserved>
   FB40..FB41  ; FREE_PVAL   # HEBR LET NUN W DAGESH..HEBR LET
   FB42        ; UNASSIGNED  # <reserved>
   FB43..FB44  ; FREE_PVAL   # HEBR LET FIN PE W DAGESH..HEBR L
   FB45        ; UNASSIGNED  # <reserved>
   FB46..FBC1  ; FREE_PVAL   # HEBR LET TSADI W DAGESH..ARAB SYM S
   FBC2..FBD2  ; UNASSIGNED  # <reserved>..<reserved>
   FBD3..FD3F  ; FREE_PVAL   # ARAB LET NG ISO FORM..ORNATE RIGHT
   FD40..FD4F  ; UNASSIGNED  # <reserved>..<reserved>
   FD50..FD8F  ; FREE_PVAL   # ARAB LIG TEH W JEEM W MEEM INIT
   FD90..FD91  ; UNASSIGNED  # <reserved>..<reserved>
   FD92..FDC7  ; FREE_PVAL   # ARAB LIG MEEM W JEEM W KHAH INI
   FDC8..FDEF  ; UNASSIGNED  # <reserved>..<reserved>
   FDF0..FDFD  ; FREE_PVAL   # ARAB LIG SALLA USED..ARAB LIG BISMI
   FDFE..FDFF  ; UNASSIGNED  # <reserved>..<reserved>
   FE00..FE19  ; FREE_PVAL   # VAR SEL-1..PRESENTATION FORM FOR VE
   FE1A..FE1F  ; UNASSIGNED  # <reserved>..<reserved>
   FE20..FE26  ; PVALID      # COMB LIG LEFT HALF..COMB CONJ MACRO
   FE27..FE2F  ; UNASSIGNED  # <reserved>..<reserved>
   FE30..FE52  ; FREE_PVAL   # PRES FORM FOR VERT TWO DOT LEAD..SM
   FE53        ; UNASSIGNED  # <reserved>
   FE54..FE66  ; FREE_PVAL   # SM SEMICOLON..SM EQUALS SIGN
   FE67        ; UNASSIGNED  # <reserved>
   FE68..FE6B  ; FREE_PVAL   # SM REV SOLIDUS..SM COMM AT
   FE6C..FE6F  ; UNASSIGNED  # <reserved>..<reserved>
   FE70..FE72  ; FREE_PVAL   # ARAB FATHATAN ISO FORM..ARAB DAMMAT
   FE73        ; PVALID      # ARAB TAIL FRAGMENT
   FE74        ; FREE_PVAL   # ARAB KASRATAN ISO FORM
   FE75        ; UNASSIGNED  # <reserved>
   FE76..FEFC  ; FREE_PVAL   # ARAB FATHA ISO FORM..ARAB LIG LAM W
   FEFD..FEFE  ; UNASSIGNED  # <reserved>..<reserved>
   FEFF        ; DISALLOWED  # ZERO WIDTH NO-BREAK SPACE
   FF00        ; UNASSIGNED  # <reserved>
   FF01..FFBE  ; FREE_PVAL   # FULLW EXCLAM MARK..HALFW HANGUL
   FFBF..FFC1  ; UNASSIGNED  # <reserved>..<reserved>
   FFC2..FFC7  ; FREE_PVAL   # HALFW HANGUL LET A..HALFW HANGUL
   FFC8..FFC9  ; UNASSIGNED  # <reserved>..<reserved>
   FFCA..FFCF  ; FREE_PVAL   # HALFW HANGUL LET YEO..HALFW HANGU
   FFD0..FFD1  ; UNASSIGNED  # <reserved>..<reserved>
   FFD2..FFD7  ; FREE_PVAL   # HALFW HANGUL LET YO..HALFW HANGUL
   FFD8..FFD9  ; UNASSIGNED  # <reserved>..<reserved>
   FFDA..FFDC  ; FREE_PVAL   # HALFW HANGUL LET EU..HALFW HANGUL
   FFDD..FFDF  ; UNASSIGNED  # <reserved>..<reserved>
   FFE0..FFE6  ; FREE_PVAL   # FULLW CENT SIGN..FULLW WON SIGN
   FFE7        ; UNASSIGNED  # <reserved>
   FFE8..FFEE  ; FREE_PVAL   # HALFW FORMS LIGHT VERT..HALFW WH
   FFEF..FFF8  ; UNASSIGNED  # <reserved>..<reserved>
   FFF9..FFFB  ; DISALLOWED  # INTERL ANNO ANCHOR..INTERL ANNO TER
   FFFC..FFFD  ; FREE_PVAL   # OBJECT REPL CHAR..REPL CHAR
   10000..1000B; PVALID      # LIN B SYL B008 A..LIN B SYL
   1000C       ; UNASSIGNED  # <reserved>
   1000D..10026; PVALID      # LIN B SYL B036 JO..LIN B SYL
   10027       ; UNASSIGNED  # <reserved>
   10028..1003A; PVALID      # LIN B SYL B060 RA..LIN B SYL
   1003B       ; UNASSIGNED  # <reserved>
   1003C..1003D; PVALID      # LIN B SYL B017 ZA..LIN B SYL
   1003E       ; UNASSIGNED  # <reserved>
   1003F..1004D; PVALID      # LIN B SYL B020 ZO..LIN B SYL
   1004E..1004F; UNASSIGNED  # <reserved>..<reserved>
   10050..1005D; PVALID      # LIN B SYM B018..LIN B SYM B089
   1005E..1007F; UNASSIGNED  # <reserved>..<reserved>
   10080..100FA; PVALID      # LIN B IDEO B100 MAN..LIN B IDEO
   100FB..100FF; UNASSIGNED  # <reserved>..<reserved>
   10100..10102; FREE_PVAL   # AEG WORD SEP LINE..AEG CHECK MAR
   10103..10106; UNASSIGNED  # <reserved>..<reserved>
   10107..10133; FREE_PVAL   # AEG NUM ONE..AEG NUM NINETY THOU
   10134..10136; UNASSIGNED  # <reserved>..<reserved>
   10137..1018A; FREE_PVAL   # AEG WEIGHT BASE UNIT..GREEK ZERO SI
   1018B..1018F; UNASSIGNED  # <reserved>..<reserved>
   10190..1019B; FREE_PVAL   # ROM SEXTANS SIGN..ROM CENTURIAL SIG
   1019C..101CF; UNASSIGNED  # <reserved>..<reserved>
   101D0..101FC; FREE_PVAL   # PHAISTOS DISC SIGN PED..PHAISTOS DI
   101FD       ; PVALID      # PHAISTOS DISC SIGN COMB OBLIQUE STR
   101FE..1027F; UNASSIGNED  # <reserved>..<reserved>
   10280..1029C; PVALID      # LYCIAN LET A..LYCIAN LET X
   1029D..1029F; UNASSIGNED  # <reserved>..<reserved>
   102A0..102D0; PVALID      # CARIAN LET A..CARIAN LET UUU3
   102D1..102FF; UNASSIGNED  # <reserved>..<reserved>
   10300..1031E; PVALID      # OLD ITAL LET A..OLD ITAL LET UU
   1031F       ; UNASSIGNED  # <reserved>
   10320..10323; FREE_PVAL   # OLD ITAL NUM ONE..OLD ITAL NUM F
   10324..1032F; UNASSIGNED  # <reserved>..<reserved>
   10330..10340; PVALID      # GOTH LET AHSA..GOTH LET PAIRTHRA
   10341       ; FREE_PVAL   # GOTH LET NINETY
   10342..10349; PVALID      # GOTH LET RAIDA..GOTH LET OTHAL
   1034A       ; FREE_PVAL   # GOTH LET NINE HUNDRED
   1034B..1037F; UNASSIGNED  # <reserved>..<reserved>
   10380..1039D; PVALID      # UGAR LET ALPA..UGAR LET SSU
   1039E       ; UNASSIGNED  # <reserved>
   1039F       ; FREE_PVAL   # UGAR WORD DIVIDER
   103A0..103C3; PVALID      # OLD PERS SIGN A..OLD PERS SIGN HA
   103C4..103C7; UNASSIGNED  # <reserved>..<reserved>
   103C8..103CF; PVALID      # OLD PERS SIGN AURAMAZDAA..OLD PERS
   103D0..103D5; FREE_PVAL   # OLD PERS WORD DIVIDER..OLD PERS NUM
   103D6..103FF; UNASSIGNED  # <reserved>..<reserved>
   10400..1049D; PVALID      # DESERET CAP LET LONG I..OSMANYA LET
   1049E..1049F; UNASSIGNED  # <reserved>..<reserved>
   104A0..104A9; PVALID      # OSMANYA DIG ZERO..OSMANYA DIG NINE
   104AA..107FF; UNASSIGNED  # <reserved>..<reserved>
   10800..10805; PVALID      # CYPRIOT SYL A..CYPRIOT SYL JA
   10806..10807; UNASSIGNED  # <reserved>..<reserved>
   10808       ; PVALID      # CYPRIOT SYL JO
   10809       ; UNASSIGNED  # <reserved>
   1080A..10835; PVALID      # CYPRIOT SYL KA..CYPRIOT SYL WO
   10836       ; UNASSIGNED  # <reserved>
   10837..10838; PVALID      # CYPRIOT SYL XA..CYPRIOT SYL XE
   10839..1083B; UNASSIGNED  # <reserved>..<reserved>
   1083C       ; PVALID      # CYPRIOT SYL ZA
   1083D..1083E; UNASSIGNED  # <reserved>..<reserved>
   1083F..10855; PVALID      # CYPRIOT SYL ZO..IMP ARAM LET TAW
   10856       ; UNASSIGNED  # <reserved>
   10857..1085F; FREE_PVAL   # IMP ARAM SECT SIGN..IMP ARAM
   10860..108FF; UNASSIGNED  # <reserved>..<reserved>
   10900..10915; PVALID      # PHOEN LET ALF..PHOEN LET TAU
   10916..1091B; FREE_PVAL   # PHOEN NUM ONE..PHOEN NUM THR
   1091C..1091E; UNASSIGNED  # <reserved>..<reserved>
   1091F       ; FREE_PVAL   # PHOEN WORD SEP
   10920..10939; PVALID      # LYDIAN LET A..LYDIAN LET C
   1093A..1093E; UNASSIGNED  # <reserved>..<reserved>
   1093F       ; FREE_PVAL   # LYDIAN TRIANGULAR MARK
   10940..109FF; UNASSIGNED  # <reserved>..<reserved>
   10A00..10A03; PVALID      # KHARO LET A..KHARO VOW SIGN V
   10A04       ; UNASSIGNED  # <reserved>
   10A05..10A06; PVALID      # KHARO VOW SIGN E..KHARO VOW SI
   10A07..10A0B; UNASSIGNED  # <reserved>..<reserved>
   10A0C..10A13; PVALID      # KHARO VOW LEN MARK..KHARO LET
   10A14       ; UNASSIGNED  # <reserved>
   10A15..10A17; PVALID      # KHARO LET CA..KHARO LET JA
   10A18       ; UNASSIGNED  # <reserved>
   10A19..10A33; PVALID      # KHARO LET NYA..KHARO LET TTT
   10A34..10A37; UNASSIGNED  # <reserved>..<reserved>
   10A38..10A3A; PVALID      # KHARO SIGN BAR ABOVE..KHARO SIGN D
   10A3B..10A3E; UNASSIGNED  # <reserved>..<reserved>
   10A3F       ; PVALID      # KHARO VIRAMA
   10A40..10A47; FREE_PVAL   # KHARO DIG ONE..KHARO NUM ONE
   10A48..10A4F; UNASSIGNED  # <reserved>..<reserved>
   10A50..10A58; FREE_PVAL   # KHARO PUNCT DOT..KHARO PUNCT
   10A59..10A5F; UNASSIGNED  # <reserved>..<reserved>
   10A60..10A7C; PVALID      # OLD S ARAB LET HE..OLD SOUTH ARAB
   10A7D..10A7F; FREE_PVAL   # OLD S ARAB NUM ONE..OLD SOUTH ARAB
   10A80..10AFF; UNASSIGNED  # <reserved>..<reserved>
   10B00..10B35; PVALID      # AVESTAN LET A..AVESTAN LET HE
   10B36..10B38; UNASSIGNED  # <reserved>..<reserved>
   10B39..10B3F; FREE_PVAL   # AVESTAN ABBR MARK..LARGE ONE RING O
   10B40..10B55; PVALID      # INSCRIPT PARTHIAN LET ALEPH..INSCRI
   10B56..10B57; UNASSIGNED  # <reserved>..<reserved>
   10B58..10B5F; FREE_PVAL   # INSCRIPT PARTHIAN NUM ONE..INSCRIPT
   10B60..10B72; PVALID      # INSCRIPT PAHLAVI LET ALEPH..INSCRIP
   10B73..10B77; UNASSIGNED  # <reserved>..<reserved>
   10B78..10B7F; FREE_PVAL   # INSCRIPT PAHLAVI NUM ONE..INSCRIPT
   10B80..10BFF; UNASSIGNED  # <reserved>..<reserved>
   10C00..10C48; PVALID      # OLD TURK LET ORKHON A..OLD TURK LET
   10C49..10E5F; UNASSIGNED  # <reserved>..<reserved>
   10E60..10E7E; FREE_PVAL   # RUMI DIG ONE..RUMI FRACTION TWO THI
   10E7F..10FFF; UNASSIGNED  # <reserved>..<reserved>
   11000..11046; PVALID      # BRAHMI SIGN CANDRABINDU..BRAHMI VIR
   11047..1104D; FREE_PVAL   # BRAHMI DANDA..BRAHMI PUNCT LOTUS
   1104E..11051; UNASSIGNED  # <reserved>..<reserved>
   11052..1106F; FREE_PVAL   # BRAHMI NUM ONE..BRAHMI DIG NINE
   11070..1107F; UNASSIGNED  # <reserved>..<reserved>
   11080..110BA; PVALID      # KAITHI SIGN CANDRABINDU..KAITHI SIG
   110BB..110C1; FREE_PVAL   # KAITHI ABBR SIGN..KAITHI DOUBLE DAN
   110C2..110CF; UNASSIGNED  # <reserved>..<reserved>
   110D0..110F9; PVALID      # SORA SOMPENG LETTER SAH..SORA SOMPE
   11100..1113F; PVALID      # CHAKMA SIGN CANDRABINDU..CHAKMA DIG NI
   11140..11143; FREE_PVAL   # CHAKMA SECT MARK..CHAKMA QUEST MARK
   11144..1117F; UNASSIGNED  # <reserved>..<reserved>
   11180..111C4; PVALID      # SHARADA SIGN CANDRABINDU..SHARADA OM
   111C5..111C8; FREE_PVAL   # SHARADA DANDA..SHARADA SEPARATOR
   111C9..111CF; UNASSIGNED  # <reserved>..<reserved>
   111D0..111D9; PVALID      # SHARADA DIG ZERO..SHARADA DIG NINE
   111DA..1167F; UNASSIGNED  # <reserved>..<reserved>
   11680..116C9; PVALID      # TAKRI LET A..TAKRI DIG NINE
   116CF..1FFFF; UNASSIGNED  # <reserved>..<reserved>
   12000..1236E; PVALID      # CUNEI SIGN A..CUNEI SIGN ZUM
   1236F..123FF; UNASSIGNED  # <reserved>..<reserved>
   12400..12462; FREE_PVAL   # CUNEI NUM SIGN TWO ASH..CUNEI NUM
   12463..1246F; UNASSIGNED  # <reserved>..<reserved>
   12470..12473; FREE_PVAL   # CUNEI PUNCT SIGN OLD ASSYRIAN WORD
   12474..12FFF; UNASSIGNED  # <reserved>..<reserved>
   13000..1342E; PVALID      # EGYPT HIERO A001..EGYPT HIERO AA032
   1342F..167FF; UNASSIGNED  # <reserved>..<reserved>
   16800..16A38; PVALID      # BAMUM LET PHASE-A NGKUE MFON..BAMUN LE
   16A39..16EFF; UNASSIGNED  # <reserved>..<reserved>
   16F00..16F44; PVALID      # MIAO LET PA..MIAO LET HHA
   16F45..16F4F; UNASSIGNED  # <reserved>..<reserved>
   16F50..16F9F; PVALID      # MIAO LET NAS..MIAO LET REF TONE-8
   16FA0..1AFFF; UNASSIGNED  # <reserved>..<reserved>
   1B000..1B001; PVALID      # KATA LET ARCH E..KATA LET ARCH YE
   1B002..1CFFF; UNASSIGNED  # <reserved>..<reserved>
   1D000..1D0F5; FREE_PVAL   # BYZ MUS SYM PSILI..BYZ MUS
   1D0F6..1D0FF; UNASSIGNED  # <reserved>..<reserved>
   1D100..1D126; FREE_PVAL   # MUS SYM SINGLE BARLINE..MUS SYMBOL
   1D127..1D128; UNASSIGNED  # <reserved>..<reserved>
   1D129..1D1DD; FREE_PVAL   # MUS SYM MULT MEASURE REST..MUS PES SUB
   1D1DE..1D1FF; UNASSIGNED  # <reserved>..<reserved>
   1D200..1D245; FREE_PVAL   # GREEK VOCAL NOTATION SYM-1..GREEK MUS
   1D246..1D2FF; UNASSIGNED  # <reserved>..<reserved>
   1D300..1D356; DISALLOWED  # MONOG FOR EARTH..TETRAG FOR FOSTERING
   1D357..1D35F; UNASSIGNED  # <reserved>..<reserved>
   1D360..1D371; DISALLOWED  # COUNT ROD UNIT DIG ONE..COUNT ROD TE
   1D372..1D3FF; UNASSIGNED  # <reserved>..<reserved>
   1D400..1D454; FREE_PVAL   # MATH BOLD CAP A..MATH IT
   1D455       ; UNASSIGNED  # <reserved>
   1D456..1D49C; FREE_PVAL   # MATH ITAL SM I..MATH SC
   1D49D       ; UNASSIGNED  # <reserved>
   1D49E..1D49F; FREE_PVAL   # MATH SCRIPT CAP C..MATH
   1D4A0..1D4A1; UNASSIGNED  # <reserved>..<reserved>
   1D4A2       ; FREE_PVAL   # MATH SCRIPT CAP G
   1D4A3..1D4A4; UNASSIGNED  # <reserved>..<reserved>
   1D4A5..1D4A6; FREE_PVAL   # MATH SCRIPT CAP J..MATH
   1D4A7..1D4A8; UNASSIGNED  # <reserved>..<reserved>
   1D4A9..1D4AC; FREE_PVAL   # MATH SCRIPT CAP N..MATH
   1D4AD       ; UNASSIGNED  # <reserved>
   1D4AE..1D4B9; FREE_PVAL   # MATH SCRIPT CAP S..MATH
   1D4BA       ; UNASSIGNED  # <reserved>
   1D4BB       ; FREE_PVAL   # MATH SCRIPT SM F
   1D4BC       ; UNASSIGNED  # <reserved>
   1D4BD..1D4C3; FREE_PVAL   # MATH SCRIPT SM H..MATH SC
   1D4C4       ; UNASSIGNED  # <reserved>
   1D4C5..1D505; FREE_PVAL   # MATH SCRIPT SM P..MATH FR
   1D506       ; UNASSIGNED  # <reserved>
   1D507..1D50A; FREE_PVAL   # MATH FRAKTUR CAP D..MATH
   1D50B..1D50C; UNASSIGNED  # <reserved>..<reserved>
   1D50D..1D514; FREE_PVAL   # MATH FRAKTUR CAP J..MATH
   1D515       ; UNASSIGNED  # <reserved>
   1D516..1D51C; FREE_PVAL   # MATH FRAKTUR CAP S..MATH
   1D51D       ; UNASSIGNED  # <reserved>
   1D51E..1D539; FREE_PVAL   # MATH FRAKTUR SM A..MATH D
   1D53A       ; UNASSIGNED  # <reserved>
   1D53B..1D53E; FREE_PVAL   # MATH DOUBLE-STRUCK CAP D..MATHEM
   1D53F       ; UNASSIGNED  # <reserved>
   1D540..1D544; FREE_PVAL   # MATH DOUBLE-STRUCK CAP I..MATHEM
   1D545       ; UNASSIGNED  # <reserved>
   1D546       ; FREE_PVAL   # MATH DOUBLE-STRUCK CAP O
   1D547..1D549; UNASSIGNED  # <reserved>..<reserved>
   1D54A..1D550; FREE_PVAL   # MATH DOUBLE-STRUCK CAP S..MATHEM
   1D551       ; UNASSIGNED  # <reserved>
   1D552..1D6A5; FREE_PVAL   # MATH DOUBLE-STRUCK SM A..MATHEMAT
   1D6A6..1D6A7; UNASSIGNED  # <reserved>..<reserved>
   1D6A8..1D7CB; FREE_PVAL   # MATH BOLD CAP ALPHA..MATHEMATICA
   1D7CC..1D7CD; UNASSIGNED  # <reserved>..<reserved>
   1D7CE..1D7FF; FREE_PVAL   # MATH BOLD DIG ZERO..MATH M
   1D800..1EDFF; UNASSIGNED  # <reserved>..<reserved>
   1EE00..1EE03; FREE_PVAL   # ARAB MATH ALEF..ARAB MATH DAL
   1EE04       ; UNASSIGNED  # <reserved>
   1EE05..1EE1F; FREE_PVAL   # ARAB MATH WAW..ARAB MATH DOTLESS QAF
   1EE20       ; UNASSIGNED  # <reserved>
   1EE21..1EE22; FREE_PVAL   # ARAB MATH INIT BEH..ARAB MATH INIT JEE
   1EE23       ; UNASSIGNED  # <reserved>
   1EE24       ; FREE_PVAL   # ARAB MATH INIT HEH
   1EE25..1EE26; UNASSIGNED  # <reserved>..<reserved>
   1EE27       ; FREE_PVAL   # ARAB MATH INIT HAH
   1EE28       ; UNASSIGNED  # <reserved>
   1EE29..1EE32; FREE_PVAL   # ARAB MATH INIT YEH..ARAB MATH INIT QAF
   1EE33       ; UNASSIGNED  # <reserved>
   1EE34..1EE39; FREE_PVAL   # ARAB MATH INIT SHEEN..ARAB MATH INIT
   1EE3A       ; UNASSIGNED  # <reserved>
   1EE3B       ; FREE_PVAL   # ARAB MATH INIT GHAIN
   1EE3C..1EE41; UNASSIGNED  # <reserved>..<reserved>
   1EE42       ; FREE_PVAL   # ARAB MATH TAILED JEEM
   1EE43..1EE46; UNASSIGNED  # <reserved>..<reserved>
   1EE47       ; FREE_PVAL   # ARAB MATH TAILED HAH
   1EE48       ; UNASSIGNED  # <reserved>
   1EE49       ; FREE_PVAL   # ARAB MATH TAILED YEH
   1EE4A       ; UNASSIGNED  # <reserved>
   1EE4B       ; FREE_PVAL   # ARAB MATH TAILED LAM
   1EE4C       ; UNASSIGNED  # <reserved>
   1EE4D..1EE4F; FREE_PVAL   # ARAB MATH TAILED NOON..ARAB MATH TAILE
   1EE50       ; UNASSIGNED  # <reserved>
   1EE51..1EE52; FREE_PVAL   # ARAB MATH TAILED QAF..ARAB MATH TAILED
   1EE53       ; UNASSIGNED  # <reserved>
   1EE54       ; FREE_PVAL   # ARAB MATH TAILED SHEEN
   1EE55..1EE56; UNASSIGNED  # <reserved>..<reserved>
   1EE57       ; FREE_PVAL   # ARAB MATH TAILED KHAH
   1EE58       ; UNASSIGNED  # <reserved>
   1EE59       ; FREE_PVAL   # ARAB MATH TAILED DAD
   1EE5A       ; UNASSIGNED  # <reserved>
   1EE5B       ; FREE_PVAL   # ARAB MATH TAILED GHAIN
   1EE5C       ; UNASSIGNED  # <reserved>
   1EE5D       ; FREE_PVAL   # ARAB MATH TAILED DOTLESS NOON
   1EE5E       ; UNASSIGNED  # <reserved>
   1EE5F       ; FREE_PVAL   # ARAB MATH TAILED DOTLESS GHAIN
   1EE60       ; UNASSIGNED  # <reserved>
   1EE61..1EE62; FREE_PVAL   # ARAB MATH STRETCHED BEH..ARAB MATH STR
   1EE63       ; UNASSIGNED  # <reserved>
   1EE64       ; FREE_PVAL   # ARAB MATH STRETCHED HEH
   1EE65..1EE66; UNASSIGNED  # <reserved>..<reserved>
   1EE67..1EE6A; FREE_PVAL   # ARAB MATH STRETCHED HAH..ARAB MATH STR
   1EE6B       ; UNASSIGNED  # <reserved>
   1EE6C..1EE72; FREE_PVAL   # ARAB MATH STRETCHED MEEM..ARAB MATH ST
   1EE73       ; UNASSIGNED  # <reserved>
   1EE74..1EE77; FREE_PVAL   # ARAB MATH STRETCHED SHEEN..ARAB MATH S
   1EE78       ; UNASSIGNED  # <reserved>
   1EE79..1EE7C; FREE_PVAL   # ARAB MATH STRETCHED DAD..ARAB MATH STR
   1EE7D       ; UNASSIGNED  # <reserved>
   1EE7E       ; FREE_PVAL   # ARAB MATH STRETCHED DOTLESS FEH
   1EE7F       ; UNASSIGNED  # <reserved>
   1EE80..1EE89; FREE_PVAL   # ARAB MATH LOOPED ALEF..ARAB MATH LOOPE
   1EE8A       ; UNASSIGNED  # <reserved>
   1EE8B..1EE9B; FREE_PVAL   # ARAB MATH LOOPED LAM..ARAB MATH LOOPED
   1EE9C..1EEA0; UNASSIGNED  # <reserved>..<reserved>
   1EEA1..1EEA3; FREE_PVAL   # ARAB MATH DOUBLE-STRUCK BEH..ARAB MATH
   1EEA4       ; UNASSIGNED  # <reserved>
   1EEA5..1EEA9; FREE_PVAL   # ARAB MATH DOUBLE-STRUCK WAW..ARAB MATH
   1EEAA       ; UNASSIGNED  # <reserved>
   1EEAB..1EEBB; FREE_PVAL   # ARAB MATH DOUBLE-STRUCK LAM..ARAB MATH
   1EEBC..1EEEF; UNASSIGNED  # <reserved>..<reserved>
   1EEF0..1EEF1; FREE_PVAL   # ARAB MATH OP MEEM W HAH W TATWHEEL..AR
   1EEF2..1EFFF; UNASSIGNED  # <reserved>..<reserved>
   1F000..1F02B; FREE_PVAL   # MAHJONG TILE EAST WIND..MAHJONG TILE B
   1F02C..1F02F; UNASSIGNED  # <reserved>..<reserved>
   1F030..1F093; DISALLOWED  # DOMINO TILE HORIZ BACK..DOMINO TILE VE
   1F094..1F09F; UNASSIGNED  # <reserved>..<reserved>
   1F0A0..1F0AE; FREE_PVAL   # PLAY CARD BACK..PLAY CARD KING OF SPAD
   1F0AF..1F0B0; UNASSIGNED  # <reserved>..<reserved>
   1F0B1..1F0BE; FREE_PVAL   # PLAY CARD ACE OF HEARTS..PLAY CARD KIN
   1F0BF..1F0C0; UNASSIGNED  # <reserved>..<reserved>
   1F0C1..1F0CF; FREE_PVAL   # PLAY CARD ACE OF DIAMONDS..PLAY CARD B
   1F0D0       ; UNASSIGNED  # <reserved>
   1F0D1..1F0DF; FREE_PVAL   # PLAY CARD ACE OF CLUBS..PLAY CARD WHIT
   1F0E0..1F0FF; UNASSIGNED  # <reserved>..<reserved>
   1F100..1F10A; FREE_PVAL   # DIG ZERO FULL STOP..DIG NINE COMMA
   1F10B..1F10F; UNASSIGNED  # <reserved>..<reserved>
   1F110..1F12E; DISALLOWED  # PARENTHESIZED LAT CAP LET A..CIRCLE
   1F12F       ; UNASSIGNED  # <reserved>
   1F130..1F16B; FREE_PVAL   # SQUARED LAT CAP LET A..RAISED MD SIGN
   1F16C..1F16F; UNASSIGNED  # <reserved>..<reserved>
   1F170..1F19A; FREE_PVAL   # NEG SQ LAT CAP LET A..SQUARED VS
   1F19B..1F1E5; UNASSIGNED  # <reserved>..<reserved>
   1F1E6..1F202; FREE_PVAL   # REG IND SYMB LET A..SQ KATAKANA SA
   1F203..1F20F; UNASSIGNED  # <reserved>..<reserved>
   1F210..1F23A; FREE_PVAL   # SQ CJK UNIF IDEO-624B..SQ CJK UNIF IDE
   1F23B..1F23F; UNASSIGNED  # <reserved>..<reserved>
   1F240..1F248; FREE_PVAL   # TORT SH BRACK CJK UNIF IDEO-672C..TORT
   1F249..1F24F; UNASSIGNED  # <reserved>..<reserved>
   1F250..1F251; FREE_PVAL   # CIRC IDEO ADVANTAGE..CIRC IDEO ACCEPT
   1F252..1F2FF; UNASSIGNED  # <reserved>..<reserved>
   1F300..1F320; FREE_PVAL   # CYCLONE..SHOOTING STAR
   1F321..1F32F; UNASSIGNED  # <reserved>..<reserved>
   1F330..1F325; FREE_PVAL   # CHESTNUT..CACTUS
   1F326       ; UNASSIGNED  # <reserved>
   1F337..1F37C; FREE_PVAL   # TULIP..BABY BOTTLE
   1F37D..1F37F; UNASSIGNED  # <reserved>..<reserved>
   1F380..1F393; FREE_PVAL   # RIBBON..GRADUATION CAP
   1F394..1F39F; UNASSIGNED  # <reserved>..<reserved>
   1F3A0..1F3C4; FREE_PVAL   # CAROUSEL HORSE..SURFER
   1F3C5       ; UNASSIGNED  # <reserved>
   1F3C6..1F3CA; FREE_PVAL   # TROPHY..SWIMMER
   1F3CB..1F3DF; UNASSIGNED  # <reserved>..<reserved>
   1F3E0..1F3F0; FREE_PVAL   # HOUSE BUILDING..EUROPEAN CASTLE
   1F3F1..1F3FF; UNASSIGNED  # <reserved>..<reserved>
   1F400..1F43E; FREE_PVAL   # RAT..PAW PRINTS
   1F43F       ; UNASSIGNED  # <reserved>
   1F440       ; FREE_PVAL   # EYES
   1F441       ; UNASSIGNED  # <reserved>
   1F442..1F4F7; FREE_PVAL   # EAR..CAMERA
   1F4F8       ; UNASSIGNED  # <reserved>
   1F4F9..1F4FC; FREE_PVAL   # VIDEOCASSETTE
   1F4FD..1F4FF; UNASSIGNED  # <reserved>..<reserved>
   1F500..1F53D; FREE_PVAL   # TWISTED RIGHTWARDS ARROWS..DOWN-POINTI
   1F53E..1F53F; UNASSIGNED  # <reserved>..<reserved>
   1F540..1F543; FREE_PVAL   # CIRCLED CROSS POMMEE..NOTCHED LEFT SEM
   1F544..1F54F; UNASSIGNED  # <reserved>..<reserved>
   1F550..1F567; FREE_PVAL   # CLOCK FACE ONE OCLOCK..CLOCK FACE TWEL
   1F568..1F5FA; UNASSIGNED  # <reserved>..<reserved>
   1F5FB..1F640; FREE_PVAL   # MOUNT FUJI..WEARY CAT FACE
   1F641..1F644; UNASSIGNED  # <reserved>..<reserved>
   1F645..1F6C5; FREE_PVAL   # FACE WITH NO GOOD GESTURE..LEFT LUGGAG
   1F6C6..1F6FF; UNASSIGNED  # <reserved>..<reserved>
   1F700..1F773; FREE_PVAL   # ALCHEMICAL SYMBOL FOR QUINTESSENCE..AL
   1F774..1FFFF; UNASSIGNED  # <reserved>..<reserved>
   20000..2A6D6; PVALID      # <CJK Ideograph Extension B>..<CJK Ideo
   2A6D7..2A6FF; UNASSIGNED  # <reserved>..<reserved>
   2A700..2B734; PVALID      # <CJK Ideograph Extension C>..<CJK Ideo
   2A735..2A739; UNASSIGNED  # <reserved>..<reserved>
   2A740..2B81D; PVALID      # <CJK Ideograph Extension D>..<CJK Ideo
   2F800..2FA1D; FREE_PVAL   # CJK COMP IDEO-2F800..CJK COMPA
   2FA1E..2FFFD; UNASSIGNED  # <reserved>..<reserved>
   2FFFE..2FFFF; DISALLOWED  # <noncharacter>..<noncharacter>
   30000..3FFFD; UNASSIGNED  # <reserved>..<reserved>
   3FFFE..3FFFF; DISALLOWED  # <noncharacter>..<noncharacter>
   40000..4FFFD; UNASSIGNED  # <reserved>..<reserved>
   4FFFE..4FFFF; DISALLOWED  # <noncharacter>..<noncharacter>
   50000..5FFFD; UNASSIGNED  # <reserved>..<reserved>
   5FFFE..5FFFF; DISALLOWED  # <noncharacter>..<noncharacter>
   60000..6FFFD; UNASSIGNED  # <reserved>..<reserved>
   6FFFE..6FFFF; DISALLOWED  # <noncharacter>..<noncharacter>
   70000..7FFFD; UNASSIGNED  # <reserved>..<reserved>
   7FFFE..7FFFF; DISALLOWED  # <noncharacter>..<noncharacter>
   80000..8FFFD; UNASSIGNED  # <reserved>..<reserved>
   8FFFE..8FFFF; DISALLOWED  # <noncharacter>..<noncharacter>
   90000..9FFFD; UNASSIGNED  # <reserved>..<reserved>
   9FFFE..9FFFF; DISALLOWED  # <noncharacter>..<noncharacter>
   A0000..AFFFD; UNASSIGNED  # <reserved>..<reserved>
   AFFFE..AFFFF; DISALLOWED  # <noncharacter>..<noncharacter>
   B0000..BFFFD; UNASSIGNED  # <reserved>..<reserved>
   BFFFE..BFFFF; DISALLOWED  # <noncharacter>..<noncharacter>
   C0000..CFFFD; UNASSIGNED  # <reserved>..<reserved>
   CFFFE..CFFFF; DISALLOWED  # <noncharacter>..<noncharacter>
   D0000..DFFFD; UNASSIGNED  # <reserved>..<reserved>
   DFFFE..DFFFF; DISALLOWED  # <noncharacter>..<noncharacter>
   E0000       ; UNASSIGNED  # <reserved>
   E0001       ; DISALLOWED  # LANGUAGE TAG
   E0002..E001F; UNASSIGNED  # <reserved>..<reserved>
   E0020..E007F; DISALLOWED  # TAG SPACE..CANCEL TAG
   E0080..E00FF; UNASSIGNED  # <reserved>..<reserved>
   E0100..E01EF; FREE_PVAL   # VAR SEL-17..VAR SEL-256
   E01F0..EFFFD; UNASSIGNED  # <reserved>..<reserved>
   EFFFE..10FFFF; DISALLOWED # <noncharacter>..<noncharacter>

Appendix B.  Acknowledgements

   The authors would like to acknowledge the comments and contributions
   of the following individuals: David Black, Mark Davis, Alan DeKok,
   Martin Duerst, Patrik Faltstrom, Ted Hardie, Joe Hildebrand, Paul
   Hoffman, Jeffrey Hutzelman, Simon Josefsson, John Klensin, Alexey
   Melnikov, Takahiro Nemoto, Yoav Nir, Mike Parker, Pete Resnick,
   Andrew Sullivan, Dave Thaler, and Yoshiro Yoneya.

   Some algorithms and textual descriptions have been borrowed from
   [RFC5892].  Some text regarding security has been borrowed from
   [RFC5890] and [I-D.ietf-xmpp-6122bis].

Authors' Addresses

   Peter Saint-Andre
   Cisco Systems, Inc.
   1899 Wynkoop Street, Suite 600
   Denver, CO  80202
   USA

   Phone: +1-303-308-3282
   Email: psaintan@cisco.com

   Marc Blanchet
   Viagenie
   246 Aberdeen
   Quebec, QC  G1R 2E1
   Canada

   Email: Marc.Blanchet@viagenie.ca
   URI:   http://www.viagenie.ca/