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Network Working Group                                         P. HoffmanRequest for Comments: 3454                                    IMC & VPNCCategory: Standards Track                                    M. Blanchet                                                                Viagenie                                                           December 2002Preparation of Internationalized Strings ("stringprep")Status of this Memo   This document specifies an Internet standards track protocol for the   Internet community, and requests discussion and suggestions for   improvements.  Please refer to the current edition of the "Internet   Official Protocol Standards" (STD 1) for the standardization state   and status of this protocol.  Distribution of this memo is unlimited.Copyright Notice   Copyright (C) The Internet Society (2002).  All Rights Reserved.Abstract   This document describes a framework for preparing Unicode text   strings in order to increase the likelihood that string input and   string comparison work in ways that make sense for typical users   throughout the world.  The stringprep protocol is useful for protocol   identifier values, company and personal names, internationalized   domain names, and other text strings.   This document does not specify how protocols should prepare text   strings.  Protocols must create profiles of stringprep in order to   fully specify the processing options.Table of Contents1. Introduction....................................................31.1 Terminology..................................................41.2 Using stringprep in protocols................................42. Preparation Overview............................................63. Mapping.........................................................73.1 Commonly mapped to nothing...................................73.2 Case folding.................................................84. Normalization...................................................95. Prohibited Output..............................................105.1 Space characters............................................115.2 Control characters..........................................115.3 Private use.................................................12Hoffman & Blanchet          Standards Track                     [Page 1]

RFC 3454        Preparation of Internationalized Strings   December 20025.4 Non-character code points...................................125.5 Surrogate codes.............................................135.6 Inappropriate for plain text................................135.7 Inappropriate for canonical representation..................135.8 Change display properties or deprecated.....................135.9 Tagging characters..........................................146. Bidirectional Characters.......................................147. Unassigned Code Points in Stringprep Profiles..................157.1 Categories of code points...................................167.2 Reasons for difference between stored strings and queries...177.3 Versions of applications and stored strings.................188. References.....................................................198.1 Normative references........................................198.2 Informative references......................................199. Security Considerations........................................199.1 Stringprep-specific security considerations.................199.2 Generic Unicode security considerations.....................2010. IANA Considerations...........................................2111. Acknowledgements..............................................22A. Unicode repertoires............................................23A.1 Unassigned code points in Unicode 3.2.......................23B. Mapping Tables.................................................31B.1 Commonly mapped to nothing..................................31B.2 Mapping for case-folding used with NFKC.....................32B.3 Mapping for case-folding used with no normalization.........61C. Prohibition tables.............................................78C.1 Space characters............................................78C.1.1 ASCII space characters..................................78C.1.2 Non-ASCII space characters..............................79C.2 Control characters..........................................79C.2.1 ASCII control characters................................79C.2.2 Non-ASCII control characters............................79C.3 Private use.................................................80C.4 Non-character code points...................................80C.5 Surrogate codes.............................................80C.6 Inappropriate for plain text................................80C.7 Inappropriate for canonical representation..................81C.8 Change display properties or are deprecated.................81C.9 Tagging characters..........................................81D. Bidirectional tables...........................................81D.1 Characters with bidirectional property "R" or "AL"..........81D.2 Characters with bidirectional property "L"..................82   Authors' Addresses................................................90   Full Copyright Statement..........................................91Hoffman & Blanchet          Standards Track                     [Page 2]

RFC 3454        Preparation of Internationalized Strings   December 20021. Introduction   Application programs can display text in many different ways.   Similarly, a user can enter text into an application program in a   myriad of fashions.  Internationalized text (that is, text that is   not restricted to the narrow set of US-ASCII characters) has many   input and display behaviors that make it difficult to compare text in   a consistent fashion.   This document specifies a framework of processing rules for Unicode   text.  Other protocols can create profiles of these rules; these   profiles will allow users to enter internationalized text strings in   applications and have the highest chance of getting the content of   the strings correct.  In this case, "correct" means that if two   different people enter what they think is the same string into two   different input mechanisms, the strings should match on a character-   by-character basis.   This framework does not describe how data is transcoded from other   character sets into Unicode.  In systems that uses non-Unicode   character sets, the transcoding algorithm is a critical part of   enabling secure and "correct" operation of internationalized text   strings.   In addition to helping string matching, profiles of stringprep can   also exclude characters that should not normally appear in text that   is used in the protocol.  The profile can prevent such characters by   changing the characters to be excluded to other characters, by   removing those characters, or by causing an error if the characters   would appear in the output.  For example, because the backspace   character can cause unpredictable display results, a profile can   specify that a string containing a backspace character would cause an   error.   A profile of stringprep converts a single string of input characters   to a string of output characters, or returns an error if the output   string would contain a prohibited character.  Stringprep profiles   cannot both emit a string and return an error.   Stringprep profiles cannot account for all of the variations that   might occur or that a user might expect.  In particular, a profile   will not be able to account for choice of spellings in all languages   for all scripts because the number of alternative spellings of words   and phrases is immense.  Users would probably expect all spelling   equivalents to be made equivalent, or none of them to be.  Examples   of spelling equivalents include "theater" vs. "theatre", and   "hemoglobin" vs. "h<U+00E6>moglobin" in American vs. British English.   Other examples are simplified Chinese spellings of names (forHoffman & Blanchet          Standards Track                     [Page 3]

RFC 3454        Preparation of Internationalized Strings   December 2002   example,"<U+7EDF><U+4E00><U+7801>") vs. the equivalent traditional   Chinese spelling (for example, "<U+7D71><U+4E00><U+78BC>").   Language-specific equivalences such as "Aepfel" vs. "<U+00C4>pfel",   which are sometimes considered equivalent in German, may not be   considered equivalent in other languages.1.1 Terminology   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this   document are to be interpreted as described inBCP 14,RFC 2119   [RFC2119].   Note: A glossary of terms used in Unicode and ISO/IEC 10646 can be   found in [Glossary].  Information on the 10646/Unicode character   encoding model can be found in [CharModel].   Character names in this document use the notation for code points and   names from the Unicode Standard [Unicode3.2] and ISO/IEC 10646   [ISO10646].  For example, the letter "a" may be represented as either   "U+0061" or "LATIN SMALL LETTER A".  In the lists of mappings and the   prohibited characters, the "U+" is left off to make the lists easier   to read.  The comments for character ranges are shown in square   brackets (such as "[CONTROL CHARACTERS]") and do not come from the   standards.1.2 Using stringprep in protocols   The stringprep protocol does not stand on its own; it has to be used   by other protocols at precisely-defined places in those other   protocols.  For example, a protocol that has strings that come from   the entire ISO/IEC 10646 [ISO10646] character repertoire might   specify that only strings that have been processed with a particular   profile of stringprep are legal.  Another example would be a protocol   that does string comparison as a step in the protocol; that protocol   might specify that such comparison is done only after processing the   strings with a specific profile of stringprep.   When two protocols that use different profiles of stringprep   interoperate, there may be conflict about what characters are and are   not allowed in the final string.  Thus, protocol developers should   strongly consider re-using existing profiles of stringprep.   When developers wish to allow users as wide of a range of characters   as possible in input text strings, they should, where possible, cause   stringprep to convert characters from the input string to a canonical   form instead of prohibiting them.Hoffman & Blanchet          Standards Track                     [Page 4]

RFC 3454        Preparation of Internationalized Strings   December 2002   Although it would be easy to use the stringprep process to "correct"   perceived mis-features or bugs in the current character standards,   stringprep profiles SHOULD NOT do so.   A profile of stringprep can create tables different from those in the   appendixes of this document, but it will be an exception when they   do.  The intention of stringprep is to define the tables and have the   profiles of stringprep select among those defined tables.   A profile of stringprep MUST include all of the following:   - The intended applicability of the profile   - The character repertoire that is the input and output to stringprep     (which is Unicode 3.2 for this version of stringprep)   - The mapping tables from this document used (as described insection3)   - Any additional mapping tables specific to the profile   - The Unicode normalization used, if any (as described insection 4)   - The tables from this document of characters that are prohibited as     output (as described insection 5)   - The bidirectional string testing used, if any (as described insection 6)   - Any additional characters that are prohibited as output specific to     the profile   Each profile MUST state the character repertoire on which the profile   will operate.Appendix A lists the Unicode repertoires that can be   selected.  No repertoire is ever complete, and it is expected that   characters will be added to the Unicode repertoire for the   foreseeable future.Section 7 of this document describes how to   handle characters that are assigned in later versions of the Unicode   repertories.  Subsections ofappendix A also list unassigned code   points for each repertoire.   This document is for Unicode version 3.2, and should not be   considered to automatically apply to later Unicode versions.  The   IETF, through an explicit standards action, may update this document   as appropriate to handle later Unicode versions.Hoffman & Blanchet          Standards Track                     [Page 5]

RFC 3454        Preparation of Internationalized Strings   December 2002   This document lists the unassigned code points in the range 0 to   10FFFF for Unicode 3.2 inappendix A.  The list inappendix A MUST be   used by implementations of this specification.  If there are any   discrepancies between the list inappendix A and the Unicode 3.2   specification, the list inappendix A always takes precedence.   Each profile of stringprep MUST be registered with IANA.  The   registration procedure is described in the IANA Considerations   appendix; basically, the IESG must review each profile of stringprep.   Protocol developers are strongly encouraged to look through the IANA   profile registry when creating new profiles for stringprep, and to   re-use logic from earlier profiles where possible in new profiles.   In some cases, an existing profile can be reused by a different   protocol.2. Preparation Overview   The steps for preparing strings are:   1) Map -- For each character in the input, check if it has a mapping      and, if so, replace it with its mapping.  This is described insection 3.   2) Normalize -- Possibly normalize the result of step 1 using Unicode      normalization.  This is described insection 4.   3) Prohibit -- Check for any characters that are not allowed in the      output.  If any are found, return an error.  This is described insection 5.   4) Check bidi -- Possibly check for right-to-left characters, and if      any are found, make sure that the whole string satisfies the      requirements for bidirectional strings.  If the string does not      satisfy the requirements for bidirectional strings, return an      error.  This is described insection 6.   The above steps MUST be performed in the order given to comply with   this specification.   The mappings described insection 3, and the optional Unicode   normalization described insection 4, can be one-to-none, one-to-one,   one-to-many, many-to-one, or many-to-many.  That is, some characters   might be eliminated or replaced by more than one character, and the   output of this step might be shorter or longer than the input.   Because of this, the system using stringprep MUST be prepared to   receive a longer or shorter string than the one input in the   stringprep algorithm.Hoffman & Blanchet          Standards Track                     [Page 6]

RFC 3454        Preparation of Internationalized Strings   December 20023. Mapping   Each character in the input stream MUST be checked against a mapping   table.  The mapping table SHOULD come from this document, although   the mapping table MAY be added to or altered by the profile.  The   mapping tables are subsections ofappendix B.   The lists inappendix B MUST be used by implementations of this   specification.  If there are any discrepancies between the lists inappendix B and subsections below, the lists inappendix B always   takes precedence.   For any individual character, the mapping table MAY specify that a   character be mapped to nothing, or mapped to one other character, or   mapped to a string of other characters.   Mapped characters are not re-scanned during the mapping step.  That   is, if character A at position X is mapped to character B, character   B which is now at position X is not checked against the mapping   table.3.1 Commonly mapped to nothing   The following characters are simply deleted from the input (that is,   they are mapped to nothing) because their presence or absence in   protocol identifiers should not make two strings different.  They are   listed in Table B.1.   Some characters are only useful in line-based text, and are otherwise   invisible and ignored.   00AD; SOFT HYPHEN   1806; MONGOLIAN TODO SOFT HYPHEN   200B; ZERO WIDTH SPACE   2060; WORD JOINER   FEFF; ZERO WIDTH NO-BREAK SPACE   Some characters affect glyph choice and glyph placement, but do not   bear semantics.   034F; COMBINING GRAPHEME JOINER   180B; MONGOLIAN FREE VARIATION SELECTOR ONE   180C; MONGOLIAN FREE VARIATION SELECTOR TWO   180D; MONGOLIAN FREE VARIATION SELECTOR THREE   200C; ZERO WIDTH NON-JOINER   200D; ZERO WIDTH JOINER   FE00; VARIATION SELECTOR-1   FE01; VARIATION SELECTOR-2Hoffman & Blanchet          Standards Track                     [Page 7]

RFC 3454        Preparation of Internationalized Strings   December 2002   FE02; VARIATION SELECTOR-3   FE03; VARIATION SELECTOR-4   FE04; VARIATION SELECTOR-5   FE05; VARIATION SELECTOR-6   FE06; VARIATION SELECTOR-7   FE07; VARIATION SELECTOR-8   FE08; VARIATION SELECTOR-9   FE09; VARIATION SELECTOR-10   FE0A; VARIATION SELECTOR-11   FE0B; VARIATION SELECTOR-12   FE0C; VARIATION SELECTOR-13   FE0D; VARIATION SELECTOR-14   FE0E; VARIATION SELECTOR-15   FE0F; VARIATION SELECTOR-163.2 Case folding   If a profile is going to map characters for case-insensitive   comparison, that profile SHOULD map using eitherappendix B.2 orappendix B.3.appendix B.2 is for profiles that also use Unicode   normalization form KC, while appendix  B.3 is for profiles that do   not use Unicode normalization.  These tables map from uppercase to   lowercase characters.  Note that this could have been "change all   lowercase characters into uppercase characters".  However, the   upper-to-lower folding was chosen because there is a tradition of   using lowercase in current Internet applications and protocols.   If a profile creates its own mapping tables for case folding, they   SHOULD be based on [UTR21], and SHOULD map from uppercase characters   to lowercase.  The "CaseFolding.txt" file from the Unicode database   SHOULD be used to prepare the mapping table. The profile SHOULD do   full case mapping (that is, using statuses C, F, and I).   If the profile is using Unicode normalization form KC (as described   insection 4 of this document), it is important to note that there   are some characters that do not have mappings in [UTR21] but still   need processing.  These characters include a few Greek characters and   many symbols that contain Latin characters.  The list of characters   to add to the mapping table can determined by the following   algorithm:   b = NormalizeWithKC(Fold(a));   c = NormalizeWithKC(Fold(b));   if c is not the same as b, add a mapping for "a to c".   Because NormalizeWithKC(Fold(c)) always equals c, the table is stable   from that point on.Hoffman & Blanchet          Standards Track                     [Page 8]

RFC 3454        Preparation of Internationalized Strings   December 2002Appendix B.3 is derived from the CaseFolding-3.txt file associated   with Unicode 3.2;appendix B.2 is based onappendix B.3 with the   additional characters added from the algorithm above.   Authors of profiles of this document need to consider the effects of   changing the mapping of any currently-assigned character when   updating their profiles.  Adding a new mapping for a currently-   assigned character, or changing an existing mapping, could cause a   variance between the behavior of systems that have been updated and   systems that have not been updated.4. Normalization   The output of the mapping step is optionally normalized using one of   the Unicode normalization forms, as described in [UAX15].  A profile   can specify one of two options for Unicode normalization:   - no normalization   - Unicode normalization with form KC   A profile MAY choose to do no normalization.  However, such a profile   can easily yield results that will be surprising to typical users,   depending on the input mechanism they use.  For example, some input   mechanisms enter compatibility characters that look exactly like the   underlying characters, but have different code points.  Another   example of where Unicode normalization helps create predictable   results is with characters that have multiple combining diacritics:   normalization orders those diacritics in a predictable fashion.   On the other hand, Unicode normalization requires fairly large tables   and somewhat complicated character reordering logic.  The size and   complexity should not be considered daunting except in the most   restricted of environments, and needs to be weighed against the   problems of user surprise from comparing unnormalized strings.  Note   that the tables used for normalization are not given in this   document, but instead must be derived from the Unicode database, as   described in [UAX15].   There is a third form of normalization, Unicode normalization with   form C.  If a profile is going to use a Unicode normalization, it   MUST use Unicode normalization form KC.  Form KC maps many   "compatibility characters" to their equivalents.  Some user interface   systems make it possible to enter compatibility characters instead of   the base equivalents.  Thus, using form KC instead of form C will   cause more strings that users would expect to match to actually   match.Hoffman & Blanchet          Standards Track                     [Page 9]

RFC 3454        Preparation of Internationalized Strings   December 2002   A profile that specifies Unicode normalization MUST use the   normalization in [UAX15] that is associated with the version of the   Unicode character set specified for the profile.   The composition process described in [UAX15] requires a fixed   composition version of Unicode to ensure that strings normalized   under one version of Unicode remain normalized under all future   versions of Unicode.   The IETF is relying on Unicode not to change the normalization of   currently-assigned characters in future versions of normalization.   If a future version of the normalization tables changes the   normalized value of an existing character, authors of profiles of   this document have to look at the changes very carefully before they   update their normalization tables.  Such a change could cause a   variance between the behavior of systems that have been updated and   systems that have not been updated.5. Prohibited Output   Before the text can be emitted, it MUST be checked for prohibited   code points.  There are a variety of prohibited code points, as   described in this section.  A profile of this document MAY use all or   some of the tables inappendix C.   The stringprep process never emits both an error and a string.  If an   error is detected during the checking for prohibited code points,   only an error is returned.   Note that the subsections below describe how the tables inappendix C   were formed.  They are here for people who want to understand more,   but they should be ignored by implementors.  Implementations that use   tables MUST map based on the tables themselves, not based on the   descriptions in this section of how the tables were created.   The lists inappendix C MUST be used by implementations of this   specification.  If there are any discrepancies between the lists inappendix C and subsections below, the lists inappendix C always take   precedence.   Some code points listed in one section may also appear in other   sections.   It is important to note that a profile of this document MAY prohibit   additional characters.Hoffman & Blanchet          Standards Track                    [Page 10]

RFC 3454        Preparation of Internationalized Strings   December 2002   Each subsection of this section has a matching subsection inappendixC.  For example, the characters listed insection 5.1 are listed inappendix C.1.5.1 Space characters   Space characters can make accurate visual transcription of strings   nearly impossible and could lead to user entry errors in many ways.   Note that the list below is split into two tables inappendix C:   Table C.1.1 contains the ASCII code points, while Table C.1.2   contains the non-ASCII code points.  Most profiles of this document   that want to prohibit space characters will want to include both   tables.   0020; SPACE   00A0; NO-BREAK SPACE   1680; OGHAM SPACE MARK   2000; EN QUAD   2001; EM QUAD   2002; EN SPACE   2003; EM SPACE   2004; THREE-PER-EM SPACE   2005; FOUR-PER-EM SPACE   2006; SIX-PER-EM SPACE   2007; FIGURE SPACE   2008; PUNCTUATION SPACE   2009; THIN SPACE   200A; HAIR SPACE   200B; ZERO WIDTH SPACE   202F; NARROW NO-BREAK SPACE   205F; MEDIUM MATHEMATICAL SPACE   3000; IDEOGRAPHIC SPACE5.2 Control characters   Control characters (or characters with control function) cannot be   seen and can cause unpredictable results when displayed.  Note that   the list below is split into two tables inappendix C: Table C.2.1   contains the ASCII code points, while Table C.2.2 contains the non-   ASCII code points.  Most profiles of this document that want to   prohibit control characters will want to include both tables.   0000-001F; [CONTROL CHARACTERS]   007F; DELETE   0080-009F; [CONTROL CHARACTERS]   06DD; ARABIC END OF AYAH   070F; SYRIAC ABBREVIATION MARK   180E; MONGOLIAN VOWEL SEPARATORHoffman & Blanchet          Standards Track                    [Page 11]

RFC 3454        Preparation of Internationalized Strings   December 2002   200C; ZERO WIDTH NON-JOINER   200D; ZERO WIDTH JOINER   2028; LINE SEPARATOR   2029; PARAGRAPH SEPARATOR   2060; WORD JOINER   2061; FUNCTION APPLICATION   2062; INVISIBLE TIMES   2063; INVISIBLE SEPARATOR   206A-206F; [CONTROL CHARACTERS]   FEFF; ZERO WIDTH NO-BREAK SPACE   FFF9-FFFC; [CONTROL CHARACTERS]   1D173-1D17A; [MUSICAL CONTROL CHARACTERS]5.3 Private use   Because private-use characters do not have defined meanings, they are   likely to be prohibited.  The private-use characters are:   E000-F8FF; [PRIVATE USE, PLANE 0]   F0000-FFFFD; [PRIVATE USE, PLANE 15]   100000-10FFFD; [PRIVATE USE, PLANE 16]5.4 Non-character code points   Non-character code points are code points that have been allocated in   ISO/IEC 10646 but are not characters.  Because they are already   assigned, they are guaranteed not to later change into characters.   FDD0-FDEF; [NONCHARACTER CODE POINTS]   FFFE-FFFF; [NONCHARACTER CODE POINTS]   1FFFE-1FFFF; [NONCHARACTER CODE POINTS]   2FFFE-2FFFF; [NONCHARACTER CODE POINTS]   3FFFE-3FFFF; [NONCHARACTER CODE POINTS]   4FFFE-4FFFF; [NONCHARACTER CODE POINTS]   5FFFE-5FFFF; [NONCHARACTER CODE POINTS]   6FFFE-6FFFF; [NONCHARACTER CODE POINTS]   7FFFE-7FFFF; [NONCHARACTER CODE POINTS]   8FFFE-8FFFF; [NONCHARACTER CODE POINTS]   9FFFE-9FFFF; [NONCHARACTER CODE POINTS]   AFFFE-AFFFF; [NONCHARACTER CODE POINTS]   BFFFE-BFFFF; [NONCHARACTER CODE POINTS]   CFFFE-CFFFF; [NONCHARACTER CODE POINTS]   DFFFE-DFFFF; [NONCHARACTER CODE POINTS]   EFFFE-EFFFF; [NONCHARACTER CODE POINTS]   FFFFE-FFFFF; [NONCHARACTER CODE POINTS]   10FFFE-10FFFF; [NONCHARACTER CODE POINTS]Hoffman & Blanchet          Standards Track                    [Page 12]

RFC 3454        Preparation of Internationalized Strings   December 2002   The non-character code points are listed in the PropList.txt file   from the Unicode database.5.5 Surrogate codes   The following code points are permanently reserved for use as   surrogate code values in the UTF-16 encoding, will never be assigned   to characters in the Unicode repertoire, and are therefore   prohibited:   D800-DFFF; [SURROGATE CODES]5.6 Inappropriate for plain text   The following characters do not appear in regular text.   FFF9; INTERLINEAR ANNOTATION ANCHOR   FFFA; INTERLINEAR ANNOTATION SEPARATOR   FFFB; INTERLINEAR ANNOTATION TERMINATOR   FFFC; OBJECT REPLACEMENT CHARACTER   Although the replacement character (U+FFFD) might be used when a   string is displayed,  it doesn't make sense for it to be part of the   string itself.  It is often displayed by renderers to indicate "there   would be some character here, but it cannot be rendered".  For   example, on a computer with no Asian fonts, a string with three   ideographs might be rendered with three replacement characters.   FFFD; REPLACEMENT CHARACTER5.7 Inappropriate for canonical representation   The ideographic description characters allow different sequences of   characters to be rendered the same way, which makes them   inappropriate for strings that have to have a single canonical   representation.   2FF0-2FFB; [IDEOGRAPHIC DESCRIPTION CHARACTERS]5.8 Change display properties or are deprecated   The following characters can cause changes in display or the order in   which characters appear when rendered, or are deprecated in Unicode.   0340; COMBINING GRAVE TONE MARK   0341; COMBINING ACUTE TONE MARK   200E; LEFT-TO-RIGHT MARK   200F; RIGHT-TO-LEFT MARKHoffman & Blanchet          Standards Track                    [Page 13]

RFC 3454        Preparation of Internationalized Strings   December 2002   202A; LEFT-TO-RIGHT EMBEDDING   202B; RIGHT-TO-LEFT EMBEDDING   202C; POP DIRECTIONAL FORMATTING   202D; LEFT-TO-RIGHT OVERRIDE   202E; RIGHT-TO-LEFT OVERRIDE   206A; INHIBIT SYMMETRIC SWAPPING   206B; ACTIVATE SYMMETRIC SWAPPING   206C; INHIBIT ARABIC FORM SHAPING   206D; ACTIVATE ARABIC FORM SHAPING   206E; NATIONAL DIGIT SHAPES   206F; NOMINAL DIGIT SHAPES5.9 Tagging characters   The following characters are used for tagging text and are invisible.   E0001; LANGUAGE TAG   E0020-E007F; [TAGGING CHARACTERS]6. Bidirectional Characters   Most characters are displayed from left to right, but some are   displayed from right to left.  This feature of Unicode is called   "bidirectional text", or "bidi" for short.  The Unicode standard has   an extensive discussion of how to reorder glyphs for display when   dealing with bidirectional text such as Arabic or Hebrew.  See [UAX9]   for more information.  In particular, all Unicode text is stored in   logical order.   A profile MAY choose to ignore bidirectional text.  However, ignoring   bidirectional text can cause display ambiguities.  For example, it is   quite easy to create two different strings with the same characters   (but in different order) that are correctly displayed identically.   Therefore, in order to avoid most problems with ambiguous   bidirectional text display, profile creators should strongly consider   including the bidirectional character handling described in this   section in their profile.   The stringprep process never emits both an error and a string.  If an   error is detected during the checking of bidirectional strings, only   an error is returned.   [Unicode3.2] defines several bidirectional categories; each character   has one bidirectional category assigned to it.  For the purposes of   the requirements below, an "RandALCat character" is a character that   has Unicode bidirectional categories "R" or "AL"; an "LCat character"   is a character that has Unicode bidirectional category "L".  NoteHoffman & Blanchet          Standards Track                    [Page 14]

RFC 3454        Preparation of Internationalized Strings   December 2002   that there are many characters which fall in neither of the above   definitions; Latin digits (<U+0030> through <U+0039>) are examples of   this because they have bidirectional category "EN".   In any profile that specifies bidirectional character handling, all   three of the following requirements MUST be met:   1) The characters insection 5.8 MUST be prohibited.   2) If a string contains any RandALCat character, the string MUST NOT      contain any LCat character.   3) If a string contains any RandALCat character, a RandALCat      character MUST be the first character of the string, and a      RandALCat character MUST be the last character of the string.   Note that requirement 3 prohibits strings such as <U+0627><U+0031>   ("aleph 1") but allows strings such as <U+0627><U+0031><U+0628>   ("aleph 1 beh").  [UAX9] goes into great detail about the display   order of strings that contain particular categories of characters in   particular sequences.   Table D.1 lists the characters that belong to Unicode bidirectional   categories "R" and "AL".  Table D.2 lists all the characters that   belong to Unicode bidirectonal category "L".  These tables are   derived from [Unicode3.2].7. Unassigned Code Points in Stringprep Profiles   This section describes two different types of strings in typical   protocols where internationalized strings are used: "stored strings"   and "queries".  Of course, different Internet protocols use strings   very differently, so these terms cannot be used exactly in every   protocol that needs to use stringprep.  In general, "stored strings"   are strings that are used in protocol identifiers and named entities,   such as names in digital certificates and DNS domain name parts.   "Queries" are strings that are used to match against strings that are   stored identifiers, such as user-entered names for digital   certificate authorities and DNS lookups.   All code points not assigned in the character repertoire named in a   stringprep profile are called "unassigned code points".  Stored   strings using the profile MUST NOT contain any unassigned code   points.  Queries for matching strings MAY contain unassigned code   points.  Note that this is the only part of this document where the   requirements for queries differs from the requirements for stored   strings.Hoffman & Blanchet          Standards Track                    [Page 15]

RFC 3454        Preparation of Internationalized Strings   December 2002   Using two different policies for where unassigned code points can   appear removes the need for versioning in protocols that use   stringprep profiles.  This is very useful since it makes the overall   processing simpler and does not impose a "protocol" to handle   versioning.  It is expected that the ISO/IEC 10646 and Unicode   repertoires will be updated fairly frequently; at the time that this   document is being written, it has happened approximately once a year.   Each time a new version of a repertoire appears, a new version of a   profile MAY be created.  Some end users will want to use the new code   points as soon as they are defined.   The list of unassigned code points MUST be given in a profile, and   that list MUST be used by implementations of the profile.   The goal of the requirements in this section is to prevent   comparisons between two strings that were both permitted to contain   unassigned code points.  When two strings X and Y are compared and   string Y was prepared in a way that permits unassigned code points, a   negative result to the comparison is not definitive; it's possible   that the strings don't match even though they would match if a more   recent version of the profile were used for Y.  However, if both X   and Y were prepared in a way that permits unassigned code points,   something worse can happen: even a positive result for the comparison   is not definitive.  It is possible that the strings do match even   though they would not match if a more recent version of the profile   were used (one that prohibits a code point appearing in both X and   Y).   Due to the way that versioning is handled in this section, stored   strings that are embedded in structures that cannot be changed (such   as the signed parts of digital certificates) MUST NOT contain any   unassigned code points.7.1 Categories of code points   Each code point in a repertoire named by a profile of stringprep can   be categorized by how it acts in the process described in earlier   sections of this document:      AO      Code points that can be in the output      MN      Code points that cannot be in the output because they              never appear as output from mapping or normalization      D       Code points that cannot be in the output because they are              disallowed in the prohibition step      U       Unassigned code pointsHoffman & Blanchet          Standards Track                    [Page 16]

RFC 3454        Preparation of Internationalized Strings   December 2002   A subsequent version of a profile that references a newer version of   a repertoire with new code points will inherently have some code   points move from category U to either D, MN, or AO.  For backwards   compatibility, a subsequent version of a profile MUST NOT move code   points from any other category.  That is, current AO, MN, or D code   points MUST NOT ever change to a different category.   Stored strings MUST NOT contain any code points outside of AO for the   latest version of a profile.  That is, they are forbidden to contain   code points from the MN, D, or U categories.   Applications creating queries MUST treat U code points as if they   were AO when preparing the query to be entered in the process   described by a profile of stringprep.  Those applications MAY   optionally have a preprocessor that provide stricter checks: treating   unassigned code points in the input as errors, or warning the user   about the fact that the code point is unassigned in the version of a   profile that the software is based on; such a choice is a local   matter for the software.7.2 Reasons for the difference between stored strings and queries   Different software using different versions of a stringprep profile   need to interoperate with maximal compatibility.  The scheme   described in this section (stored strings MUST NOT contain unassigned   code points, queries MAY include unassigned code points) allows that   compatibility without introducing any known security or   interoperability issues.   The list below shows what happens if a query contains a code point   from category U that is allowed in a newer version of a profile.  The   query either matches the string that was intended, or matches no   string at all.  In this list, the query comes from an application   using version "oldVersion" of a profile, the stored string was   created using version "newVersion" of the same profile, and the code   point X was in category U in oldVersion, and has changed category to   AO, MN, or D.  There are 3 possible scenarios:   1. X is assigned to AO -- In newVersion, X is in category AO.      Because the application passed X through, it gets back a positive      match with the stored string.  There is one exceptional case,      where X is a combining mark.      The order of combining marks is normalized, so if another      combining mark Y has a lower combining class than X then XY will      be put in the canonical order YX.  (Unassigned code points are      never reordered, so this doesn't happen in oldVersion).  If the      query contains YX, the query will get positive match with theHoffman & Blanchet          Standards Track                    [Page 17]

RFC 3454        Preparation of Internationalized Strings   December 2002      stored string.  However, no string can be stored with XY, so a      query with XY will get a negative answer to the test for matching.   2. X is assigned to MN -- In newVersion, X is normalized to code      point "nX" and therefore X is now put in category MN.  This cannot      exist in any stored string, so any query containing X will get a      negative answer to the test for matching.  Note, however, if the      query had contained the letter nX, it would have positively      matched.   3. X is assigned to D -- In newVersion, X is in category D.  This      cannot exist in any stored string, so any query containing X will      get a negative answer to the test for matching.   In none of the cases does the query get data for a stored string   other than the one it actually tried to match against.   Profiles are stable between versions in the following sense: If a   string S has been prepared using newVersion, then it will not change   if it is subsequently prepared using oldVersion.7.3 Versions of applications and stored strings   Another way to see that this versioning system works is to compare   what happens when an application uses a newer or older version of a   profile.   Newer query application -- Suppose that a querying application is   using version newVersion and the stored string was created using   version oldVersion.  This case is simple: there will be no characters   in the stored string that cannot be queried by the application   because the new profile uses a superset of the code points used for   making the stored string.   Newer stored string -- Suppose that a querying application is using   oldVersion and the stored string was created using a profile that   uses newVersion.  Because the querying application let unassigned   code points pass through, the user can query on stored strings that   use code points in newVersion.  No stored strings can have code   points that are unassigned in newVersion, since that is illegal.  In   order to get a match, the querying application has to enter the   unassigned code points in the proper order, and has to use unassigned   code points that would make it through both the mapping and the   normalization steps.Hoffman & Blanchet          Standards Track                    [Page 18]

RFC 3454        Preparation of Internationalized Strings   December 20028. References8.1 Normative references   [UAX15]      Mark Davis and Martin Duerst. Unicode Standard Annex                #15:  Unicode Normalization Forms, Version 3.2.0.                <http://www.unicode.org/unicode/reports/tr15/tr15-22.html>.   [Unicode3.2] The Unicode Consortium. The Unicode Standard, Version                3.2.0 is defined by The Unicode Standard, Version 3.0                (Reading, MA, Addison-Wesley, 2000. ISBN 0-201-61633-5),                as amended by the Unicode Standard Annex #27: Unicode                3.1 (http://www.unicode.org/reports/tr27/) and by the                Unicode Standard Annex #28: Unicode 3.2                (http://www.unicode.org/reports/tr28/).   [RFC2119]    Bradner, S., "Key words for use in RFCs to Indicate                Requirement Levels",BCP 14,RFC 2119, March 1997.8.2 Informative references   [CharModel]  Unicode Technical Report;17, Character Encoding Model.                <http://www.unicode.org/unicode/reports/tr17/>.   [Glossary]   Unicode Glossary, <http://www.unicode.org/glossary/>.   [ISO10646]   ISO/IEC, "Information Technology - Universal Multiple-                Octet Coded Character Set (UCS) - Part 1: Architecture                and Basic Multilingual Plane", ISO/IEC 10646-1:2000,                October 2000.   [RFC2434]    Narten, T. and H. Alvestrand, "Guidelines for IANA                Considerations",BCP 26,RFC 2434, October 1998.   [UAX9]       The Unicode Consortium. Unicode Standard Annex #9, The                Bidirectional Algorithm,                <http://www.unicode.org/unicode/reports/tr9/>.   [UTR21]      Mark Davis. Case Mappings. Unicode Technical Report 21.                <http://www.unicode.org/unicode/reports/tr21/>.9. Security Considerations   Stringprep is used with Unicode characters.  There are security   considerations that are specific to stringprep, and others that are   generic to using Unicode.Hoffman & Blanchet          Standards Track                    [Page 19]

RFC 3454        Preparation of Internationalized Strings   December 20029.1 Stringprep-specific security considerations   The Unicode and ISO/IEC 10646 repertoires have many characters that   look similar.  In many cases, users of security protocols might do   visual matching, such as when comparing the names of trusted third   parties.  Because it is impossible to map similar-looking characters   without a great deal of context such as knowing the fonts used,   stringprep does nothing to map similar-looking characters together   nor to prohibit some characters because they look like others.  User   applications can help disambiguate some similar-looking characters by   showing the user when a string changes between scripts.   Most profiles of stringprep can cause changes in strings that are   input to stringprep.  Because of this, protocols that have sets of   non-allowed characters or sequences MUST check for the non-allowed   characters or sequences after the stringprep processing.   This document does not mandate the checking of bidirectional   characters insection 6.  If the requirements insection 6 are not   used in a profile of stringprep, it is easy to create many strings   whose characters are in different order but are displayed   identically.  This can cause security-related user confusion similar   to look-alike characters, as described above.   Stringprep does not do anything to assure that any algorithms   translating characters from non-Unicode into Unicode produce the same   output in all implementations.   Some Unicode codepoints are invisible.  Protocols that allow these   characters (that is, do not map them out or prohibit them in   stringprep) can cause users confusion when two identical-looking   strings do not match.9.2 Generic Unicode security considerations   Using Unicode characters explicitly forces applications to use   multi-octet characters.  Converting an application from one that uses   single-octet characters to one that uses multi-octet characters must   be done very carefully, particularly in an application that checks   for values of characters or sorts characters.   Protocols that use stringprep usually also use encodings of Unicode,   such as UTF-8 or UTF-16.  Some applications using those encodings   have been known to not check for illegal or ill-formed sequences in   the encodings, and thereby have not detected sequences of octets that   would have been detected if they used just ASCII.  For example, inHoffman & Blanchet          Standards Track                    [Page 20]

RFC 3454        Preparation of Internationalized Strings   December 2002   UTF-8 the octet sequence "0xC0 0xAB" is an illegal formation of   U+002B (plus sign).  All programs should reject any string that is an   illegal or ill-formed octet sequence for the encoding being used.   Both Unicode normalization and conversion between Unicode encodings   can cause strings to grow or shrink.  Programs that used fixed-size   buffers, or that make assumptions that buffers will always be greater   than or less than particular sizes, are likely to fail in insecure   fashions when using Unicode normalization or encoding conversions.   Covering an extensive list of security threats and considerations on   the use of current and future versions of Unicode is outside of the   scope of this document.10. IANA Considerations   Stringprep profiles MUST have IETF consensus as described in   [RFC2434].  Each profile MUST be reviewed by the IESG before it is   registered.  The IESG MAY change a profile before registration.   IANA has set up a registry of stringprep profiles.  This registry is   a single text file that lists the known profiles.  Each entry in the   registry has three fields:   - Profile name   - RFC in which the profile is defined   - Indicator whether or not this is the newest version of the profile   Each version of a profile will remain listed in the registry forever.   That is, if a new version of a profile supersedes an earlier version,   both versions will continue to be listed in the registry, but the   current version indicator will be turned off for the earlier version   and turned on for the newer version.   It is probably harmful if a large number of profiles of stringprep   proliferate.  Therefore, the IESG may reject proposals for new   profiles and instead suggest that protocols reuse existing profiles.Hoffman & Blanchet          Standards Track                    [Page 21]

RFC 3454        Preparation of Internationalized Strings   December 200211. Acknowledgements   Many people from the IETF IDN Working Group and the Unicode Technical   Committee contributed ideas that went into the first document of this   document.  Mark Davis and Patrik Faltstrom were particularly helpful   in some of the ideas, such as the versioning description.   The IDN nameprep design team made many useful changes to the first   document.  That team and its advisors include:   Asmus Freytag   Cathy Wissink   Francois Yergeau   James Seng   Marc Blanchet   Mark Davis   Martin Duerst   Patrik Faltstrom   Paul Hoffman   Additional significant improvements were proposed by:   Jonathan Rosenne   Kent Karlsson   Scott Hollenbeck   Dave Crocker   Erik Nordmark   Matitiahu AlloucheHoffman & Blanchet          Standards Track                    [Page 22]

RFC 3454        Preparation of Internationalized Strings   December 2002A. Unicode repertoires   The following is the only repertoire covered in this document:   Unicode 3.2, as defined in [Unicode3.2].A.1 Unassigned code points in Unicode 3.2   ----- Start Table A.1 -----   0221   0234-024F   02AE-02AF   02EF-02FF   0350-035F   0370-0373   0376-0379   037B-037D   037F-0383   038B   038D   03A2   03CF   03F7-03FF   0487   04CF   04F6-04F7   04FA-04FF   0510-0530   0557-0558   0560   0588   058B-0590   05A2   05BA   05C5-05CF   05EB-05EF   05F5-060B   060D-061A   061C-061E   0620   063B-063F   0656-065F   06EE-06EF   06FF   070E   072D-072F   074B-077F   07B2-0900Hoffman & Blanchet          Standards Track                    [Page 23]

RFC 3454        Preparation of Internationalized Strings   December 2002   0904   093A-093B   094E-094F   0955-0957   0971-0980   0984   098D-098E   0991-0992   09A9   09B1   09B3-09B5   09BA-09BB   09BD   09C5-09C6   09C9-09CA   09CE-09D6   09D8-09DB   09DE   09E4-09E5   09FB-0A01   0A03-0A04   0A0B-0A0E   0A11-0A12   0A29   0A31   0A34   0A37   0A3A-0A3B   0A3D   0A43-0A46   0A49-0A4A   0A4E-0A58   0A5D   0A5F-0A65   0A75-0A80   0A84   0A8C   0A8E   0A92   0AA9   0AB1   0AB4   0ABA-0ABB   0AC6   0ACA   0ACE-0ACF   0AD1-0ADF   0AE1-0AE5Hoffman & Blanchet          Standards Track                    [Page 24]

RFC 3454        Preparation of Internationalized Strings   December 2002   0AF0-0B00   0B04   0B0D-0B0E   0B11-0B12   0B29   0B31   0B34-0B35   0B3A-0B3B   0B44-0B46   0B49-0B4A   0B4E-0B55   0B58-0B5B   0B5E   0B62-0B65   0B71-0B81   0B84   0B8B-0B8D   0B91   0B96-0B98   0B9B   0B9D   0BA0-0BA2   0BA5-0BA7   0BAB-0BAD   0BB6   0BBA-0BBD   0BC3-0BC5   0BC9   0BCE-0BD6   0BD8-0BE6   0BF3-0C00   0C04   0C0D   0C11   0C29   0C34   0C3A-0C3D   0C45   0C49   0C4E-0C54   0C57-0C5F   0C62-0C65   0C70-0C81   0C84   0C8D   0C91   0CA9   0CB4Hoffman & Blanchet          Standards Track                    [Page 25]

RFC 3454        Preparation of Internationalized Strings   December 2002   0CBA-0CBD   0CC5   0CC9   0CCE-0CD4   0CD7-0CDD   0CDF   0CE2-0CE5   0CF0-0D01   0D04   0D0D   0D11   0D29   0D3A-0D3D   0D44-0D45   0D49   0D4E-0D56   0D58-0D5F   0D62-0D65   0D70-0D81   0D84   0D97-0D99   0DB2   0DBC   0DBE-0DBF   0DC7-0DC9   0DCB-0DCE   0DD5   0DD7   0DE0-0DF1   0DF5-0E00   0E3B-0E3E   0E5C-0E80   0E83   0E85-0E86   0E89   0E8B-0E8C   0E8E-0E93   0E98   0EA0   0EA4   0EA6   0EA8-0EA9   0EAC   0EBA   0EBE-0EBF   0EC5   0EC7   0ECE-0ECFHoffman & Blanchet          Standards Track                    [Page 26]

RFC 3454        Preparation of Internationalized Strings   December 2002   0EDA-0EDB   0EDE-0EFF   0F48   0F6B-0F70   0F8C-0F8F   0F98   0FBD   0FCD-0FCE   0FD0-0FFF   1022   1028   102B   1033-1035   103A-103F   105A-109F   10C6-10CF   10F9-10FA   10FC-10FF   115A-115E   11A3-11A7   11FA-11FF   1207   1247   1249   124E-124F   1257   1259   125E-125F   1287   1289   128E-128F   12AF   12B1   12B6-12B7   12BF   12C1   12C6-12C7   12CF   12D7   12EF   130F   1311   1316-1317   131F   1347   135B-1360   137D-139F   13F5-1400Hoffman & Blanchet          Standards Track                    [Page 27]

RFC 3454        Preparation of Internationalized Strings   December 2002   1677-167F   169D-169F   16F1-16FF   170D   1715-171F   1737-173F   1754-175F   176D   1771   1774-177F   17DD-17DF   17EA-17FF   180F   181A-181F   1878-187F   18AA-1DFF   1E9C-1E9F   1EFA-1EFF   1F16-1F17   1F1E-1F1F   1F46-1F47   1F4E-1F4F   1F58   1F5A   1F5C   1F5E   1F7E-1F7F   1FB5   1FC5   1FD4-1FD5   1FDC   1FF0-1FF1   1FF5   1FFF   2053-2056   2058-205E   2064-2069   2072-2073   208F-209F   20B2-20CF   20EB-20FF   213B-213C   214C-2152   2184-218F   23CF-23FF   2427-243F   244B-245F   24FFHoffman & Blanchet          Standards Track                    [Page 28]

RFC 3454        Preparation of Internationalized Strings   December 2002   2614-2615   2618   267E-267F   268A-2700   2705   270A-270B   2728   274C   274E   2753-2755   2757   275F-2760   2795-2797   27B0   27BF-27CF   27EC-27EF   2B00-2E7F   2E9A   2EF4-2EFF   2FD6-2FEF   2FFC-2FFF   3040   3097-3098   3100-3104   312D-3130   318F   31B8-31EF   321D-321F   3244-3250   327C-327E   32CC-32CF   32FF   3377-337A   33DE-33DF   33FF   4DB6-4DFF   9FA6-9FFF   A48D-A48F   A4C7-ABFF   D7A4-D7FF   FA2E-FA2F   FA6B-FAFF   FB07-FB12   FB18-FB1C   FB37   FB3D   FB3F   FB42Hoffman & Blanchet          Standards Track                    [Page 29]

RFC 3454        Preparation of Internationalized Strings   December 2002   FB45   FBB2-FBD2   FD40-FD4F   FD90-FD91   FDC8-FDCF   FDFD-FDFF   FE10-FE1F   FE24-FE2F   FE47-FE48   FE53   FE67   FE6C-FE6F   FE75   FEFD-FEFE   FF00   FFBF-FFC1   FFC8-FFC9   FFD0-FFD1   FFD8-FFD9   FFDD-FFDF   FFE7   FFEF-FFF8   10000-102FF   1031F   10324-1032F   1034B-103FF   10426-10427   1044E-1CFFF   1D0F6-1D0FF   1D127-1D129   1D1DE-1D3FF   1D455   1D49D   1D4A0-1D4A1   1D4A3-1D4A4   1D4A7-1D4A8   1D4AD   1D4BA   1D4BC   1D4C1   1D4C4   1D506   1D50B-1D50C   1D515   1D51D   1D53A   1D53F   1D545Hoffman & Blanchet          Standards Track                    [Page 30]

RFC 3454        Preparation of Internationalized Strings   December 2002   1D547-1D549   1D551   1D6A4-1D6A7   1D7CA-1D7CD   1D800-1FFFD   2A6D7-2F7FF   2FA1E-2FFFD   30000-3FFFD   40000-4FFFD   50000-5FFFD   60000-6FFFD   70000-7FFFD   80000-8FFFD   90000-9FFFD   A0000-AFFFD   B0000-BFFFD   C0000-CFFFD   D0000-DFFFD   E0000   E0002-E001F   E0080-EFFFD   ----- End Table A.1 -----B. Mapping Tables   The following is the mapping table fromsection 3.  The table has   three columns:   - the code point that is mapped from   - the zero or more code points that it is mapped to   - the reason for the mapping   The columns are separated by semicolons.  Note that the second column   may be empty, or it may have one code point, or it may have more than   one code point, with each code point separated by a space.B.1 Commonly mapped to nothing   ----- Start Table B.1 -----   00AD; ; Map to nothing   034F; ; Map to nothing   1806; ; Map to nothing   180B; ; Map to nothing   180C; ; Map to nothing   180D; ; Map to nothing   200B; ; Map to nothing   200C; ; Map to nothing   200D; ; Map to nothingHoffman & Blanchet          Standards Track                    [Page 31]

RFC 3454        Preparation of Internationalized Strings   December 2002   2060; ; Map to nothing   FE00; ; Map to nothing   FE01; ; Map to nothing   FE02; ; Map to nothing   FE03; ; Map to nothing   FE04; ; Map to nothing   FE05; ; Map to nothing   FE06; ; Map to nothing   FE07; ; Map to nothing   FE08; ; Map to nothing   FE09; ; Map to nothing   FE0A; ; Map to nothing   FE0B; ; Map to nothing   FE0C; ; Map to nothing   FE0D; ; Map to nothing   FE0E; ; Map to nothing   FE0F; ; Map to nothing   FEFF; ; Map to nothing   ----- End Table B.1 -----B.2 Mapping for case-folding used with NFKC   ----- Start Table B.2 -----   0041; 0061; Case map   0042; 0062; Case map   0043; 0063; Case map   0044; 0064; Case map   0045; 0065; Case map   0046; 0066; Case map   0047; 0067; Case map   0048; 0068; Case map   0049; 0069; Case map   004A; 006A; Case map   004B; 006B; Case map   004C; 006C; Case map   004D; 006D; Case map   004E; 006E; Case map   004F; 006F; Case map   0050; 0070; Case map   0051; 0071; Case map   0052; 0072; Case map   0053; 0073; Case map   0054; 0074; Case map   0055; 0075; Case map   0056; 0076; Case map   0057; 0077; Case map   0058; 0078; Case map   0059; 0079; Case mapHoffman & Blanchet          Standards Track                    [Page 32]

RFC 3454        Preparation of Internationalized Strings   December 2002   005A; 007A; Case map   00B5; 03BC; Case map   00C0; 00E0; Case map   00C1; 00E1; Case map   00C2; 00E2; Case map   00C3; 00E3; Case map   00C4; 00E4; Case map   00C5; 00E5; Case map   00C6; 00E6; Case map   00C7; 00E7; Case map   00C8; 00E8; Case map   00C9; 00E9; Case map   00CA; 00EA; Case map   00CB; 00EB; Case map   00CC; 00EC; Case map   00CD; 00ED; Case map   00CE; 00EE; Case map   00CF; 00EF; Case map   00D0; 00F0; Case map   00D1; 00F1; Case map   00D2; 00F2; Case map   00D3; 00F3; Case map   00D4; 00F4; Case map   00D5; 00F5; Case map   00D6; 00F6; Case map   00D8; 00F8; Case map   00D9; 00F9; Case map   00DA; 00FA; Case map   00DB; 00FB; Case map   00DC; 00FC; Case map   00DD; 00FD; Case map   00DE; 00FE; Case map   00DF; 0073 0073; Case map   0100; 0101; Case map   0102; 0103; Case map   0104; 0105; Case map   0106; 0107; Case map   0108; 0109; Case map   010A; 010B; Case map   010C; 010D; Case map   010E; 010F; Case map   0110; 0111; Case map   0112; 0113; Case map   0114; 0115; Case map   0116; 0117; Case map   0118; 0119; Case map   011A; 011B; Case map   011C; 011D; Case mapHoffman & Blanchet          Standards Track                    [Page 33]

RFC 3454        Preparation of Internationalized Strings   December 2002   011E; 011F; Case map   0120; 0121; Case map   0122; 0123; Case map   0124; 0125; Case map   0126; 0127; Case map   0128; 0129; Case map   012A; 012B; Case map   012C; 012D; Case map   012E; 012F; Case map   0130; 0069 0307; Case map   0132; 0133; Case map   0134; 0135; Case map   0136; 0137; Case map   0139; 013A; Case map   013B; 013C; Case map   013D; 013E; Case map   013F; 0140; Case map   0141; 0142; Case map   0143; 0144; Case map   0145; 0146; Case map   0147; 0148; Case map   0149; 02BC 006E; Case map   014A; 014B; Case map   014C; 014D; Case map   014E; 014F; Case map   0150; 0151; Case map   0152; 0153; Case map   0154; 0155; Case map   0156; 0157; Case map   0158; 0159; Case map   015A; 015B; Case map   015C; 015D; Case map   015E; 015F; Case map   0160; 0161; Case map   0162; 0163; Case map   0164; 0165; Case map   0166; 0167; Case map   0168; 0169; Case map   016A; 016B; Case map   016C; 016D; Case map   016E; 016F; Case map   0170; 0171; Case map   0172; 0173; Case map   0174; 0175; Case map   0176; 0177; Case map   0178; 00FF; Case map   0179; 017A; Case map   017B; 017C; Case mapHoffman & Blanchet          Standards Track                    [Page 34]

RFC 3454        Preparation of Internationalized Strings   December 2002   017D; 017E; Case map   017F; 0073; Case map   0181; 0253; Case map   0182; 0183; Case map   0184; 0185; Case map   0186; 0254; Case map   0187; 0188; Case map   0189; 0256; Case map   018A; 0257; Case map   018B; 018C; Case map   018E; 01DD; Case map   018F; 0259; Case map   0190; 025B; Case map   0191; 0192; Case map   0193; 0260; Case map   0194; 0263; Case map   0196; 0269; Case map   0197; 0268; Case map   0198; 0199; Case map   019C; 026F; Case map   019D; 0272; Case map   019F; 0275; Case map   01A0; 01A1; Case map   01A2; 01A3; Case map   01A4; 01A5; Case map   01A6; 0280; Case map   01A7; 01A8; Case map   01A9; 0283; Case map   01AC; 01AD; Case map   01AE; 0288; Case map   01AF; 01B0; Case map   01B1; 028A; Case map   01B2; 028B; Case map   01B3; 01B4; Case map   01B5; 01B6; Case map   01B7; 0292; Case map   01B8; 01B9; Case map   01BC; 01BD; Case map   01C4; 01C6; Case map   01C5; 01C6; Case map   01C7; 01C9; Case map   01C8; 01C9; Case map   01CA; 01CC; Case map   01CB; 01CC; Case map   01CD; 01CE; Case map   01CF; 01D0; Case map   01D1; 01D2; Case map   01D3; 01D4; Case mapHoffman & Blanchet          Standards Track                    [Page 35]

RFC 3454        Preparation of Internationalized Strings   December 2002   01D5; 01D6; Case map   01D7; 01D8; Case map   01D9; 01DA; Case map   01DB; 01DC; Case map   01DE; 01DF; Case map   01E0; 01E1; Case map   01E2; 01E3; Case map   01E4; 01E5; Case map   01E6; 01E7; Case map   01E8; 01E9; Case map   01EA; 01EB; Case map   01EC; 01ED; Case map   01EE; 01EF; Case map   01F0; 006A 030C; Case map   01F1; 01F3; Case map   01F2; 01F3; Case map   01F4; 01F5; Case map   01F6; 0195; Case map   01F7; 01BF; Case map   01F8; 01F9; Case map   01FA; 01FB; Case map   01FC; 01FD; Case map   01FE; 01FF; Case map   0200; 0201; Case map   0202; 0203; Case map   0204; 0205; Case map   0206; 0207; Case map   0208; 0209; Case map   020A; 020B; Case map   020C; 020D; Case map   020E; 020F; Case map   0210; 0211; Case map   0212; 0213; Case map   0214; 0215; Case map   0216; 0217; Case map   0218; 0219; Case map   021A; 021B; Case map   021C; 021D; Case map   021E; 021F; Case map   0220; 019E; Case map   0222; 0223; Case map   0224; 0225; Case map   0226; 0227; Case map   0228; 0229; Case map   022A; 022B; Case map   022C; 022D; Case map   022E; 022F; Case map   0230; 0231; Case mapHoffman & Blanchet          Standards Track                    [Page 36]

RFC 3454        Preparation of Internationalized Strings   December 2002   0232; 0233; Case map   0345; 03B9; Case map   037A; 0020 03B9; Additional folding   0386; 03AC; Case map   0388; 03AD; Case map   0389; 03AE; Case map   038A; 03AF; Case map   038C; 03CC; Case map   038E; 03CD; Case map   038F; 03CE; Case map   0390; 03B9 0308 0301; Case map   0391; 03B1; Case map   0392; 03B2; Case map   0393; 03B3; Case map   0394; 03B4; Case map   0395; 03B5; Case map   0396; 03B6; Case map   0397; 03B7; Case map   0398; 03B8; Case map   0399; 03B9; Case map   039A; 03BA; Case map   039B; 03BB; Case map   039C; 03BC; Case map   039D; 03BD; Case map   039E; 03BE; Case map   039F; 03BF; Case map   03A0; 03C0; Case map   03A1; 03C1; Case map   03A3; 03C3; Case map   03A4; 03C4; Case map   03A5; 03C5; Case map   03A6; 03C6; Case map   03A7; 03C7; Case map   03A8; 03C8; Case map   03A9; 03C9; Case map   03AA; 03CA; Case map   03AB; 03CB; Case map   03B0; 03C5 0308 0301; Case map   03C2; 03C3; Case map   03D0; 03B2; Case map   03D1; 03B8; Case map   03D2; 03C5; Additional folding   03D3; 03CD; Additional folding   03D4; 03CB; Additional folding   03D5; 03C6; Case map   03D6; 03C0; Case map   03D8; 03D9; Case map   03DA; 03DB; Case mapHoffman & Blanchet          Standards Track                    [Page 37]

RFC 3454        Preparation of Internationalized Strings   December 2002   03DC; 03DD; Case map   03DE; 03DF; Case map   03E0; 03E1; Case map   03E2; 03E3; Case map   03E4; 03E5; Case map   03E6; 03E7; Case map   03E8; 03E9; Case map   03EA; 03EB; Case map   03EC; 03ED; Case map   03EE; 03EF; Case map   03F0; 03BA; Case map   03F1; 03C1; Case map   03F2; 03C3; Case map   03F4; 03B8; Case map   03F5; 03B5; Case map   0400; 0450; Case map   0401; 0451; Case map   0402; 0452; Case map   0403; 0453; Case map   0404; 0454; Case map   0405; 0455; Case map   0406; 0456; Case map   0407; 0457; Case map   0408; 0458; Case map   0409; 0459; Case map   040A; 045A; Case map   040B; 045B; Case map   040C; 045C; Case map   040D; 045D; Case map   040E; 045E; Case map   040F; 045F; Case map   0410; 0430; Case map   0411; 0431; Case map   0412; 0432; Case map   0413; 0433; Case map   0414; 0434; Case map   0415; 0435; Case map   0416; 0436; Case map   0417; 0437; Case map   0418; 0438; Case map   0419; 0439; Case map   041A; 043A; Case map   041B; 043B; Case map   041C; 043C; Case map   041D; 043D; Case map   041E; 043E; Case map   041F; 043F; Case map   0420; 0440; Case mapHoffman & Blanchet          Standards Track                    [Page 38]

RFC 3454        Preparation of Internationalized Strings   December 2002   0421; 0441; Case map   0422; 0442; Case map   0423; 0443; Case map   0424; 0444; Case map   0425; 0445; Case map   0426; 0446; Case map   0427; 0447; Case map   0428; 0448; Case map   0429; 0449; Case map   042A; 044A; Case map   042B; 044B; Case map   042C; 044C; Case map   042D; 044D; Case map   042E; 044E; Case map   042F; 044F; Case map   0460; 0461; Case map   0462; 0463; Case map   0464; 0465; Case map   0466; 0467; Case map   0468; 0469; Case map   046A; 046B; Case map   046C; 046D; Case map   046E; 046F; Case map   0470; 0471; Case map   0472; 0473; Case map   0474; 0475; Case map   0476; 0477; Case map   0478; 0479; Case map   047A; 047B; Case map   047C; 047D; Case map   047E; 047F; Case map   0480; 0481; Case map   048A; 048B; Case map   048C; 048D; Case map   048E; 048F; Case map   0490; 0491; Case map   0492; 0493; Case map   0494; 0495; Case map   0496; 0497; Case map   0498; 0499; Case map   049A; 049B; Case map   049C; 049D; Case map   049E; 049F; Case map   04A0; 04A1; Case map   04A2; 04A3; Case map   04A4; 04A5; Case map   04A6; 04A7; Case map   04A8; 04A9; Case mapHoffman & Blanchet          Standards Track                    [Page 39]

RFC 3454        Preparation of Internationalized Strings   December 2002   04AA; 04AB; Case map   04AC; 04AD; Case map   04AE; 04AF; Case map   04B0; 04B1; Case map   04B2; 04B3; Case map   04B4; 04B5; Case map   04B6; 04B7; Case map   04B8; 04B9; Case map   04BA; 04BB; Case map   04BC; 04BD; Case map   04BE; 04BF; Case map   04C1; 04C2; Case map   04C3; 04C4; Case map   04C5; 04C6; Case map   04C7; 04C8; Case map   04C9; 04CA; Case map   04CB; 04CC; Case map   04CD; 04CE; Case map   04D0; 04D1; Case map   04D2; 04D3; Case map   04D4; 04D5; Case map   04D6; 04D7; Case map   04D8; 04D9; Case map   04DA; 04DB; Case map   04DC; 04DD; Case map   04DE; 04DF; Case map   04E0; 04E1; Case map   04E2; 04E3; Case map   04E4; 04E5; Case map   04E6; 04E7; Case map   04E8; 04E9; Case map   04EA; 04EB; Case map   04EC; 04ED; Case map   04EE; 04EF; Case map   04F0; 04F1; Case map   04F2; 04F3; Case map   04F4; 04F5; Case map   04F8; 04F9; Case map   0500; 0501; Case map   0502; 0503; Case map   0504; 0505; Case map   0506; 0507; Case map   0508; 0509; Case map   050A; 050B; Case map   050C; 050D; Case map   050E; 050F; Case map   0531; 0561; Case map   0532; 0562; Case mapHoffman & Blanchet          Standards Track                    [Page 40]

RFC 3454        Preparation of Internationalized Strings   December 2002   0533; 0563; Case map   0534; 0564; Case map   0535; 0565; Case map   0536; 0566; Case map   0537; 0567; Case map   0538; 0568; Case map   0539; 0569; Case map   053A; 056A; Case map   053B; 056B; Case map   053C; 056C; Case map   053D; 056D; Case map   053E; 056E; Case map   053F; 056F; Case map   0540; 0570; Case map   0541; 0571; Case map   0542; 0572; Case map   0543; 0573; Case map   0544; 0574; Case map   0545; 0575; Case map   0546; 0576; Case map   0547; 0577; Case map   0548; 0578; Case map   0549; 0579; Case map   054A; 057A; Case map   054B; 057B; Case map   054C; 057C; Case map   054D; 057D; Case map   054E; 057E; Case map   054F; 057F; Case map   0550; 0580; Case map   0551; 0581; Case map   0552; 0582; Case map   0553; 0583; Case map   0554; 0584; Case map   0555; 0585; Case map   0556; 0586; Case map   0587; 0565 0582; Case map   1E00; 1E01; Case map   1E02; 1E03; Case map   1E04; 1E05; Case map   1E06; 1E07; Case map   1E08; 1E09; Case map   1E0A; 1E0B; Case map   1E0C; 1E0D; Case map   1E0E; 1E0F; Case map   1E10; 1E11; Case map   1E12; 1E13; Case map   1E14; 1E15; Case mapHoffman & Blanchet          Standards Track                    [Page 41]

RFC 3454        Preparation of Internationalized Strings   December 2002   1E16; 1E17; Case map   1E18; 1E19; Case map   1E1A; 1E1B; Case map   1E1C; 1E1D; Case map   1E1E; 1E1F; Case map   1E20; 1E21; Case map   1E22; 1E23; Case map   1E24; 1E25; Case map   1E26; 1E27; Case map   1E28; 1E29; Case map   1E2A; 1E2B; Case map   1E2C; 1E2D; Case map   1E2E; 1E2F; Case map   1E30; 1E31; Case map   1E32; 1E33; Case map   1E34; 1E35; Case map   1E36; 1E37; Case map   1E38; 1E39; Case map   1E3A; 1E3B; Case map   1E3C; 1E3D; Case map   1E3E; 1E3F; Case map   1E40; 1E41; Case map   1E42; 1E43; Case map   1E44; 1E45; Case map   1E46; 1E47; Case map   1E48; 1E49; Case map   1E4A; 1E4B; Case map   1E4C; 1E4D; Case map   1E4E; 1E4F; Case map   1E50; 1E51; Case map   1E52; 1E53; Case map   1E54; 1E55; Case map   1E56; 1E57; Case map   1E58; 1E59; Case map   1E5A; 1E5B; Case map   1E5C; 1E5D; Case map   1E5E; 1E5F; Case map   1E60; 1E61; Case map   1E62; 1E63; Case map   1E64; 1E65; Case map   1E66; 1E67; Case map   1E68; 1E69; Case map   1E6A; 1E6B; Case map   1E6C; 1E6D; Case map   1E6E; 1E6F; Case map   1E70; 1E71; Case map   1E72; 1E73; Case map   1E74; 1E75; Case mapHoffman & Blanchet          Standards Track                    [Page 42]

RFC 3454        Preparation of Internationalized Strings   December 2002   1E76; 1E77; Case map   1E78; 1E79; Case map   1E7A; 1E7B; Case map   1E7C; 1E7D; Case map   1E7E; 1E7F; Case map   1E80; 1E81; Case map   1E82; 1E83; Case map   1E84; 1E85; Case map   1E86; 1E87; Case map   1E88; 1E89; Case map   1E8A; 1E8B; Case map   1E8C; 1E8D; Case map   1E8E; 1E8F; Case map   1E90; 1E91; Case map   1E92; 1E93; Case map   1E94; 1E95; Case map   1E96; 0068 0331; Case map   1E97; 0074 0308; Case map   1E98; 0077 030A; Case map   1E99; 0079 030A; Case map   1E9A; 0061 02BE; Case map   1E9B; 1E61; Case map   1EA0; 1EA1; Case map   1EA2; 1EA3; Case map   1EA4; 1EA5; Case map   1EA6; 1EA7; Case map   1EA8; 1EA9; Case map   1EAA; 1EAB; Case map   1EAC; 1EAD; Case map   1EAE; 1EAF; Case map   1EB0; 1EB1; Case map   1EB2; 1EB3; Case map   1EB4; 1EB5; Case map   1EB6; 1EB7; Case map   1EB8; 1EB9; Case map   1EBA; 1EBB; Case map   1EBC; 1EBD; Case map   1EBE; 1EBF; Case map   1EC0; 1EC1; Case map   1EC2; 1EC3; Case map   1EC4; 1EC5; Case map   1EC6; 1EC7; Case map   1EC8; 1EC9; Case map   1ECA; 1ECB; Case map   1ECC; 1ECD; Case map   1ECE; 1ECF; Case map   1ED0; 1ED1; Case map   1ED2; 1ED3; Case mapHoffman & Blanchet          Standards Track                    [Page 43]

RFC 3454        Preparation of Internationalized Strings   December 2002   1ED4; 1ED5; Case map   1ED6; 1ED7; Case map   1ED8; 1ED9; Case map   1EDA; 1EDB; Case map   1EDC; 1EDD; Case map   1EDE; 1EDF; Case map   1EE0; 1EE1; Case map   1EE2; 1EE3; Case map   1EE4; 1EE5; Case map   1EE6; 1EE7; Case map   1EE8; 1EE9; Case map   1EEA; 1EEB; Case map   1EEC; 1EED; Case map   1EEE; 1EEF; Case map   1EF0; 1EF1; Case map   1EF2; 1EF3; Case map   1EF4; 1EF5; Case map   1EF6; 1EF7; Case map   1EF8; 1EF9; Case map   1F08; 1F00; Case map   1F09; 1F01; Case map   1F0A; 1F02; Case map   1F0B; 1F03; Case map   1F0C; 1F04; Case map   1F0D; 1F05; Case map   1F0E; 1F06; Case map   1F0F; 1F07; Case map   1F18; 1F10; Case map   1F19; 1F11; Case map   1F1A; 1F12; Case map   1F1B; 1F13; Case map   1F1C; 1F14; Case map   1F1D; 1F15; Case map   1F28; 1F20; Case map   1F29; 1F21; Case map   1F2A; 1F22; Case map   1F2B; 1F23; Case map   1F2C; 1F24; Case map   1F2D; 1F25; Case map   1F2E; 1F26; Case map   1F2F; 1F27; Case map   1F38; 1F30; Case map   1F39; 1F31; Case map   1F3A; 1F32; Case map   1F3B; 1F33; Case map   1F3C; 1F34; Case map   1F3D; 1F35; Case map   1F3E; 1F36; Case mapHoffman & Blanchet          Standards Track                    [Page 44]

RFC 3454        Preparation of Internationalized Strings   December 2002   1F3F; 1F37; Case map   1F48; 1F40; Case map   1F49; 1F41; Case map   1F4A; 1F42; Case map   1F4B; 1F43; Case map   1F4C; 1F44; Case map   1F4D; 1F45; Case map   1F50; 03C5 0313; Case map   1F52; 03C5 0313 0300; Case map   1F54; 03C5 0313 0301; Case map   1F56; 03C5 0313 0342; Case map   1F59; 1F51; Case map   1F5B; 1F53; Case map   1F5D; 1F55; Case map   1F5F; 1F57; Case map   1F68; 1F60; Case map   1F69; 1F61; Case map   1F6A; 1F62; Case map   1F6B; 1F63; Case map   1F6C; 1F64; Case map   1F6D; 1F65; Case map   1F6E; 1F66; Case map   1F6F; 1F67; Case map   1F80; 1F00 03B9; Case map   1F81; 1F01 03B9; Case map   1F82; 1F02 03B9; Case map   1F83; 1F03 03B9; Case map   1F84; 1F04 03B9; Case map   1F85; 1F05 03B9; Case map   1F86; 1F06 03B9; Case map   1F87; 1F07 03B9; Case map   1F88; 1F00 03B9; Case map   1F89; 1F01 03B9; Case map   1F8A; 1F02 03B9; Case map   1F8B; 1F03 03B9; Case map   1F8C; 1F04 03B9; Case map   1F8D; 1F05 03B9; Case map   1F8E; 1F06 03B9; Case map   1F8F; 1F07 03B9; Case map   1F90; 1F20 03B9; Case map   1F91; 1F21 03B9; Case map   1F92; 1F22 03B9; Case map   1F93; 1F23 03B9; Case map   1F94; 1F24 03B9; Case map   1F95; 1F25 03B9; Case map   1F96; 1F26 03B9; Case map   1F97; 1F27 03B9; Case map   1F98; 1F20 03B9; Case mapHoffman & Blanchet          Standards Track                    [Page 45]

RFC 3454        Preparation of Internationalized Strings   December 2002   1F99; 1F21 03B9; Case map   1F9A; 1F22 03B9; Case map   1F9B; 1F23 03B9; Case map   1F9C; 1F24 03B9; Case map   1F9D; 1F25 03B9; Case map   1F9E; 1F26 03B9; Case map   1F9F; 1F27 03B9; Case map   1FA0; 1F60 03B9; Case map   1FA1; 1F61 03B9; Case map   1FA2; 1F62 03B9; Case map   1FA3; 1F63 03B9; Case map   1FA4; 1F64 03B9; Case map   1FA5; 1F65 03B9; Case map   1FA6; 1F66 03B9; Case map   1FA7; 1F67 03B9; Case map   1FA8; 1F60 03B9; Case map   1FA9; 1F61 03B9; Case map   1FAA; 1F62 03B9; Case map   1FAB; 1F63 03B9; Case map   1FAC; 1F64 03B9; Case map   1FAD; 1F65 03B9; Case map   1FAE; 1F66 03B9; Case map   1FAF; 1F67 03B9; Case map   1FB2; 1F70 03B9; Case map   1FB3; 03B1 03B9; Case map   1FB4; 03AC 03B9; Case map   1FB6; 03B1 0342; Case map   1FB7; 03B1 0342 03B9; Case map   1FB8; 1FB0; Case map   1FB9; 1FB1; Case map   1FBA; 1F70; Case map   1FBB; 1F71; Case map   1FBC; 03B1 03B9; Case map   1FBE; 03B9; Case map   1FC2; 1F74 03B9; Case map   1FC3; 03B7 03B9; Case map   1FC4; 03AE 03B9; Case map   1FC6; 03B7 0342; Case map   1FC7; 03B7 0342 03B9; Case map   1FC8; 1F72; Case map   1FC9; 1F73; Case map   1FCA; 1F74; Case map   1FCB; 1F75; Case map   1FCC; 03B7 03B9; Case map   1FD2; 03B9 0308 0300; Case map   1FD3; 03B9 0308 0301; Case map   1FD6; 03B9 0342; Case map   1FD7; 03B9 0308 0342; Case mapHoffman & Blanchet          Standards Track                    [Page 46]

RFC 3454        Preparation of Internationalized Strings   December 2002   1FD8; 1FD0; Case map   1FD9; 1FD1; Case map   1FDA; 1F76; Case map   1FDB; 1F77; Case map   1FE2; 03C5 0308 0300; Case map   1FE3; 03C5 0308 0301; Case map   1FE4; 03C1 0313; Case map   1FE6; 03C5 0342; Case map   1FE7; 03C5 0308 0342; Case map   1FE8; 1FE0; Case map   1FE9; 1FE1; Case map   1FEA; 1F7A; Case map   1FEB; 1F7B; Case map   1FEC; 1FE5; Case map   1FF2; 1F7C 03B9; Case map   1FF3; 03C9 03B9; Case map   1FF4; 03CE 03B9; Case map   1FF6; 03C9 0342; Case map   1FF7; 03C9 0342 03B9; Case map   1FF8; 1F78; Case map   1FF9; 1F79; Case map   1FFA; 1F7C; Case map   1FFB; 1F7D; Case map   1FFC; 03C9 03B9; Case map   20A8; 0072 0073; Additional folding   2102; 0063; Additional folding   2103; 00B0 0063; Additional folding   2107; 025B; Additional folding   2109; 00B0 0066; Additional folding   210B; 0068; Additional folding   210C; 0068; Additional folding   210D; 0068; Additional folding   2110; 0069; Additional folding   2111; 0069; Additional folding   2112; 006C; Additional folding   2115; 006E; Additional folding   2116; 006E 006F; Additional folding   2119; 0070; Additional folding   211A; 0071; Additional folding   211B; 0072; Additional folding   211C; 0072; Additional folding   211D; 0072; Additional folding   2120; 0073 006D; Additional folding   2121; 0074 0065 006C; Additional folding   2122; 0074 006D; Additional folding   2124; 007A; Additional folding   2126; 03C9; Case map   2128; 007A; Additional foldingHoffman & Blanchet          Standards Track                    [Page 47]

RFC 3454        Preparation of Internationalized Strings   December 2002   212A; 006B; Case map   212B; 00E5; Case map   212C; 0062; Additional folding   212D; 0063; Additional folding   2130; 0065; Additional folding   2131; 0066; Additional folding   2133; 006D; Additional folding   213E; 03B3; Additional folding   213F; 03C0; Additional folding   2145; 0064; Additional folding   2160; 2170; Case map   2161; 2171; Case map   2162; 2172; Case map   2163; 2173; Case map   2164; 2174; Case map   2165; 2175; Case map   2166; 2176; Case map   2167; 2177; Case map   2168; 2178; Case map   2169; 2179; Case map   216A; 217A; Case map   216B; 217B; Case map   216C; 217C; Case map   216D; 217D; Case map   216E; 217E; Case map   216F; 217F; Case map   24B6; 24D0; Case map   24B7; 24D1; Case map   24B8; 24D2; Case map   24B9; 24D3; Case map   24BA; 24D4; Case map   24BB; 24D5; Case map   24BC; 24D6; Case map   24BD; 24D7; Case map   24BE; 24D8; Case map   24BF; 24D9; Case map   24C0; 24DA; Case map   24C1; 24DB; Case map   24C2; 24DC; Case map   24C3; 24DD; Case map   24C4; 24DE; Case map   24C5; 24DF; Case map   24C6; 24E0; Case map   24C7; 24E1; Case map   24C8; 24E2; Case map   24C9; 24E3; Case map   24CA; 24E4; Case map   24CB; 24E5; Case mapHoffman & Blanchet          Standards Track                    [Page 48]

RFC 3454        Preparation of Internationalized Strings   December 2002   24CC; 24E6; Case map   24CD; 24E7; Case map   24CE; 24E8; Case map   24CF; 24E9; Case map   3371; 0068 0070 0061; Additional folding   3373; 0061 0075; Additional folding   3375; 006F 0076; Additional folding   3380; 0070 0061; Additional folding   3381; 006E 0061; Additional folding   3382; 03BC 0061; Additional folding   3383; 006D 0061; Additional folding   3384; 006B 0061; Additional folding   3385; 006B 0062; Additional folding   3386; 006D 0062; Additional folding   3387; 0067 0062; Additional folding   338A; 0070 0066; Additional folding   338B; 006E 0066; Additional folding   338C; 03BC 0066; Additional folding   3390; 0068 007A; Additional folding   3391; 006B 0068 007A; Additional folding   3392; 006D 0068 007A; Additional folding   3393; 0067 0068 007A; Additional folding   3394; 0074 0068 007A; Additional folding   33A9; 0070 0061; Additional folding   33AA; 006B 0070 0061; Additional folding   33AB; 006D 0070 0061; Additional folding   33AC; 0067 0070 0061; Additional folding   33B4; 0070 0076; Additional folding   33B5; 006E 0076; Additional folding   33B6; 03BC 0076; Additional folding   33B7; 006D 0076; Additional folding   33B8; 006B 0076; Additional folding   33B9; 006D 0076; Additional folding   33BA; 0070 0077; Additional folding   33BB; 006E 0077; Additional folding   33BC; 03BC 0077; Additional folding   33BD; 006D 0077; Additional folding   33BE; 006B 0077; Additional folding   33BF; 006D 0077; Additional folding   33C0; 006B 03C9; Additional folding   33C1; 006D 03C9; Additional folding   33C3; 0062 0071; Additional folding   33C6; 0063 2215 006B 0067; Additional folding   33C7; 0063 006F 002E; Additional folding   33C8; 0064 0062; Additional folding   33C9; 0067 0079; Additional folding   33CB; 0068 0070; Additional folding   33CD; 006B 006B; Additional foldingHoffman & Blanchet          Standards Track                    [Page 49]

RFC 3454        Preparation of Internationalized Strings   December 2002   33CE; 006B 006D; Additional folding   33D7; 0070 0068; Additional folding   33D9; 0070 0070 006D; Additional folding   33DA; 0070 0072; Additional folding   33DC; 0073 0076; Additional folding   33DD; 0077 0062; Additional folding   FB00; 0066 0066; Case map   FB01; 0066 0069; Case map   FB02; 0066 006C; Case map   FB03; 0066 0066 0069; Case map   FB04; 0066 0066 006C; Case map   FB05; 0073 0074; Case map   FB06; 0073 0074; Case map   FB13; 0574 0576; Case map   FB14; 0574 0565; Case map   FB15; 0574 056B; Case map   FB16; 057E 0576; Case map   FB17; 0574 056D; Case map   FF21; FF41; Case map   FF22; FF42; Case map   FF23; FF43; Case map   FF24; FF44; Case map   FF25; FF45; Case map   FF26; FF46; Case map   FF27; FF47; Case map   FF28; FF48; Case map   FF29; FF49; Case map   FF2A; FF4A; Case map   FF2B; FF4B; Case map   FF2C; FF4C; Case map   FF2D; FF4D; Case map   FF2E; FF4E; Case map   FF2F; FF4F; Case map   FF30; FF50; Case map   FF31; FF51; Case map   FF32; FF52; Case map   FF33; FF53; Case map   FF34; FF54; Case map   FF35; FF55; Case map   FF36; FF56; Case map   FF37; FF57; Case map   FF38; FF58; Case map   FF39; FF59; Case map   FF3A; FF5A; Case map   10400; 10428; Case map   10401; 10429; Case map   10402; 1042A; Case map   10403; 1042B; Case mapHoffman & Blanchet          Standards Track                    [Page 50]

RFC 3454        Preparation of Internationalized Strings   December 2002   10404; 1042C; Case map   10405; 1042D; Case map   10406; 1042E; Case map   10407; 1042F; Case map   10408; 10430; Case map   10409; 10431; Case map   1040A; 10432; Case map   1040B; 10433; Case map   1040C; 10434; Case map   1040D; 10435; Case map   1040E; 10436; Case map   1040F; 10437; Case map   10410; 10438; Case map   10411; 10439; Case map   10412; 1043A; Case map   10413; 1043B; Case map   10414; 1043C; Case map   10415; 1043D; Case map   10416; 1043E; Case map   10417; 1043F; Case map   10418; 10440; Case map   10419; 10441; Case map   1041A; 10442; Case map   1041B; 10443; Case map   1041C; 10444; Case map   1041D; 10445; Case map   1041E; 10446; Case map   1041F; 10447; Case map   10420; 10448; Case map   10421; 10449; Case map   10422; 1044A; Case map   10423; 1044B; Case map   10424; 1044C; Case map   10425; 1044D; Case map   1D400; 0061; Additional folding   1D401; 0062; Additional folding   1D402; 0063; Additional folding   1D403; 0064; Additional folding   1D404; 0065; Additional folding   1D405; 0066; Additional folding   1D406; 0067; Additional folding   1D407; 0068; Additional folding   1D408; 0069; Additional folding   1D409; 006A; Additional folding   1D40A; 006B; Additional folding   1D40B; 006C; Additional folding   1D40C; 006D; Additional folding   1D40D; 006E; Additional foldingHoffman & Blanchet          Standards Track                    [Page 51]

RFC 3454        Preparation of Internationalized Strings   December 2002   1D40E; 006F; Additional folding   1D40F; 0070; Additional folding   1D410; 0071; Additional folding   1D411; 0072; Additional folding   1D412; 0073; Additional folding   1D413; 0074; Additional folding   1D414; 0075; Additional folding   1D415; 0076; Additional folding   1D416; 0077; Additional folding   1D417; 0078; Additional folding   1D418; 0079; Additional folding   1D419; 007A; Additional folding   1D434; 0061; Additional folding   1D435; 0062; Additional folding   1D436; 0063; Additional folding   1D437; 0064; Additional folding   1D438; 0065; Additional folding   1D439; 0066; Additional folding   1D43A; 0067; Additional folding   1D43B; 0068; Additional folding   1D43C; 0069; Additional folding   1D43D; 006A; Additional folding   1D43E; 006B; Additional folding   1D43F; 006C; Additional folding   1D440; 006D; Additional folding   1D441; 006E; Additional folding   1D442; 006F; Additional folding   1D443; 0070; Additional folding   1D444; 0071; Additional folding   1D445; 0072; Additional folding   1D446; 0073; Additional folding   1D447; 0074; Additional folding   1D448; 0075; Additional folding   1D449; 0076; Additional folding   1D44A; 0077; Additional folding   1D44B; 0078; Additional folding   1D44C; 0079; Additional folding   1D44D; 007A; Additional folding   1D468; 0061; Additional folding   1D469; 0062; Additional folding   1D46A; 0063; Additional folding   1D46B; 0064; Additional folding   1D46C; 0065; Additional folding   1D46D; 0066; Additional folding   1D46E; 0067; Additional folding   1D46F; 0068; Additional folding   1D470; 0069; Additional folding   1D471; 006A; Additional foldingHoffman & Blanchet          Standards Track                    [Page 52]

RFC 3454        Preparation of Internationalized Strings   December 2002   1D472; 006B; Additional folding   1D473; 006C; Additional folding   1D474; 006D; Additional folding   1D475; 006E; Additional folding   1D476; 006F; Additional folding   1D477; 0070; Additional folding   1D478; 0071; Additional folding   1D479; 0072; Additional folding   1D47A; 0073; Additional folding   1D47B; 0074; Additional folding   1D47C; 0075; Additional folding   1D47D; 0076; Additional folding   1D47E; 0077; Additional folding   1D47F; 0078; Additional folding   1D480; 0079; Additional folding   1D481; 007A; Additional folding   1D49C; 0061; Additional folding   1D49E; 0063; Additional folding   1D49F; 0064; Additional folding   1D4A2; 0067; Additional folding   1D4A5; 006A; Additional folding   1D4A6; 006B; Additional folding   1D4A9; 006E; Additional folding   1D4AA; 006F; Additional folding   1D4AB; 0070; Additional folding   1D4AC; 0071; Additional folding   1D4AE; 0073; Additional folding   1D4AF; 0074; Additional folding   1D4B0; 0075; Additional folding   1D4B1; 0076; Additional folding   1D4B2; 0077; Additional folding   1D4B3; 0078; Additional folding   1D4B4; 0079; Additional folding   1D4B5; 007A; Additional folding   1D4D0; 0061; Additional folding   1D4D1; 0062; Additional folding   1D4D2; 0063; Additional folding   1D4D3; 0064; Additional folding   1D4D4; 0065; Additional folding   1D4D5; 0066; Additional folding   1D4D6; 0067; Additional folding   1D4D7; 0068; Additional folding   1D4D8; 0069; Additional folding   1D4D9; 006A; Additional folding   1D4DA; 006B; Additional folding   1D4DB; 006C; Additional folding   1D4DC; 006D; Additional folding   1D4DD; 006E; Additional foldingHoffman & Blanchet          Standards Track                    [Page 53]

RFC 3454        Preparation of Internationalized Strings   December 2002   1D4DE; 006F; Additional folding   1D4DF; 0070; Additional folding   1D4E0; 0071; Additional folding   1D4E1; 0072; Additional folding   1D4E2; 0073; Additional folding   1D4E3; 0074; Additional folding   1D4E4; 0075; Additional folding   1D4E5; 0076; Additional folding   1D4E6; 0077; Additional folding   1D4E7; 0078; Additional folding   1D4E8; 0079; Additional folding   1D4E9; 007A; Additional folding   1D504; 0061; Additional folding   1D505; 0062; Additional folding   1D507; 0064; Additional folding   1D508; 0065; Additional folding   1D509; 0066; Additional folding   1D50A; 0067; Additional folding   1D50D; 006A; Additional folding   1D50E; 006B; Additional folding   1D50F; 006C; Additional folding   1D510; 006D; Additional folding   1D511; 006E; Additional folding   1D512; 006F; Additional folding   1D513; 0070; Additional folding   1D514; 0071; Additional folding   1D516; 0073; Additional folding   1D517; 0074; Additional folding   1D518; 0075; Additional folding   1D519; 0076; Additional folding   1D51A; 0077; Additional folding   1D51B; 0078; Additional folding   1D51C; 0079; Additional folding   1D538; 0061; Additional folding   1D539; 0062; Additional folding   1D53B; 0064; Additional folding   1D53C; 0065; Additional folding   1D53D; 0066; Additional folding   1D53E; 0067; Additional folding   1D540; 0069; Additional folding   1D541; 006A; Additional folding   1D542; 006B; Additional folding   1D543; 006C; Additional folding   1D544; 006D; Additional folding   1D546; 006F; Additional folding   1D54A; 0073; Additional folding   1D54B; 0074; Additional folding   1D54C; 0075; Additional foldingHoffman & Blanchet          Standards Track                    [Page 54]

RFC 3454        Preparation of Internationalized Strings   December 2002   1D54D; 0076; Additional folding   1D54E; 0077; Additional folding   1D54F; 0078; Additional folding   1D550; 0079; Additional folding   1D56C; 0061; Additional folding   1D56D; 0062; Additional folding   1D56E; 0063; Additional folding   1D56F; 0064; Additional folding   1D570; 0065; Additional folding   1D571; 0066; Additional folding   1D572; 0067; Additional folding   1D573; 0068; Additional folding   1D574; 0069; Additional folding   1D575; 006A; Additional folding   1D576; 006B; Additional folding   1D577; 006C; Additional folding   1D578; 006D; Additional folding   1D579; 006E; Additional folding   1D57A; 006F; Additional folding   1D57B; 0070; Additional folding   1D57C; 0071; Additional folding   1D57D; 0072; Additional folding   1D57E; 0073; Additional folding   1D57F; 0074; Additional folding   1D580; 0075; Additional folding   1D581; 0076; Additional folding   1D582; 0077; Additional folding   1D583; 0078; Additional folding   1D584; 0079; Additional folding   1D585; 007A; Additional folding   1D5A0; 0061; Additional folding   1D5A1; 0062; Additional folding   1D5A2; 0063; Additional folding   1D5A3; 0064; Additional folding   1D5A4; 0065; Additional folding   1D5A5; 0066; Additional folding   1D5A6; 0067; Additional folding   1D5A7; 0068; Additional folding   1D5A8; 0069; Additional folding   1D5A9; 006A; Additional folding   1D5AA; 006B; Additional folding   1D5AB; 006C; Additional folding   1D5AC; 006D; Additional folding   1D5AD; 006E; Additional folding   1D5AE; 006F; Additional folding   1D5AF; 0070; Additional folding   1D5B0; 0071; Additional folding   1D5B1; 0072; Additional foldingHoffman & Blanchet          Standards Track                    [Page 55]

RFC 3454        Preparation of Internationalized Strings   December 2002   1D5B2; 0073; Additional folding   1D5B3; 0074; Additional folding   1D5B4; 0075; Additional folding   1D5B5; 0076; Additional folding   1D5B6; 0077; Additional folding   1D5B7; 0078; Additional folding   1D5B8; 0079; Additional folding   1D5B9; 007A; Additional folding   1D5D4; 0061; Additional folding   1D5D5; 0062; Additional folding   1D5D6; 0063; Additional folding   1D5D7; 0064; Additional folding   1D5D8; 0065; Additional folding   1D5D9; 0066; Additional folding   1D5DA; 0067; Additional folding   1D5DB; 0068; Additional folding   1D5DC; 0069; Additional folding   1D5DD; 006A; Additional folding   1D5DE; 006B; Additional folding   1D5DF; 006C; Additional folding   1D5E0; 006D; Additional folding   1D5E1; 006E; Additional folding   1D5E2; 006F; Additional folding   1D5E3; 0070; Additional folding   1D5E4; 0071; Additional folding   1D5E5; 0072; Additional folding   1D5E6; 0073; Additional folding   1D5E7; 0074; Additional folding   1D5E8; 0075; Additional folding   1D5E9; 0076; Additional folding   1D5EA; 0077; Additional folding   1D5EB; 0078; Additional folding   1D5EC; 0079; Additional folding   1D5ED; 007A; Additional folding   1D608; 0061; Additional folding   1D609; 0062; Additional folding   1D60A; 0063; Additional folding   1D60B; 0064; Additional folding   1D60C; 0065; Additional folding   1D60D; 0066; Additional folding   1D60E; 0067; Additional folding   1D60F; 0068; Additional folding   1D610; 0069; Additional folding   1D611; 006A; Additional folding   1D612; 006B; Additional folding   1D613; 006C; Additional folding   1D614; 006D; Additional folding   1D615; 006E; Additional foldingHoffman & Blanchet          Standards Track                    [Page 56]

RFC 3454        Preparation of Internationalized Strings   December 2002   1D616; 006F; Additional folding   1D617; 0070; Additional folding   1D618; 0071; Additional folding   1D619; 0072; Additional folding   1D61A; 0073; Additional folding   1D61B; 0074; Additional folding   1D61C; 0075; Additional folding   1D61D; 0076; Additional folding   1D61E; 0077; Additional folding   1D61F; 0078; Additional folding   1D620; 0079; Additional folding   1D621; 007A; Additional folding   1D63C; 0061; Additional folding   1D63D; 0062; Additional folding   1D63E; 0063; Additional folding   1D63F; 0064; Additional folding   1D640; 0065; Additional folding   1D641; 0066; Additional folding   1D642; 0067; Additional folding   1D643; 0068; Additional folding   1D644; 0069; Additional folding   1D645; 006A; Additional folding   1D646; 006B; Additional folding   1D647; 006C; Additional folding   1D648; 006D; Additional folding   1D649; 006E; Additional folding   1D64A; 006F; Additional folding   1D64B; 0070; Additional folding   1D64C; 0071; Additional folding   1D64D; 0072; Additional folding   1D64E; 0073; Additional folding   1D64F; 0074; Additional folding   1D650; 0075; Additional folding   1D651; 0076; Additional folding   1D652; 0077; Additional folding   1D653; 0078; Additional folding   1D654; 0079; Additional folding   1D655; 007A; Additional folding   1D670; 0061; Additional folding   1D671; 0062; Additional folding   1D672; 0063; Additional folding   1D673; 0064; Additional folding   1D674; 0065; Additional folding   1D675; 0066; Additional folding   1D676; 0067; Additional folding   1D677; 0068; Additional folding   1D678; 0069; Additional folding   1D679; 006A; Additional foldingHoffman & Blanchet          Standards Track                    [Page 57]

RFC 3454        Preparation of Internationalized Strings   December 2002   1D67A; 006B; Additional folding   1D67B; 006C; Additional folding   1D67C; 006D; Additional folding   1D67D; 006E; Additional folding   1D67E; 006F; Additional folding   1D67F; 0070; Additional folding   1D680; 0071; Additional folding   1D681; 0072; Additional folding   1D682; 0073; Additional folding   1D683; 0074; Additional folding   1D684; 0075; Additional folding   1D685; 0076; Additional folding   1D686; 0077; Additional folding   1D687; 0078; Additional folding   1D688; 0079; Additional folding   1D689; 007A; Additional folding   1D6A8; 03B1; Additional folding   1D6A9; 03B2; Additional folding   1D6AA; 03B3; Additional folding   1D6AB; 03B4; Additional folding   1D6AC; 03B5; Additional folding   1D6AD; 03B6; Additional folding   1D6AE; 03B7; Additional folding   1D6AF; 03B8; Additional folding   1D6B0; 03B9; Additional folding   1D6B1; 03BA; Additional folding   1D6B2; 03BB; Additional folding   1D6B3; 03BC; Additional folding   1D6B4; 03BD; Additional folding   1D6B5; 03BE; Additional folding   1D6B6; 03BF; Additional folding   1D6B7; 03C0; Additional folding   1D6B8; 03C1; Additional folding   1D6B9; 03B8; Additional folding   1D6BA; 03C3; Additional folding   1D6BB; 03C4; Additional folding   1D6BC; 03C5; Additional folding   1D6BD; 03C6; Additional folding   1D6BE; 03C7; Additional folding   1D6BF; 03C8; Additional folding   1D6C0; 03C9; Additional folding   1D6D3; 03C3; Additional folding   1D6E2; 03B1; Additional folding   1D6E3; 03B2; Additional folding   1D6E4; 03B3; Additional folding   1D6E5; 03B4; Additional folding   1D6E6; 03B5; Additional folding   1D6E7; 03B6; Additional foldingHoffman & Blanchet          Standards Track                    [Page 58]

RFC 3454        Preparation of Internationalized Strings   December 2002   1D6E8; 03B7; Additional folding   1D6E9; 03B8; Additional folding   1D6EA; 03B9; Additional folding   1D6EB; 03BA; Additional folding   1D6EC; 03BB; Additional folding   1D6ED; 03BC; Additional folding   1D6EE; 03BD; Additional folding   1D6EF; 03BE; Additional folding   1D6F0; 03BF; Additional folding   1D6F1; 03C0; Additional folding   1D6F2; 03C1; Additional folding   1D6F3; 03B8; Additional folding   1D6F4; 03C3; Additional folding   1D6F5; 03C4; Additional folding   1D6F6; 03C5; Additional folding   1D6F7; 03C6; Additional folding   1D6F8; 03C7; Additional folding   1D6F9; 03C8; Additional folding   1D6FA; 03C9; Additional folding   1D70D; 03C3; Additional folding   1D71C; 03B1; Additional folding   1D71D; 03B2; Additional folding   1D71E; 03B3; Additional folding   1D71F; 03B4; Additional folding   1D720; 03B5; Additional folding   1D721; 03B6; Additional folding   1D722; 03B7; Additional folding   1D723; 03B8; Additional folding   1D724; 03B9; Additional folding   1D725; 03BA; Additional folding   1D726; 03BB; Additional folding   1D727; 03BC; Additional folding   1D728; 03BD; Additional folding   1D729; 03BE; Additional folding   1D72A; 03BF; Additional folding   1D72B; 03C0; Additional folding   1D72C; 03C1; Additional folding   1D72D; 03B8; Additional folding   1D72E; 03C3; Additional folding   1D72F; 03C4; Additional folding   1D730; 03C5; Additional folding   1D731; 03C6; Additional folding   1D732; 03C7; Additional folding   1D733; 03C8; Additional folding   1D734; 03C9; Additional folding   1D747; 03C3; Additional folding   1D756; 03B1; Additional folding   1D757; 03B2; Additional foldingHoffman & Blanchet          Standards Track                    [Page 59]

RFC 3454        Preparation of Internationalized Strings   December 2002   1D758; 03B3; Additional folding   1D759; 03B4; Additional folding   1D75A; 03B5; Additional folding   1D75B; 03B6; Additional folding   1D75C; 03B7; Additional folding   1D75D; 03B8; Additional folding   1D75E; 03B9; Additional folding   1D75F; 03BA; Additional folding   1D760; 03BB; Additional folding   1D761; 03BC; Additional folding   1D762; 03BD; Additional folding   1D763; 03BE; Additional folding   1D764; 03BF; Additional folding   1D765; 03C0; Additional folding   1D766; 03C1; Additional folding   1D767; 03B8; Additional folding   1D768; 03C3; Additional folding   1D769; 03C4; Additional folding   1D76A; 03C5; Additional folding   1D76B; 03C6; Additional folding   1D76C; 03C7; Additional folding   1D76D; 03C8; Additional folding   1D76E; 03C9; Additional folding   1D781; 03C3; Additional folding   1D790; 03B1; Additional folding   1D791; 03B2; Additional folding   1D792; 03B3; Additional folding   1D793; 03B4; Additional folding   1D794; 03B5; Additional folding   1D795; 03B6; Additional folding   1D796; 03B7; Additional folding   1D797; 03B8; Additional folding   1D798; 03B9; Additional folding   1D799; 03BA; Additional folding   1D79A; 03BB; Additional folding   1D79B; 03BC; Additional folding   1D79C; 03BD; Additional folding   1D79D; 03BE; Additional folding   1D79E; 03BF; Additional folding   1D79F; 03C0; Additional folding   1D7A0; 03C1; Additional folding   1D7A1; 03B8; Additional folding   1D7A2; 03C3; Additional folding   1D7A3; 03C4; Additional folding   1D7A4; 03C5; Additional folding   1D7A5; 03C6; Additional folding   1D7A6; 03C7; Additional folding   1D7A7; 03C8; Additional foldingHoffman & Blanchet          Standards Track                    [Page 60]

RFC 3454        Preparation of Internationalized Strings   December 2002   1D7A8; 03C9; Additional folding   1D7BB; 03C3; Additional folding   ----- End Table B.2 -----B.3 Mapping for case-folding used with no normalization   ----- Start Table B.3 -----   0041; 0061; Case map   0042; 0062; Case map   0043; 0063; Case map   0044; 0064; Case map   0045; 0065; Case map   0046; 0066; Case map   0047; 0067; Case map   0048; 0068; Case map   0049; 0069; Case map   004A; 006A; Case map   004B; 006B; Case map   004C; 006C; Case map   004D; 006D; Case map   004E; 006E; Case map   004F; 006F; Case map   0050; 0070; Case map   0051; 0071; Case map   0052; 0072; Case map   0053; 0073; Case map   0054; 0074; Case map   0055; 0075; Case map   0056; 0076; Case map   0057; 0077; Case map   0058; 0078; Case map   0059; 0079; Case map   005A; 007A; Case map   00B5; 03BC; Case map   00C0; 00E0; Case map   00C1; 00E1; Case map   00C2; 00E2; Case map   00C3; 00E3; Case map   00C4; 00E4; Case map   00C5; 00E5; Case map   00C6; 00E6; Case map   00C7; 00E7; Case map   00C8; 00E8; Case map   00C9; 00E9; Case map   00CA; 00EA; Case map   00CB; 00EB; Case map   00CC; 00EC; Case map   00CD; 00ED; Case mapHoffman & Blanchet          Standards Track                    [Page 61]

RFC 3454        Preparation of Internationalized Strings   December 2002   00CE; 00EE; Case map   00CF; 00EF; Case map   00D0; 00F0; Case map   00D1; 00F1; Case map   00D2; 00F2; Case map   00D3; 00F3; Case map   00D4; 00F4; Case map   00D5; 00F5; Case map   00D6; 00F6; Case map   00D8; 00F8; Case map   00D9; 00F9; Case map   00DA; 00FA; Case map   00DB; 00FB; Case map   00DC; 00FC; Case map   00DD; 00FD; Case map   00DE; 00FE; Case map   00DF; 0073 0073; Case map   0100; 0101; Case map   0102; 0103; Case map   0104; 0105; Case map   0106; 0107; Case map   0108; 0109; Case map   010A; 010B; Case map   010C; 010D; Case map   010E; 010F; Case map   0110; 0111; Case map   0112; 0113; Case map   0114; 0115; Case map   0116; 0117; Case map   0118; 0119; Case map   011A; 011B; Case map   011C; 011D; Case map   011E; 011F; Case map   0120; 0121; Case map   0122; 0123; Case map   0124; 0125; Case map   0126; 0127; Case map   0128; 0129; Case map   012A; 012B; Case map   012C; 012D; Case map   012E; 012F; Case map   0130; 0069 0307; Case map   0132; 0133; Case map   0134; 0135; Case map   0136; 0137; Case map   0139; 013A; Case map   013B; 013C; Case map   013D; 013E; Case mapHoffman & Blanchet          Standards Track                    [Page 62]

RFC 3454        Preparation of Internationalized Strings   December 2002   013F; 0140; Case map   0141; 0142; Case map   0143; 0144; Case map   0145; 0146; Case map   0147; 0148; Case map   0149; 02BC 006E; Case map   014A; 014B; Case map   014C; 014D; Case map   014E; 014F; Case map   0150; 0151; Case map   0152; 0153; Case map   0154; 0155; Case map   0156; 0157; Case map   0158; 0159; Case map   015A; 015B; Case map   015C; 015D; Case map   015E; 015F; Case map   0160; 0161; Case map   0162; 0163; Case map   0164; 0165; Case map   0166; 0167; Case map   0168; 0169; Case map   016A; 016B; Case map   016C; 016D; Case map   016E; 016F; Case map   0170; 0171; Case map   0172; 0173; Case map   0174; 0175; Case map   0176; 0177; Case map   0178; 00FF; Case map   0179; 017A; Case map   017B; 017C; Case map   017D; 017E; Case map   017F; 0073; Case map   0181; 0253; Case map   0182; 0183; Case map   0184; 0185; Case map   0186; 0254; Case map   0187; 0188; Case map   0189; 0256; Case map   018A; 0257; Case map   018B; 018C; Case map   018E; 01DD; Case map   018F; 0259; Case map   0190; 025B; Case map   0191; 0192; Case map   0193; 0260; Case map   0194; 0263; Case mapHoffman & Blanchet          Standards Track                    [Page 63]

RFC 3454        Preparation of Internationalized Strings   December 2002   0196; 0269; Case map   0197; 0268; Case map   0198; 0199; Case map   019C; 026F; Case map   019D; 0272; Case map   019F; 0275; Case map   01A0; 01A1; Case map   01A2; 01A3; Case map   01A4; 01A5; Case map   01A6; 0280; Case map   01A7; 01A8; Case map   01A9; 0283; Case map   01AC; 01AD; Case map   01AE; 0288; Case map   01AF; 01B0; Case map   01B1; 028A; Case map   01B2; 028B; Case map   01B3; 01B4; Case map   01B5; 01B6; Case map   01B7; 0292; Case map   01B8; 01B9; Case map   01BC; 01BD; Case map   01C4; 01C6; Case map   01C5; 01C6; Case map   01C7; 01C9; Case map   01C8; 01C9; Case map   01CA; 01CC; Case map   01CB; 01CC; Case map   01CD; 01CE; Case map   01CF; 01D0; Case map   01D1; 01D2; Case map   01D3; 01D4; Case map   01D5; 01D6; Case map   01D7; 01D8; Case map   01D9; 01DA; Case map   01DB; 01DC; Case map   01DE; 01DF; Case map   01E0; 01E1; Case map   01E2; 01E3; Case map   01E4; 01E5; Case map   01E6; 01E7; Case map   01E8; 01E9; Case map   01EA; 01EB; Case map   01EC; 01ED; Case map   01EE; 01EF; Case map   01F0; 006A 030C; Case map   01F1; 01F3; Case map   01F2; 01F3; Case mapHoffman & Blanchet          Standards Track                    [Page 64]

RFC 3454        Preparation of Internationalized Strings   December 2002   01F4; 01F5; Case map   01F6; 0195; Case map   01F7; 01BF; Case map   01F8; 01F9; Case map   01FA; 01FB; Case map   01FC; 01FD; Case map   01FE; 01FF; Case map   0200; 0201; Case map   0202; 0203; Case map   0204; 0205; Case map   0206; 0207; Case map   0208; 0209; Case map   020A; 020B; Case map   020C; 020D; Case map   020E; 020F; Case map   0210; 0211; Case map   0212; 0213; Case map   0214; 0215; Case map   0216; 0217; Case map   0218; 0219; Case map   021A; 021B; Case map   021C; 021D; Case map   021E; 021F; Case map   0220; 019E; Case map   0222; 0223; Case map   0224; 0225; Case map   0226; 0227; Case map   0228; 0229; Case map   022A; 022B; Case map   022C; 022D; Case map   022E; 022F; Case map   0230; 0231; Case map   0232; 0233; Case map   0345; 03B9; Case map   0386; 03AC; Case map   0388; 03AD; Case map   0389; 03AE; Case map   038A; 03AF; Case map   038C; 03CC; Case map   038E; 03CD; Case map   038F; 03CE; Case map   0390; 03B9 0308 0301; Case map   0391; 03B1; Case map   0392; 03B2; Case map   0393; 03B3; Case map   0394; 03B4; Case map   0395; 03B5; Case map   0396; 03B6; Case mapHoffman & Blanchet          Standards Track                    [Page 65]

RFC 3454        Preparation of Internationalized Strings   December 2002   0397; 03B7; Case map   0398; 03B8; Case map   0399; 03B9; Case map   039A; 03BA; Case map   039B; 03BB; Case map   039C; 03BC; Case map   039D; 03BD; Case map   039E; 03BE; Case map   039F; 03BF; Case map   03A0; 03C0; Case map   03A1; 03C1; Case map   03A3; 03C3; Case map   03A4; 03C4; Case map   03A5; 03C5; Case map   03A6; 03C6; Case map   03A7; 03C7; Case map   03A8; 03C8; Case map   03A9; 03C9; Case map   03AA; 03CA; Case map   03AB; 03CB; Case map   03B0; 03C5 0308 0301; Case map   03C2; 03C3; Case map   03D0; 03B2; Case map   03D1; 03B8; Case map   03D5; 03C6; Case map   03D6; 03C0; Case map   03D8; 03D9; Case map   03DA; 03DB; Case map   03DC; 03DD; Case map   03DE; 03DF; Case map   03E0; 03E1; Case map   03E2; 03E3; Case map   03E4; 03E5; Case map   03E6; 03E7; Case map   03E8; 03E9; Case map   03EA; 03EB; Case map   03EC; 03ED; Case map   03EE; 03EF; Case map   03F0; 03BA; Case map   03F1; 03C1; Case map   03F2; 03C3; Case map   03F4; 03B8; Case map   03F5; 03B5; Case map   0400; 0450; Case map   0401; 0451; Case map   0402; 0452; Case map   0403; 0453; Case map   0404; 0454; Case mapHoffman & Blanchet          Standards Track                    [Page 66]

RFC 3454        Preparation of Internationalized Strings   December 2002   0405; 0455; Case map   0406; 0456; Case map   0407; 0457; Case map   0408; 0458; Case map   0409; 0459; Case map   040A; 045A; Case map   040B; 045B; Case map   040C; 045C; Case map   040D; 045D; Case map   040E; 045E; Case map   040F; 045F; Case map   0410; 0430; Case map   0411; 0431; Case map   0412; 0432; Case map   0413; 0433; Case map   0414; 0434; Case map   0415; 0435; Case map   0416; 0436; Case map   0417; 0437; Case map   0418; 0438; Case map   0419; 0439; Case map   041A; 043A; Case map   041B; 043B; Case map   041C; 043C; Case map   041D; 043D; Case map   041E; 043E; Case map   041F; 043F; Case map   0420; 0440; Case map   0421; 0441; Case map   0422; 0442; Case map   0423; 0443; Case map   0424; 0444; Case map   0425; 0445; Case map   0426; 0446; Case map   0427; 0447; Case map   0428; 0448; Case map   0429; 0449; Case map   042A; 044A; Case map   042B; 044B; Case map   042C; 044C; Case map   042D; 044D; Case map   042E; 044E; Case map   042F; 044F; Case map   0460; 0461; Case map   0462; 0463; Case map   0464; 0465; Case map   0466; 0467; Case map   0468; 0469; Case mapHoffman & Blanchet          Standards Track                    [Page 67]

RFC 3454        Preparation of Internationalized Strings   December 2002   046A; 046B; Case map   046C; 046D; Case map   046E; 046F; Case map   0470; 0471; Case map   0472; 0473; Case map   0474; 0475; Case map   0476; 0477; Case map   0478; 0479; Case map   047A; 047B; Case map   047C; 047D; Case map   047E; 047F; Case map   0480; 0481; Case map   048A; 048B; Case map   048C; 048D; Case map   048E; 048F; Case map   0490; 0491; Case map   0492; 0493; Case map   0494; 0495; Case map   0496; 0497; Case map   0498; 0499; Case map   049A; 049B; Case map   049C; 049D; Case map   049E; 049F; Case map   04A0; 04A1; Case map   04A2; 04A3; Case map   04A4; 04A5; Case map   04A6; 04A7; Case map   04A8; 04A9; Case map   04AA; 04AB; Case map   04AC; 04AD; Case map   04AE; 04AF; Case map   04B0; 04B1; Case map   04B2; 04B3; Case map   04B4; 04B5; Case map   04B6; 04B7; Case map   04B8; 04B9; Case map   04BA; 04BB; Case map   04BC; 04BD; Case map   04BE; 04BF; Case map   04C1; 04C2; Case map   04C3; 04C4; Case map   04C5; 04C6; Case map   04C7; 04C8; Case map   04C9; 04CA; Case map   04CB; 04CC; Case map   04CD; 04CE; Case map   04D0; 04D1; Case map   04D2; 04D3; Case mapHoffman & Blanchet          Standards Track                    [Page 68]

RFC 3454        Preparation of Internationalized Strings   December 2002   04D4; 04D5; Case map   04D6; 04D7; Case map   04D8; 04D9; Case map   04DA; 04DB; Case map   04DC; 04DD; Case map   04DE; 04DF; Case map   04E0; 04E1; Case map   04E2; 04E3; Case map   04E4; 04E5; Case map   04E6; 04E7; Case map   04E8; 04E9; Case map   04EA; 04EB; Case map   04EC; 04ED; Case map   04EE; 04EF; Case map   04F0; 04F1; Case map   04F2; 04F3; Case map   04F4; 04F5; Case map   04F8; 04F9; Case map   0500; 0501; Case map   0502; 0503; Case map   0504; 0505; Case map   0506; 0507; Case map   0508; 0509; Case map   050A; 050B; Case map   050C; 050D; Case map   050E; 050F; Case map   0531; 0561; Case map   0532; 0562; Case map   0533; 0563; Case map   0534; 0564; Case map   0535; 0565; Case map   0536; 0566; Case map   0537; 0567; Case map   0538; 0568; Case map   0539; 0569; Case map   053A; 056A; Case map   053B; 056B; Case map   053C; 056C; Case map   053D; 056D; Case map   053E; 056E; Case map   053F; 056F; Case map   0540; 0570; Case map   0541; 0571; Case map   0542; 0572; Case map   0543; 0573; Case map   0544; 0574; Case map   0545; 0575; Case map   0546; 0576; Case mapHoffman & Blanchet          Standards Track                    [Page 69]

RFC 3454        Preparation of Internationalized Strings   December 2002   0547; 0577; Case map   0548; 0578; Case map   0549; 0579; Case map   054A; 057A; Case map   054B; 057B; Case map   054C; 057C; Case map   054D; 057D; Case map   054E; 057E; Case map   054F; 057F; Case map   0550; 0580; Case map   0551; 0581; Case map   0552; 0582; Case map   0553; 0583; Case map   0554; 0584; Case map   0555; 0585; Case map   0556; 0586; Case map   0587; 0565 0582; Case map   1E00; 1E01; Case map   1E02; 1E03; Case map   1E04; 1E05; Case map   1E06; 1E07; Case map   1E08; 1E09; Case map   1E0A; 1E0B; Case map   1E0C; 1E0D; Case map   1E0E; 1E0F; Case map   1E10; 1E11; Case map   1E12; 1E13; Case map   1E14; 1E15; Case map   1E16; 1E17; Case map   1E18; 1E19; Case map   1E1A; 1E1B; Case map   1E1C; 1E1D; Case map   1E1E; 1E1F; Case map   1E20; 1E21; Case map   1E22; 1E23; Case map   1E24; 1E25; Case map   1E26; 1E27; Case map   1E28; 1E29; Case map   1E2A; 1E2B; Case map   1E2C; 1E2D; Case map   1E2E; 1E2F; Case map   1E30; 1E31; Case map   1E32; 1E33; Case map   1E34; 1E35; Case map   1E36; 1E37; Case map   1E38; 1E39; Case map   1E3A; 1E3B; Case map   1E3C; 1E3D; Case mapHoffman & Blanchet          Standards Track                    [Page 70]

RFC 3454        Preparation of Internationalized Strings   December 2002   1E3E; 1E3F; Case map   1E40; 1E41; Case map   1E42; 1E43; Case map   1E44; 1E45; Case map   1E46; 1E47; Case map   1E48; 1E49; Case map   1E4A; 1E4B; Case map   1E4C; 1E4D; Case map   1E4E; 1E4F; Case map   1E50; 1E51; Case map   1E52; 1E53; Case map   1E54; 1E55; Case map   1E56; 1E57; Case map   1E58; 1E59; Case map   1E5A; 1E5B; Case map   1E5C; 1E5D; Case map   1E5E; 1E5F; Case map   1E60; 1E61; Case map   1E62; 1E63; Case map   1E64; 1E65; Case map   1E66; 1E67; Case map   1E68; 1E69; Case map   1E6A; 1E6B; Case map   1E6C; 1E6D; Case map   1E6E; 1E6F; Case map   1E70; 1E71; Case map   1E72; 1E73; Case map   1E74; 1E75; Case map   1E76; 1E77; Case map   1E78; 1E79; Case map   1E7A; 1E7B; Case map   1E7C; 1E7D; Case map   1E7E; 1E7F; Case map   1E80; 1E81; Case map   1E82; 1E83; Case map   1E84; 1E85; Case map   1E86; 1E87; Case map   1E88; 1E89; Case map   1E8A; 1E8B; Case map   1E8C; 1E8D; Case map   1E8E; 1E8F; Case map   1E90; 1E91; Case map   1E92; 1E93; Case map   1E94; 1E95; Case map   1E96; 0068 0331; Case map   1E97; 0074 0308; Case map   1E98; 0077 030A; Case map   1E99; 0079 030A; Case mapHoffman & Blanchet          Standards Track                    [Page 71]

RFC 3454        Preparation of Internationalized Strings   December 2002   1E9A; 0061 02BE; Case map   1E9B; 1E61; Case map   1EA0; 1EA1; Case map   1EA2; 1EA3; Case map   1EA4; 1EA5; Case map   1EA6; 1EA7; Case map   1EA8; 1EA9; Case map   1EAA; 1EAB; Case map   1EAC; 1EAD; Case map   1EAE; 1EAF; Case map   1EB0; 1EB1; Case map   1EB2; 1EB3; Case map   1EB4; 1EB5; Case map   1EB6; 1EB7; Case map   1EB8; 1EB9; Case map   1EBA; 1EBB; Case map   1EBC; 1EBD; Case map   1EBE; 1EBF; Case map   1EC0; 1EC1; Case map   1EC2; 1EC3; Case map   1EC4; 1EC5; Case map   1EC6; 1EC7; Case map   1EC8; 1EC9; Case map   1ECA; 1ECB; Case map   1ECC; 1ECD; Case map   1ECE; 1ECF; Case map   1ED0; 1ED1; Case map   1ED2; 1ED3; Case map   1ED4; 1ED5; Case map   1ED6; 1ED7; Case map   1ED8; 1ED9; Case map   1EDA; 1EDB; Case map   1EDC; 1EDD; Case map   1EDE; 1EDF; Case map   1EE0; 1EE1; Case map   1EE2; 1EE3; Case map   1EE4; 1EE5; Case map   1EE6; 1EE7; Case map   1EE8; 1EE9; Case map   1EEA; 1EEB; Case map   1EEC; 1EED; Case map   1EEE; 1EEF; Case map   1EF0; 1EF1; Case map   1EF2; 1EF3; Case map   1EF4; 1EF5; Case map   1EF6; 1EF7; Case map   1EF8; 1EF9; Case map   1F08; 1F00; Case mapHoffman & Blanchet          Standards Track                    [Page 72]

RFC 3454        Preparation of Internationalized Strings   December 2002   1F09; 1F01; Case map   1F0A; 1F02; Case map   1F0B; 1F03; Case map   1F0C; 1F04; Case map   1F0D; 1F05; Case map   1F0E; 1F06; Case map   1F0F; 1F07; Case map   1F18; 1F10; Case map   1F19; 1F11; Case map   1F1A; 1F12; Case map   1F1B; 1F13; Case map   1F1C; 1F14; Case map   1F1D; 1F15; Case map   1F28; 1F20; Case map   1F29; 1F21; Case map   1F2A; 1F22; Case map   1F2B; 1F23; Case map   1F2C; 1F24; Case map   1F2D; 1F25; Case map   1F2E; 1F26; Case map   1F2F; 1F27; Case map   1F38; 1F30; Case map   1F39; 1F31; Case map   1F3A; 1F32; Case map   1F3B; 1F33; Case map   1F3C; 1F34; Case map   1F3D; 1F35; Case map   1F3E; 1F36; Case map   1F3F; 1F37; Case map   1F48; 1F40; Case map   1F49; 1F41; Case map   1F4A; 1F42; Case map   1F4B; 1F43; Case map   1F4C; 1F44; Case map   1F4D; 1F45; Case map   1F50; 03C5 0313; Case map   1F52; 03C5 0313 0300; Case map   1F54; 03C5 0313 0301; Case map   1F56; 03C5 0313 0342; Case map   1F59; 1F51; Case map   1F5B; 1F53; Case map   1F5D; 1F55; Case map   1F5F; 1F57; Case map   1F68; 1F60; Case map   1F69; 1F61; Case map   1F6A; 1F62; Case map   1F6B; 1F63; Case map   1F6C; 1F64; Case mapHoffman & Blanchet          Standards Track                    [Page 73]

RFC 3454        Preparation of Internationalized Strings   December 2002   1F6D; 1F65; Case map   1F6E; 1F66; Case map   1F6F; 1F67; Case map   1F80; 1F00 03B9; Case map   1F81; 1F01 03B9; Case map   1F82; 1F02 03B9; Case map   1F83; 1F03 03B9; Case map   1F84; 1F04 03B9; Case map   1F85; 1F05 03B9; Case map   1F86; 1F06 03B9; Case map   1F87; 1F07 03B9; Case map   1F88; 1F00 03B9; Case map   1F89; 1F01 03B9; Case map   1F8A; 1F02 03B9; Case map   1F8B; 1F03 03B9; Case map   1F8C; 1F04 03B9; Case map   1F8D; 1F05 03B9; Case map   1F8E; 1F06 03B9; Case map   1F8F; 1F07 03B9; Case map   1F90; 1F20 03B9; Case map   1F91; 1F21 03B9; Case map   1F92; 1F22 03B9; Case map   1F93; 1F23 03B9; Case map   1F94; 1F24 03B9; Case map   1F95; 1F25 03B9; Case map   1F96; 1F26 03B9; Case map   1F97; 1F27 03B9; Case map   1F98; 1F20 03B9; Case map   1F99; 1F21 03B9; Case map   1F9A; 1F22 03B9; Case map   1F9B; 1F23 03B9; Case map   1F9C; 1F24 03B9; Case map   1F9D; 1F25 03B9; Case map   1F9E; 1F26 03B9; Case map   1F9F; 1F27 03B9; Case map   1FA0; 1F60 03B9; Case map   1FA1; 1F61 03B9; Case map   1FA2; 1F62 03B9; Case map   1FA3; 1F63 03B9; Case map   1FA4; 1F64 03B9; Case map   1FA5; 1F65 03B9; Case map   1FA6; 1F66 03B9; Case map   1FA7; 1F67 03B9; Case map   1FA8; 1F60 03B9; Case map   1FA9; 1F61 03B9; Case map   1FAA; 1F62 03B9; Case map   1FAB; 1F63 03B9; Case map   1FAC; 1F64 03B9; Case mapHoffman & Blanchet          Standards Track                    [Page 74]

RFC 3454        Preparation of Internationalized Strings   December 2002   1FAD; 1F65 03B9; Case map   1FAE; 1F66 03B9; Case map   1FAF; 1F67 03B9; Case map   1FB2; 1F70 03B9; Case map   1FB3; 03B1 03B9; Case map   1FB4; 03AC 03B9; Case map   1FB6; 03B1 0342; Case map   1FB7; 03B1 0342 03B9; Case map   1FB8; 1FB0; Case map   1FB9; 1FB1; Case map   1FBA; 1F70; Case map   1FBB; 1F71; Case map   1FBC; 03B1 03B9; Case map   1FBE; 03B9; Case map   1FC2; 1F74 03B9; Case map   1FC3; 03B7 03B9; Case map   1FC4; 03AE 03B9; Case map   1FC6; 03B7 0342; Case map   1FC7; 03B7 0342 03B9; Case map   1FC8; 1F72; Case map   1FC9; 1F73; Case map   1FCA; 1F74; Case map   1FCB; 1F75; Case map   1FCC; 03B7 03B9; Case map   1FD2; 03B9 0308 0300; Case map   1FD3; 03B9 0308 0301; Case map   1FD6; 03B9 0342; Case map   1FD7; 03B9 0308 0342; Case map   1FD8; 1FD0; Case map   1FD9; 1FD1; Case map   1FDA; 1F76; Case map   1FDB; 1F77; Case map   1FE2; 03C5 0308 0300; Case map   1FE3; 03C5 0308 0301; Case map   1FE4; 03C1 0313; Case map   1FE6; 03C5 0342; Case map   1FE7; 03C5 0308 0342; Case map   1FE8; 1FE0; Case map   1FE9; 1FE1; Case map   1FEA; 1F7A; Case map   1FEB; 1F7B; Case map   1FEC; 1FE5; Case map   1FF2; 1F7C 03B9; Case map   1FF3; 03C9 03B9; Case map   1FF4; 03CE 03B9; Case map   1FF6; 03C9 0342; Case map   1FF7; 03C9 0342 03B9; Case map   1FF8; 1F78; Case mapHoffman & Blanchet          Standards Track                    [Page 75]

RFC 3454        Preparation of Internationalized Strings   December 2002   1FF9; 1F79; Case map   1FFA; 1F7C; Case map   1FFB; 1F7D; Case map   1FFC; 03C9 03B9; Case map   2126; 03C9; Case map   212A; 006B; Case map   212B; 00E5; Case map   2160; 2170; Case map   2161; 2171; Case map   2162; 2172; Case map   2163; 2173; Case map   2164; 2174; Case map   2165; 2175; Case map   2166; 2176; Case map   2167; 2177; Case map   2168; 2178; Case map   2169; 2179; Case map   216A; 217A; Case map   216B; 217B; Case map   216C; 217C; Case map   216D; 217D; Case map   216E; 217E; Case map   216F; 217F; Case map   24B6; 24D0; Case map   24B7; 24D1; Case map   24B8; 24D2; Case map   24B9; 24D3; Case map   24BA; 24D4; Case map   24BB; 24D5; Case map   24BC; 24D6; Case map   24BD; 24D7; Case map   24BE; 24D8; Case map   24BF; 24D9; Case map   24C0; 24DA; Case map   24C1; 24DB; Case map   24C2; 24DC; Case map   24C3; 24DD; Case map   24C4; 24DE; Case map   24C5; 24DF; Case map   24C6; 24E0; Case map   24C7; 24E1; Case map   24C8; 24E2; Case map   24C9; 24E3; Case map   24CA; 24E4; Case map   24CB; 24E5; Case map   24CC; 24E6; Case map   24CD; 24E7; Case map   24CE; 24E8; Case mapHoffman & Blanchet          Standards Track                    [Page 76]

RFC 3454        Preparation of Internationalized Strings   December 2002   24CF; 24E9; Case map   FB00; 0066 0066; Case map   FB01; 0066 0069; Case map   FB02; 0066 006C; Case map   FB03; 0066 0066 0069; Case map   FB04; 0066 0066 006C; Case map   FB05; 0073 0074; Case map   FB06; 0073 0074; Case map   FB13; 0574 0576; Case map   FB14; 0574 0565; Case map   FB15; 0574 056B; Case map   FB16; 057E 0576; Case map   FB17; 0574 056D; Case map   FF21; FF41; Case map   FF22; FF42; Case map   FF23; FF43; Case map   FF24; FF44; Case map   FF25; FF45; Case map   FF26; FF46; Case map   FF27; FF47; Case map   FF28; FF48; Case map   FF29; FF49; Case map   FF2A; FF4A; Case map   FF2B; FF4B; Case map   FF2C; FF4C; Case map   FF2D; FF4D; Case map   FF2E; FF4E; Case map   FF2F; FF4F; Case map   FF30; FF50; Case map   FF31; FF51; Case map   FF32; FF52; Case map   FF33; FF53; Case map   FF34; FF54; Case map   FF35; FF55; Case map   FF36; FF56; Case map   FF37; FF57; Case map   FF38; FF58; Case map   FF39; FF59; Case map   FF3A; FF5A; Case map   10400; 10428; Case map   10401; 10429; Case map   10402; 1042A; Case map   10403; 1042B; Case map   10404; 1042C; Case map   10405; 1042D; Case map   10406; 1042E; Case map   10407; 1042F; Case map   10408; 10430; Case mapHoffman & Blanchet          Standards Track                    [Page 77]

RFC 3454        Preparation of Internationalized Strings   December 2002   10409; 10431; Case map   1040A; 10432; Case map   1040B; 10433; Case map   1040C; 10434; Case map   1040D; 10435; Case map   1040E; 10436; Case map   1040F; 10437; Case map   10410; 10438; Case map   10411; 10439; Case map   10412; 1043A; Case map   10413; 1043B; Case map   10414; 1043C; Case map   10415; 1043D; Case map   10416; 1043E; Case map   10417; 1043F; Case map   10418; 10440; Case map   10419; 10441; Case map   1041A; 10442; Case map   1041B; 10443; Case map   1041C; 10444; Case map   1041D; 10445; Case map   1041E; 10446; Case map   1041F; 10447; Case map   10420; 10448; Case map   10421; 10449; Case map   10422; 1044A; Case map   10423; 1044B; Case map   10424; 1044C; Case map   10425; 1044D; Case map   ----- End Table B.3 -----C. Prohibition tables   The tables in this appendix consist of lines with one prohibited code   point per line.  The format of the lines are the value of the code   point, a semicolon, and a comment which is the name of the code   point.C.1 Space charactersC.1.1 ASCII space characters   ----- Start Table C.1.1 -----   0020; SPACE   ----- End Table C.1.1 -----Hoffman & Blanchet          Standards Track                    [Page 78]

RFC 3454        Preparation of Internationalized Strings   December 2002C.1.2 Non-ASCII space characters   ----- Start Table C.1.2 -----   00A0; NO-BREAK SPACE   1680; OGHAM SPACE MARK   2000; EN QUAD   2001; EM QUAD   2002; EN SPACE   2003; EM SPACE   2004; THREE-PER-EM SPACE   2005; FOUR-PER-EM SPACE   2006; SIX-PER-EM SPACE   2007; FIGURE SPACE   2008; PUNCTUATION SPACE   2009; THIN SPACE   200A; HAIR SPACE   200B; ZERO WIDTH SPACE   202F; NARROW NO-BREAK SPACE   205F; MEDIUM MATHEMATICAL SPACE   3000; IDEOGRAPHIC SPACE   ----- End Table C.1.2 -----C.2 Control charactersC.2.1 ASCII control characters   ----- Start Table C.2.1 -----   0000-001F; [CONTROL CHARACTERS]   007F; DELETE   ----- End Table C.2.1 -----C.2.2 Non-ASCII control characters   ----- Start Table C.2.2 -----   0080-009F; [CONTROL CHARACTERS]   06DD; ARABIC END OF AYAH   070F; SYRIAC ABBREVIATION MARK   180E; MONGOLIAN VOWEL SEPARATOR   200C; ZERO WIDTH NON-JOINER   200D; ZERO WIDTH JOINER   2028; LINE SEPARATOR   2029; PARAGRAPH SEPARATOR   2060; WORD JOINER   2061; FUNCTION APPLICATION   2062; INVISIBLE TIMES   2063; INVISIBLE SEPARATOR   206A-206F; [CONTROL CHARACTERS]   FEFF; ZERO WIDTH NO-BREAK SPACE   FFF9-FFFC; [CONTROL CHARACTERS]Hoffman & Blanchet          Standards Track                    [Page 79]

RFC 3454        Preparation of Internationalized Strings   December 2002   1D173-1D17A; [MUSICAL CONTROL CHARACTERS]   ----- End Table C.2.2 -----C.3 Private use   ----- Start Table C.3 -----   E000-F8FF; [PRIVATE USE, PLANE 0]   F0000-FFFFD; [PRIVATE USE, PLANE 15]   100000-10FFFD; [PRIVATE USE, PLANE 16]   ----- End Table C.3 -----C.4 Non-character code points   ----- Start Table C.4 -----   FDD0-FDEF; [NONCHARACTER CODE POINTS]   FFFE-FFFF; [NONCHARACTER CODE POINTS]   1FFFE-1FFFF; [NONCHARACTER CODE POINTS]   2FFFE-2FFFF; [NONCHARACTER CODE POINTS]   3FFFE-3FFFF; [NONCHARACTER CODE POINTS]   4FFFE-4FFFF; [NONCHARACTER CODE POINTS]   5FFFE-5FFFF; [NONCHARACTER CODE POINTS]   6FFFE-6FFFF; [NONCHARACTER CODE POINTS]   7FFFE-7FFFF; [NONCHARACTER CODE POINTS]   8FFFE-8FFFF; [NONCHARACTER CODE POINTS]   9FFFE-9FFFF; [NONCHARACTER CODE POINTS]   AFFFE-AFFFF; [NONCHARACTER CODE POINTS]   BFFFE-BFFFF; [NONCHARACTER CODE POINTS]   CFFFE-CFFFF; [NONCHARACTER CODE POINTS]   DFFFE-DFFFF; [NONCHARACTER CODE POINTS]   EFFFE-EFFFF; [NONCHARACTER CODE POINTS]   FFFFE-FFFFF; [NONCHARACTER CODE POINTS]   10FFFE-10FFFF; [NONCHARACTER CODE POINTS]   ----- End Table C.4 -----C.5 Surrogate codes   ----- Start Table C.5 -----   D800-DFFF; [SURROGATE CODES]   ----- End Table C.5 -----C.6 Inappropriate for plain text   ----- Start Table C.6 -----   FFF9; INTERLINEAR ANNOTATION ANCHOR   FFFA; INTERLINEAR ANNOTATION SEPARATOR   FFFB; INTERLINEAR ANNOTATION TERMINATOR   FFFC; OBJECT REPLACEMENT CHARACTER   FFFD; REPLACEMENT CHARACTERHoffman & Blanchet          Standards Track                    [Page 80]

RFC 3454        Preparation of Internationalized Strings   December 2002   ----- End Table C.6 -----C.7 Inappropriate for canonical representation   ----- Start Table C.7 -----   2FF0-2FFB; [IDEOGRAPHIC DESCRIPTION CHARACTERS]   ----- End Table C.7 -----C.8 Change display properties or are deprecated   ----- Start Table C.8 -----   0340; COMBINING GRAVE TONE MARK   0341; COMBINING ACUTE TONE MARK   200E; LEFT-TO-RIGHT MARK   200F; RIGHT-TO-LEFT MARK   202A; LEFT-TO-RIGHT EMBEDDING   202B; RIGHT-TO-LEFT EMBEDDING   202C; POP DIRECTIONAL FORMATTING   202D; LEFT-TO-RIGHT OVERRIDE   202E; RIGHT-TO-LEFT OVERRIDE   206A; INHIBIT SYMMETRIC SWAPPING   206B; ACTIVATE SYMMETRIC SWAPPING   206C; INHIBIT ARABIC FORM SHAPING   206D; ACTIVATE ARABIC FORM SHAPING   206E; NATIONAL DIGIT SHAPES   206F; NOMINAL DIGIT SHAPES   ----- End Table C.8 -----C.9 Tagging characters   ----- Start Table C.9 -----   E0001; LANGUAGE TAG   E0020-E007F; [TAGGING CHARACTERS]   ----- End Table C.9 -----D. Bidirectional tablesD.1 Characters with bidirectional property "R" or "AL"   ----- Start Table D.1 -----   05BE   05C0   05C3   05D0-05EA   05F0-05F4   061B   061F   0621-063AHoffman & Blanchet          Standards Track                    [Page 81]

RFC 3454        Preparation of Internationalized Strings   December 2002   0640-064A   066D-066F   0671-06D5   06DD   06E5-06E6   06FA-06FE   0700-070D   0710   0712-072C   0780-07A5   07B1   200F   FB1D   FB1F-FB28   FB2A-FB36   FB38-FB3C   FB3E   FB40-FB41   FB43-FB44   FB46-FBB1   FBD3-FD3D   FD50-FD8F   FD92-FDC7   FDF0-FDFC   FE70-FE74   FE76-FEFC   ----- End Table D.1 -----D.2 Characters with bidirectional property "L"   ----- Start Table D.2 -----   0041-005A   0061-007A   00AA   00B5   00BA   00C0-00D6   00D8-00F6   00F8-0220   0222-0233   0250-02AD   02B0-02B8   02BB-02C1   02D0-02D1   02E0-02E4   02EE   037A   0386Hoffman & Blanchet          Standards Track                    [Page 82]

RFC 3454        Preparation of Internationalized Strings   December 2002   0388-038A   038C   038E-03A1   03A3-03CE   03D0-03F5   0400-0482   048A-04CE   04D0-04F5   04F8-04F9   0500-050F   0531-0556   0559-055F   0561-0587   0589   0903   0905-0939   093D-0940   0949-094C   0950   0958-0961   0964-0970   0982-0983   0985-098C   098F-0990   0993-09A8   09AA-09B0   09B2   09B6-09B9   09BE-09C0   09C7-09C8   09CB-09CC   09D7   09DC-09DD   09DF-09E1   09E6-09F1   09F4-09FA   0A05-0A0A   0A0F-0A10   0A13-0A28   0A2A-0A30   0A32-0A33   0A35-0A36   0A38-0A39   0A3E-0A40   0A59-0A5C   0A5E   0A66-0A6F   0A72-0A74Hoffman & Blanchet          Standards Track                    [Page 83]

RFC 3454        Preparation of Internationalized Strings   December 2002   0A83   0A85-0A8B   0A8D   0A8F-0A91   0A93-0AA8   0AAA-0AB0   0AB2-0AB3   0AB5-0AB9   0ABD-0AC0   0AC9   0ACB-0ACC   0AD0   0AE0   0AE6-0AEF   0B02-0B03   0B05-0B0C   0B0F-0B10   0B13-0B28   0B2A-0B30   0B32-0B33   0B36-0B39   0B3D-0B3E   0B40   0B47-0B48   0B4B-0B4C   0B57   0B5C-0B5D   0B5F-0B61   0B66-0B70   0B83   0B85-0B8A   0B8E-0B90   0B92-0B95   0B99-0B9A   0B9C   0B9E-0B9F   0BA3-0BA4   0BA8-0BAA   0BAE-0BB5   0BB7-0BB9   0BBE-0BBF   0BC1-0BC2   0BC6-0BC8   0BCA-0BCC   0BD7   0BE7-0BF2   0C01-0C03   0C05-0C0CHoffman & Blanchet          Standards Track                    [Page 84]

RFC 3454        Preparation of Internationalized Strings   December 2002   0C0E-0C10   0C12-0C28   0C2A-0C33   0C35-0C39   0C41-0C44   0C60-0C61   0C66-0C6F   0C82-0C83   0C85-0C8C   0C8E-0C90   0C92-0CA8   0CAA-0CB3   0CB5-0CB9   0CBE   0CC0-0CC4   0CC7-0CC8   0CCA-0CCB   0CD5-0CD6   0CDE   0CE0-0CE1   0CE6-0CEF   0D02-0D03   0D05-0D0C   0D0E-0D10   0D12-0D28   0D2A-0D39   0D3E-0D40   0D46-0D48   0D4A-0D4C   0D57   0D60-0D61   0D66-0D6F   0D82-0D83   0D85-0D96   0D9A-0DB1   0DB3-0DBB   0DBD   0DC0-0DC6   0DCF-0DD1   0DD8-0DDF   0DF2-0DF4   0E01-0E30   0E32-0E33   0E40-0E46   0E4F-0E5B   0E81-0E82   0E84   0E87-0E88Hoffman & Blanchet          Standards Track                    [Page 85]

RFC 3454        Preparation of Internationalized Strings   December 2002   0E8A   0E8D   0E94-0E97   0E99-0E9F   0EA1-0EA3   0EA5   0EA7   0EAA-0EAB   0EAD-0EB0   0EB2-0EB3   0EBD   0EC0-0EC4   0EC6   0ED0-0ED9   0EDC-0EDD   0F00-0F17   0F1A-0F34   0F36   0F38   0F3E-0F47   0F49-0F6A   0F7F   0F85   0F88-0F8B   0FBE-0FC5   0FC7-0FCC   0FCF   1000-1021   1023-1027   1029-102A   102C   1031   1038   1040-1057   10A0-10C5   10D0-10F8   10FB   1100-1159   115F-11A2   11A8-11F9   1200-1206   1208-1246   1248   124A-124D   1250-1256   1258   125A-125D   1260-1286Hoffman & Blanchet          Standards Track                    [Page 86]

RFC 3454        Preparation of Internationalized Strings   December 2002   1288   128A-128D   1290-12AE   12B0   12B2-12B5   12B8-12BE   12C0   12C2-12C5   12C8-12CE   12D0-12D6   12D8-12EE   12F0-130E   1310   1312-1315   1318-131E   1320-1346   1348-135A   1361-137C   13A0-13F4   1401-1676   1681-169A   16A0-16F0   1700-170C   170E-1711   1720-1731   1735-1736   1740-1751   1760-176C   176E-1770   1780-17B6   17BE-17C5   17C7-17C8   17D4-17DA   17DC   17E0-17E9   1810-1819   1820-1877   1880-18A8   1E00-1E9B   1EA0-1EF9   1F00-1F15   1F18-1F1D   1F20-1F45   1F48-1F4D   1F50-1F57   1F59   1F5B   1F5DHoffman & Blanchet          Standards Track                    [Page 87]

RFC 3454        Preparation of Internationalized Strings   December 2002   1F5F-1F7D   1F80-1FB4   1FB6-1FBC   1FBE   1FC2-1FC4   1FC6-1FCC   1FD0-1FD3   1FD6-1FDB   1FE0-1FEC   1FF2-1FF4   1FF6-1FFC   200E   2071   207F   2102   2107   210A-2113   2115   2119-211D   2124   2126   2128   212A-212D   212F-2131   2133-2139   213D-213F   2145-2149   2160-2183   2336-237A   2395   249C-24E9   3005-3007   3021-3029   3031-3035   3038-303C   3041-3096   309D-309F   30A1-30FA   30FC-30FF   3105-312C   3131-318E   3190-31B7   31F0-321C   3220-3243   3260-327B   327F-32B0   32C0-32CB   32D0-32FEHoffman & Blanchet          Standards Track                    [Page 88]

RFC 3454        Preparation of Internationalized Strings   December 2002   3300-3376   337B-33DD   33E0-33FE   3400-4DB5   4E00-9FA5   A000-A48C   AC00-D7A3   D800-FA2D   FA30-FA6A   FB00-FB06   FB13-FB17   FF21-FF3A   FF41-FF5A   FF66-FFBE   FFC2-FFC7   FFCA-FFCF   FFD2-FFD7   FFDA-FFDC   10300-1031E   10320-10323   10330-1034A   10400-10425   10428-1044D   1D000-1D0F5   1D100-1D126   1D12A-1D166   1D16A-1D172   1D183-1D184   1D18C-1D1A9   1D1AE-1D1DD   1D400-1D454   1D456-1D49C   1D49E-1D49F   1D4A2   1D4A5-1D4A6   1D4A9-1D4AC   1D4AE-1D4B9   1D4BB   1D4BD-1D4C0   1D4C2-1D4C3   1D4C5-1D505   1D507-1D50A   1D50D-1D514   1D516-1D51C   1D51E-1D539   1D53B-1D53E   1D540-1D544   1D546Hoffman & Blanchet          Standards Track                    [Page 89]

RFC 3454        Preparation of Internationalized Strings   December 2002   1D54A-1D550   1D552-1D6A3   1D6A8-1D7C9   20000-2A6D6   2F800-2FA1D   F0000-FFFFD   100000-10FFFD   ----- End Table D.2 -----Authors' Addresses   Paul Hoffman   Internet Mail Consortium and VPN Consortium   127 Segre Place   Santa Cruz, CA  95060 USA   EMail: paul.hoffman@imc.org and paul.hoffman@vpnc.org   Marc Blanchet   Viagenie inc.   2875 boul. Laurier, bur. 300   Ste-Foy, Quebec, Canada, G1V 2M2   EMail: Marc.Blanchet@viagenie.qc.caHoffman & Blanchet          Standards Track                    [Page 90]

RFC 3454        Preparation of Internationalized Strings   December 2002Full Copyright Statement   Copyright (C) The Internet Society (2002).  All Rights Reserved.   This document and translations of it may be copied and furnished to   others, and derivative works that comment on or otherwise explain it   or assist in its implementation may be prepared, copied, published   and distributed, in whole or in part, without restriction of any   kind, provided that the above copyright notice and this paragraph are   included on all such copies and derivative works.  However, this   document itself may not be modified in any way, such as by removing   the copyright notice or references to the Internet Society or other   Internet organizations, except as needed for the purpose of   developing Internet standards in which case the procedures for   copyrights defined in the Internet Standards process must be   followed, or as required to translate it into languages other than   English.   The limited permissions granted above are perpetual and will not be   revoked by the Internet Society or its successors or assigns.   This document and the information contained herein is provided on an   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.Acknowledgement   Funding for the RFC Editor function is currently provided by the   Internet Society.Hoffman & Blanchet          Standards Track                    [Page 91]

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