toolsandutils/e32tools/readtype/unicodedata.html
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+<html>
+
+
+
+<head>
+
+<meta NAME="GENERATOR" CONTENT="Microsoft FrontPage 4.0">
+
+<meta HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
+
+<link REL="stylesheet" HREF="http://www.unicode.org/unicode.css" TYPE="text/css">
+
+<title>UnicodeData File Format</title>
+
+</head>
+
+
+
+<body>
+
+
+
+<h1>UnicodeData File Format<br> 
+Version 3.0.0</h1>
+
+
+
+<table BORDER="1" CELLSPACING="2" CELLPADDING="0" HEIGHT="87" WIDTH="100%">
+
+  <tr>
+
+    <td VALIGN="TOP" width="144">Revision</td>
+
+    <td VALIGN="TOP">3.0.0</td>
+
+  </tr>
+
+  <tr>
+
+    <td VALIGN="TOP" width="144">Authors</td>
+
+    <td VALIGN="TOP">Mark Davis and Ken Whistler</td>
+
+  </tr>
+
+  <tr>
+
+    <td VALIGN="TOP" width="144">Date</td>
+
+    <td VALIGN="TOP">1999-09-12</td>
+
+  </tr>
+
+  <tr>
+
+    <td VALIGN="TOP" width="144">This Version</td>
+
+    <td VALIGN="TOP"><a href="ftp://ftp.unicode.org/Public/3.0-Update/UnicodeData-3.0.0.html">ftp://ftp.unicode.org/Public/3.0-Update/UnicodeData-3.0.0.html</a></td>
+
+  </tr>
+
+  <tr>
+
+    <td VALIGN="TOP" width="144">Previous Version</td>
+
+    <td VALIGN="TOP">n/a</td>
+
+  </tr>
+
+  <tr>
+
+    <td VALIGN="TOP" width="144">Latest Version</td>
+
+    <td VALIGN="TOP"><a href="ftp://ftp.unicode.org/Public/3.0-Update/UnicodeData-3.0.0.html">ftp://ftp.unicode.org/Public/3.0-Update/UnicodeData-3.0.0.html</a></td>
+
+  </tr>
+
+</table>
+
+
+
+<p align="center">Copyright © 1995-1999 Unicode, Inc. All Rights reserved.<br>    
+    
+<i>For more information, including Disclamer and Limitations, see <a HREF="UnicodeCharacterDatabase-3.0.0.html">UnicodeCharacterDatabase-3.0.0.html</a> </i></p>   
+   
+   
+   
+<p>This document describes the format of the UnicodeData.txt file, which is one of the    
+   
+files in the Unicode Character Database. The document is divided into the following    
+   
+sections:    
+   
+   
+   
+<ul>   
+   
+  <li><a HREF="#Field Formats">Field Formats</a> <ul>   
+   
+      <li><a HREF="#General Category">General Category</a> </li>   
+   
+      <li><a HREF="#Bidirectional Category">Bidirectional Category</a> </li>   
+   
+      <li><a HREF="#Character Decomposition">Character Decomposition Mapping</a> </li>  
+  
+      <li><a HREF="#Canonical Combining Classes">Canonical Combining Classes</a> </li>  
+  
+      <li><a HREF="#Decompositions and Normalization">Decompositions and Normalization</a> </li>  
+  
+      <li><a HREF="#Case Mappings">Case Mappings</a> </li>  
+  
+    </ul>  
+  
+  </li>  
+  
+  <li><a HREF="#Property Invariants">Property Invariants</a> </li>  
+  
+  <li><a HREF="#Modification History">Modification History</a> </li>  
+  
+</ul>  
+  
+  
+  
+<p><b>Warning: </b>the information in this file does not completely describe the use and   
+  
+interpretation of Unicode character properties and behavior. It must be used in   
+  
+conjunction with the data in the other files in the Unicode Character Database, and relies   
+  
+on the notation and definitions supplied in <i><a href="http://www.unicode.org/unicode/standard/versions/Unicode3.0.html"> The Unicode 
+Standard</a></i>. All chapter references   
+  
+are to Version 3.0 of the standard.</p>  
+  
+  
+  
+<h2><a NAME="Field Formats"></a>Field Formats</h2>    
+    
+    
+    
+<p>The file consists of lines containing fields terminated by semicolons. Each line     
+    
+represents the data for one encoded character in the Unicode Standard. Every encoded     
+    
+character has a data entry, with the exception of certain special ranges, as detailed     
+    
+below.     
+    
+    
+    
+<ul>    
+    
+  <li>There are six special ranges of characters that are represented only by their start and     
+    
+    end characters, since the properties in the file are uniform, except for code values     
+    
+    (which are all sequential and assigned). </li>    
+    
+  <li>The names of CJK ideograph characters and the names and decompositions of Hangul     
+    
+    syllable characters are algorithmically derivable. (See the Unicode Standard and <a    
+    
+    HREF="http://www.unicode.org/unicode/reports/tr15/">Unicode Technical Report #15</a> for     
+    
+    more information). </li>    
+    
+  <li>Surrogate code values and private use characters have no names. </li>    
+    
+  <li>The Private Use character outside of the BMP (U+F0000..U+FFFFD, U+100000..U+10FFFD) are     
+    
+    not listed. These correspond to surrogate pairs where the first surrogate is in the High     
+    
+    Surrogate Private Use section. </li>    
+    
+</ul>    
+    
+    
+    
+<p>The exact ranges represented by start and end characters are:     
+    
+    
+    
+<ul>    
+    
+  <li>CJK Ideographs Extension A (U+3400 - U+4DB5) </li>    
+    
+  <li>CJK Ideographs (U+4E00 - U+9FA5) </li>    
+    
+  <li>Hangul Syllables (U+AC00 - U+D7A3) </li>    
+    
+  <li>Non-Private Use High Surrogates (U+D800 - U+DB7F) </li>    
+    
+  <li>Private Use High Surrogates (U+DB80 - U+DBFF) </li>    
+    
+  <li>Low Surrogates (U+DC00 - U+DFFF) </li>    
+    
+  <li>The Private Use Area (U+E000 - U+F8FF) </li>    
+    
+</ul>    
+    
+    
+    
+<p>The following table describes the format and meaning of each field in a data entry in     
+    
+the UnicodeData file. Fields which contain normative information are so indicated.</p>    
+    
+    
+    
+<table BORDER="1" CELLSPACING="2" CELLPADDING="2">    
+    
+  <tr>    
+    
+    <th VALIGN="top" ALIGN="LEFT"><p ALIGN="LEFT">Field</th>    
+    
+    <th VALIGN="top" ALIGN="LEFT"><p ALIGN="LEFT">Name</th>    
+    
+    <th VALIGN="top" ALIGN="LEFT"><p ALIGN="LEFT">Status</th>    
+    
+    <th VALIGN="top" ALIGN="LEFT"><p ALIGN="LEFT">Explanation</th>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <th VALIGN="top">0</th>    
+    
+    <td VALIGN="top">Code value</td>    
+    
+    <td VALIGN="top">normative</td>    
+    
+    <td VALIGN="top">Code value in 4-digit hexadecimal format.</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <th VALIGN="top">1</th>    
+    
+    <td VALIGN="top">Character name</td>    
+    
+    <td VALIGN="top">normative</td>    
+    
+    <td VALIGN="top">These names match exactly the names published in Chapter 14 of the     
+    
+    Unicode Standard, Version 3.0.</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <th VALIGN="top">2</th>    
+    
+    <td VALIGN="top"><a HREF="#General Category">General Category</a> </td>    
+    
+    <td VALIGN="top">normative / informative<br>    
+    
+    (see below)</td>    
+    
+    <td VALIGN="top">This is a useful breakdown into various &quot;character types&quot; which     
+    
+    can be used as a default categorization in implementations. See below for a brief     
+    
+    explanation.</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <th VALIGN="top">3</th>    
+    
+    <td VALIGN="top"><a HREF="#Canonical Combining Classes">Canonical Combining Classes</a> </td>    
+    
+    <td VALIGN="top">normative</td>    
+    
+    <td VALIGN="top">The classes used for the Canonical Ordering Algorithm in the Unicode     
+    
+    Standard. These classes are also printed in Chapter 4 of the Unicode Standard.</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <th VALIGN="top">4</th>    
+    
+    <td VALIGN="top"><a HREF="#Bidirectional Category">Bidirectional Category</a> </td>    
+    
+    <td VALIGN="top">normative</td>    
+    
+    <td VALIGN="top">See the list below for an explanation of the abbreviations used in this     
+    
+    field. These are the categories required by the Bidirectional Behavior Algorithm in the     
+    
+    Unicode Standard. These categories are summarized in Chapter 3 of the Unicode Standard.</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <th VALIGN="top">5</th>    
+    
+    <td VALIGN="top"><a HREF="#Character Decomposition">Character Decomposition  
+      Mapping</a></td>   
+   
+    <td VALIGN="top">normative</td>   
+   
+    <td VALIGN="top">In the Unicode Standard, not all of the mappings are full (maximal)    
+   
+    decompositions. Recursive application of look-up for decompositions will, in all cases,    
+   
+    lead to a maximal decomposition. The decomposition mappings match exactly the    
+   
+    decomposition mappings published with the character names in the Unicode Standard.</td>   
+   
+  </tr>   
+   
+  <tr>   
+   
+    <th VALIGN="top">6</th>   
+   
+    <td VALIGN="top">Decimal digit value</td>   
+   
+    <td VALIGN="top">normative</td>   
+   
+    <td VALIGN="top">This is a numeric field. If the character has the decimal digit property,    
+   
+    as specified in Chapter 4 of the Unicode Standard, the value of that digit is represented    
+   
+    with an integer value in this field</td>   
+   
+  </tr>   
+   
+  <tr>   
+   
+    <th VALIGN="top">7</th>   
+   
+    <td VALIGN="top">Digit value</td>   
+   
+    <td VALIGN="top">normative</td>   
+   
+    <td VALIGN="top">This is a numeric field. If the character represents a digit, not    
+   
+    necessarily a decimal digit, the value is here. This covers digits which do not form    
+   
+    decimal radix forms, such as the compatibility superscript digits</td>   
+   
+  </tr>   
+   
+  <tr>   
+   
+    <th VALIGN="top">8</th>   
+   
+    <td VALIGN="top">Numeric value</td>   
+   
+    <td VALIGN="top">normative</td>   
+   
+    <td VALIGN="top">This is a numeric field. If the character has the numeric property, as    
+   
+    specified in Chapter 4 of the Unicode Standard, the value of that character is represented    
+   
+    with an integer or rational number in this field. This includes fractions as, e.g.,    
+   
+    &quot;1/5&quot; for U+2155 VULGAR FRACTION ONE FIFTH Also included are numerical values    
+   
+    for compatibility characters such as circled numbers.</td>   
+   
+  </tr>   
+   
+  <tr>   
+   
+    <th VALIGN="top">8</th>   
+   
+    <td VALIGN="top">Mirrored</td>   
+   
+    <td VALIGN="top">normative</td>   
+   
+    <td VALIGN="top">If the character has been identified as a &quot;mirrored&quot; character    
+   
+    in bidirectional text, this field has the value &quot;Y&quot;; otherwise &quot;N&quot;.    
+   
+    The list of mirrored characters is also printed in Chapter 4 of the Unicode Standard.</td>   
+   
+  </tr>   
+   
+  <tr>   
+   
+    <th VALIGN="top">10</th>   
+   
+    <td VALIGN="top">Unicode 1.0 Name</td>   
+   
+    <td VALIGN="top">informative</td>   
+   
+    <td VALIGN="top">This is the old name as published in Unicode 1.0. This name is only    
+   
+    provided when it is significantly different from the Unicode 3.0 name for the character.</td>   
+   
+  </tr>   
+   
+  <tr>   
+   
+    <th VALIGN="top">11</th>   
+   
+    <td VALIGN="top">10646 comment field</td>   
+   
+    <td VALIGN="top">informative</td>   
+   
+    <td VALIGN="top">This is the ISO 10646 comment field. It is in parantheses in the 10646    
+   
+    names list.</td>   
+   
+  </tr>   
+   
+  <tr>   
+   
+    <th VALIGN="top">12</th>   
+   
+    <td VALIGN="top"><a HREF="#Case Mappings">Uppercase Mapping</a></td>   
+   
+    <td VALIGN="top">informative</td>   
+   
+    <td VALIGN="top">Upper case equivalent mapping. If a character is part of an alphabet with    
+   
+    case distinctions, and has an upper case equivalent, then the upper case equivalent is in    
+   
+    this field. See the explanation below on case distinctions. These mappings are always    
+   
+    one-to-one, not one-to-many or many-to-one. This field is informative.</td>   
+   
+  </tr>   
+   
+  <tr>   
+   
+    <th VALIGN="top">13</th>   
+   
+    <td VALIGN="top"><a HREF="#Case Mappings">Lowercase Mapping</a></td>   
+   
+    <td VALIGN="top">informative</td>   
+   
+    <td VALIGN="top">Similar to Uppercase mapping</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <th VALIGN="top">14</th>    
+    
+    <td VALIGN="top"><a HREF="#Case Mappings">Titlecase Mapping</a></td>   
+   
+    <td VALIGN="top">informative</td>   
+   
+    <td VALIGN="top">Similar to Uppercase mapping</td>    
+    
+  </tr>    
+    
+</table>    
+    
+    
+    
+<h3><a NAME="General Category"></a>General Category</h3>    
+    
+    
+    
+<p>The values in this field are abbreviations for the following. Some of the values are     
+    
+normative, and some are informative. For more information, see the Unicode Standard.</p>    
+    
+    
+    
+<p><b>Note:</b> the standard does not assign information to control characters (except for     
+    
+certain cases in the Bidirectional Algorithm). Implementations will generally also assign     
+    
+categories to certain control characters, notably CR and LF, according to platform     
+    
+conventions.</p>    
+    
+    
+    
+<h4>Normative Categories</h4>    
+    
+    
+    
+<table BORDER="0" CELLSPACING="2" CELLPADDING="0">    
+    
+  <tr>    
+    
+    <th><p ALIGN="LEFT">Abbr.</th>    
+    
+    <th><p ALIGN="LEFT">Description</th>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Lu</td>    
+    
+    <td>Letter, Uppercase</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Ll</td>    
+    
+    <td>Letter, Lowercase</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Lt</td>    
+    
+    <td>Letter, Titlecase</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Mn</td>    
+    
+    <td>Mark, Non-Spacing</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Mc</td>    
+    
+    <td>Mark, Spacing Combining</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Me</td>    
+    
+    <td>Mark, Enclosing</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Nd</td>    
+    
+    <td>Number, Decimal Digit</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Nl</td>    
+    
+    <td>Number, Letter</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">No</td>    
+    
+    <td>Number, Other</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Zs</td>    
+    
+    <td>Separator, Space</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Zl</td>    
+    
+    <td>Separator, Line</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Zp</td>    
+    
+    <td>Separator, Paragraph</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Cc</td>    
+    
+    <td>Other, Control</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Cf</td>    
+    
+    <td>Other, Format</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Cs</td>    
+    
+    <td>Other, Surrogate</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Co</td>    
+    
+    <td>Other, Private Use</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Cn</td>    
+    
+    <td>Other, Not Assigned (no characters in the file have this property)</td>    
+    
+  </tr>    
+    
+</table>    
+    
+    
+    
+<h4>Informative Categories</h4>    
+    
+    
+    
+<table BORDER="0" CELLSPACING="2" CELLPADDING="0">    
+    
+  <tr>    
+    
+    <th><p ALIGN="LEFT">Abbr.</th>    
+    
+    <th><p ALIGN="LEFT">Description</th>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Lm</td>    
+    
+    <td>Letter, Modifier</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Lo</td>    
+    
+    <td>Letter, Other</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Pc</td>    
+    
+    <td>Punctuation, Connector</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Pd</td>    
+    
+    <td>Punctuation, Dash</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Ps</td>    
+    
+    <td>Punctuation, Open</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Pe</td>    
+    
+    <td>Punctuation, Close</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Pi</td>    
+    
+    <td>Punctuation, Initial quote (may behave like Ps or Pe depending on usage)</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Pf</td>    
+    
+    <td>Punctuation, Final quote (may behave like Ps or Pe depending on usage)</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Po</td>    
+    
+    <td>Punctuation, Other</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Sm</td>    
+    
+    <td>Symbol, Math</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Sc</td>    
+    
+    <td>Symbol, Currency</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">Sk</td>    
+    
+    <td>Symbol, Modifier</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">So</td>    
+    
+    <td>Symbol, Other</td>    
+    
+  </tr>    
+    
+</table>    
+    
+    
+    
+<h3><a NAME="Bidirectional Category"></a>Bidirectional Category</h3>    
+    
+    
+    
+<p>Please refer to Chapter 3 for an explanation of the algorithm for Bidirectional     
+    
+Behavior and an explanation of the significance of these categories. An up-to-date version     
+    
+can be found on <a HREF="http://www.unicode.org/unicode/reports/tr9/">Unicode Technical     
+    
+Report #9: The Bidirectional Algorithm</a>. These values are normative.</p>    
+    
+    
+    
+<table BORDER="0" CELLPADDING="2">    
+    
+  <tr>    
+    
+    <th VALIGN="TOP" ALIGN="LEFT"><p ALIGN="LEFT">Type</th>    
+    
+    <th VALIGN="TOP" ALIGN="LEFT"><p ALIGN="LEFT">Description</th>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>L</b></td>    
+    
+    <td VALIGN="TOP">Left-to-Right</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>LRE</b></td>    
+    
+    <td VALIGN="TOP">Left-to-Right Embedding</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>LRO</b></td>    
+    
+    <td VALIGN="TOP">Left-to-Right Override</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>R</b></td>    
+    
+    <td VALIGN="TOP">Right-to-Left</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>AL</b></td>    
+    
+    <td VALIGN="TOP">Right-to-Left Arabic</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>RLE</b></td>    
+    
+    <td VALIGN="TOP">Right-to-Left Embedding</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>RLO</b></td>    
+    
+    <td VALIGN="TOP">Right-to-Left Override</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>PDF</b></td>    
+    
+    <td VALIGN="TOP">Pop Directional Format</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>EN</b></td>    
+    
+    <td VALIGN="TOP">European Number</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>ES</b></td>    
+    
+    <td VALIGN="TOP">European Number Separator</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>ET</b></td>    
+    
+    <td VALIGN="TOP">European Number Terminator</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>AN</b></td>    
+    
+    <td VALIGN="TOP">Arabic Number</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>CS</b></td>    
+    
+    <td VALIGN="TOP">Common Number Separator</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>NSM</b></td>    
+    
+    <td VALIGN="TOP">Non-Spacing Mark</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>BN</b></td>    
+    
+    <td VALIGN="TOP">Boundary Neutral</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>B</b></td>    
+    
+    <td VALIGN="TOP">Paragraph Separator</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>S</b></td>    
+    
+    <td VALIGN="TOP">Segment Separator</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>WS</b></td>    
+    
+    <td VALIGN="TOP">Whitespace</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td VALIGN="TOP"><b>ON</b></td>    
+    
+    <td VALIGN="TOP">Other Neutrals</td>    
+    
+  </tr>    
+    
+</table>    
+    
+    
+    
+<h3><a NAME="Character Decomposition"></a>Character Decomposition Mapping</h3>   
+   
+   
+   
+<p>The decomposition is a normative property of a character. The tags supplied with    
+   
+certain decomposition mappings generally indicate formatting information. Where no such    
+   
+tag is given, the mapping is designated as canonical. Conversely, the presence of a    
+   
+formatting tag also indicates that the mapping is a compatibility mapping and not a    
+   
+canonical mapping. In the absence of other formatting information in a compatibility    
+   
+mapping, the tag is used to distinguish it from canonical mappings.</p>   
+   
+   
+   
+<p>In some instances a canonical mapping or a compatibility mapping may consist of a    
+   
+single character. For a canonical mapping, this indicates that the character is a    
+   
+canonical equivalent of another single character. For a compatibility mapping, this    
+   
+indicates that the character is a compatibility equivalent of another single character.    
+   
+The compatibility formatting tags used are:</p>   
+   
+   
+   
+<table BORDER="0" CELLSPACING="2" CELLPADDING="0">   
+   
+  <tr>   
+   
+    <th>Tag</th>   
+   
+    <th><p ALIGN="LEFT">Description</th>   
+   
+  </tr>   
+   
+  <tr>   
+   
+    <td ALIGN="CENTER">&lt;font&gt;&nbsp;&nbsp;</td>   
+   
+    <td>A font variant (e.g. a blackletter form).</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">&lt;noBreak&gt;&nbsp;&nbsp;</td>    
+    
+    <td>A no-break version of a space or hyphen.</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">&lt;initial&gt;&nbsp;&nbsp;</td>    
+    
+    <td>An initial presentation form (Arabic).</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">&lt;medial&gt;&nbsp;&nbsp;</td>    
+    
+    <td>A medial presentation form (Arabic).</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">&lt;final&gt;&nbsp;&nbsp;</td>    
+    
+    <td>A final presentation form (Arabic).</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">&lt;isolated&gt;&nbsp;&nbsp;</td>    
+    
+    <td>An isolated presentation form (Arabic).</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">&lt;circle&gt;&nbsp;&nbsp;</td>    
+    
+    <td>An encircled form.</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">&lt;super&gt;&nbsp;&nbsp;</td>    
+    
+    <td>A superscript form.</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">&lt;sub&gt;&nbsp;&nbsp;</td>    
+    
+    <td>A subscript form.</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">&lt;vertical&gt;&nbsp;&nbsp;</td>    
+    
+    <td>A vertical layout presentation form.</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">&lt;wide&gt;&nbsp;&nbsp;</td>    
+    
+    <td>A wide (or zenkaku) compatibility character.</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">&lt;narrow&gt;&nbsp;&nbsp;</td>    
+    
+    <td>A narrow (or hankaku) compatibility character.</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">&lt;small&gt;&nbsp;&nbsp;</td>    
+    
+    <td>A small variant form (CNS compatibility).</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">&lt;square&gt;&nbsp;&nbsp;</td>    
+    
+    <td>A CJK squared font variant.</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">&lt;fraction&gt;&nbsp;&nbsp;</td>    
+    
+    <td>A vulgar fraction form.</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="CENTER">&lt;compat&gt;&nbsp;&nbsp;</td>    
+    
+    <td>Otherwise unspecified compatibility character.</td>    
+    
+  </tr>    
+    
+</table>    
+    
+    
+    
+<p><b>Reminder: </b>There is a difference between decomposition and decomposition mapping.     
+    
+The decomposition mappings are defined in the UnicodeData, while the decomposition (also     
+    
+termed &quot;full decomposition&quot;) is defined in Chapter 3 to use those mappings  
+<i>    
+   
+recursively.</i>    
+   
+   
+   
+<ul>   
+   
+  <li>The canonical decomposition is formed by recursively applying the canonical mappings,    
+   
+    then applying the canonical reordering algorithm. </li>   
+   
+  <li>The compatibility decomposition is formed by recursively applying the canonical <em>and</em>    
+   
+    compatibility mappings, then applying the canonical reordering algorithm. </li>   
+   
+</ul>   
+   
+   
+   
+<h3><a NAME="Canonical Combining Classes"></a>Canonical Combining Classes</h3>    
+    
+    
+    
+<table BORDER="0" CELLSPACING="2" CELLPADDING="0">    
+    
+  <tr>    
+    
+    <th><p ALIGN="LEFT">Value</th>    
+    
+    <th><p ALIGN="LEFT">Description</th>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">0:</td>    
+    
+    <td>Spacing, split, enclosing, reordrant, and Tibetan subjoined</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">1:</td>    
+    
+    <td>Overlays and interior</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">7:</td>    
+    
+    <td>Nuktas</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">8:</td>    
+    
+    <td>Hiragana/Katakana voicing marks</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">9:</td>    
+    
+    <td>Viramas</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">10:</td>    
+    
+    <td>Start of fixed position classes</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">199:</td>    
+    
+    <td>End of fixed position classes</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">200:</td>    
+    
+    <td>Below left attached</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">202:</td>    
+    
+    <td>Below attached</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">204:</td>    
+    
+    <td>Below right attached</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">208:</td>    
+    
+    <td>Left attached (reordrant around single base character)</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">210:</td>    
+    
+    <td>Right attached</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">212:</td>    
+    
+    <td>Above left attached</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">214:</td>    
+    
+    <td>Above attached</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">216:</td>    
+    
+    <td>Above right attached</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">218:</td>    
+    
+    <td>Below left</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">220:</td>    
+    
+    <td>Below</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">222:</td>    
+    
+    <td>Below right</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">224:</td>    
+    
+    <td>Left (reordrant around single base character)</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">226:</td>    
+    
+    <td>Right</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">228:</td>    
+    
+    <td>Above left</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">230:</td>    
+    
+    <td>Above</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">232:</td>    
+    
+    <td>Above right</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">233:</td>    
+    
+    <td>Double below</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">234:</td>    
+    
+    <td>Double above</td>    
+    
+  </tr>    
+    
+  <tr>    
+    
+    <td ALIGN="RIGHT">240:</td>    
+    
+    <td>Below (iota subscript)</td>    
+    
+  </tr>    
+    
+</table>    
+    
+    
+    
+<p><strong>Note: </strong>some of the combining classes in this list do not currently have     
+    
+members but are specified here for completeness.</p>    
+    
+    
+    
+<h3><a NAME="Decompositions and Normalization"></a>Decompositions and Normalization</h3>    
+    
+    
+    
+<p>Decomposition is specified in Chapter 3. <a href="http://www.unicode.org/unicode/reports/tr15/"><i>Unicode Technical Report #15:     
+    
+Normalization Forms</i></a> specifies the interaction between decomposition and normalization. The     
+    
+most up-to-date version is found on <a HREF="http://www.unicode.org/unicode/reports/tr15/">http://www.unicode.org/unicode/reports/tr15/</a>.     
+    
+That report specifies how the decompositions defined in UnicodeData.txt are used to derive     
+    
+normalized forms of Unicode text.</p>    
+    
+    
+    
+<p>Note that as of the 2.1.9 update of the Unicode Character Database, the decompositions     
+    
+in the UnicodeData.txt file can be used to recursively derive the full decomposition in     
+    
+canonical order, without the need to separately apply canonical reordering. However,     
+    
+canonical reordering of combining character sequences must still be applied in     
+    
+decomposition when normalizing source text which contains any combining marks.</p>    
+    
+    
+    
+<h3><a NAME="Case Mappings"></a>Case Mappings</h3>    
+    
+    
+    
+<p>The case mapping is an informative, default mapping. Case itself, on the other hand,     
+    
+has normative status. Thus, for example, 0041 LATIN CAPITAL LETTER A is normatively     
+    
+uppercase, but its lowercase mapping the 0061 LATIN SMALL LETTER A is informative. The     
+    
+reason for this is that case can be considered to be an inherent property of a particular     
+    
+character (and is usually, but not always, derivable from the presence of the terms     
+    
+&quot;CAPITAL&quot; or &quot;SMALL&quot; in the character name), but case mappings between     
+    
+characters are occasionally influenced by local conventions. For example, certain     
+    
+languages, such as Turkish, German, French, or Greek may have small deviations from the     
+    
+default mappings listed in UnicodeData.</p>    
+    
+    
+    
+<p>In addition to uppercase and lowercase, because of the inclusion of certain composite     
+    
+characters for compatibility, such as 01F1 LATIN CAPITAL LETTER DZ, there is a third case,     
+    
+called <i>titlecase</i>, which is used where the first letter of a word is to be     
+    
+capitalized (e.g. UPPERCASE, Titlecase, lowercase). An example of such a titlecase letter     
+    
+is 01F2 LATIN CAPITAL LETTER D WITH SMALL LETTER Z.</p>    
+    
+    
+    
+<p>The uppercase, titlecase and lowercase fields are only included for characters that     
+    
+have a single corresponding character of that type. Composite characters (such as     
+    
+&quot;339D SQUARE CM&quot;) that do not have a single corresponding character of that type     
+    
+can be cased by decomposition.</p>    
+    
+    
+    
+<p>For compatibility with existing parsers, UnicodeData only contains case mappings for     
+    
+characters where they are one-to-one mappings; it also omits information about     
+    
+context-sensitive case mappings. Information about these special cases can be found in a     
+    
+separate data file, SpecialCasing.txt,     
+    
+which has been added starting with the 2.1.8 update to the Unicode data files.     
+    
+SpecialCasing.txt contains additional informative case mappings that are either not     
+    
+one-to-one or which are context-sensitive.</p>    
+    
+    
+    
+<h2><a NAME="Property Invariants"></a>Property Invariants</h2>    
+    
+    
+    
+<p>Values in UnicodeData.txt are subject to correction as errors are found; however, some     
+    
+characteristics of the categories themselves can be considered invariants. Applications     
+    
+may wish to take these invariants into account when choosing how to implement character     
+    
+properties. The following is a partial list of known invariants for the Unicode Character     
+    
+Database.</p>    
+    
+    
+    
+<h4>Database Fields</h4>    
+    
+    
+    
+<ul>    
+    
+  <li>The number of fields in UnicodeData.txt is fixed. </li>    
+    
+  <li>The order of the fields is also fixed. <ul>    
+    
+      <li>Any additional information about character properties to be added in the future will     
+    
+        appear in separate data tables, rather than being added on to the existing table or by     
+    
+        subdivision or reinterpretation of existing fields. </li>    
+    
+    </ul>    
+    
+  </li>    
+    
+</ul>    
+    
+    
+    
+<h4>General Category</h4>    
+    
+    
+    
+<ul>    
+    
+  <li>There will never be more than 32 General Category values. <ul>    
+    
+      <li>It is very unlikely that the Unicode Technical Committee will subdivide the General     
+    
+        Category partition any further, since that can cause implementations to misbehave. Because     
+    
+        the General Category is limited to 32 values, 5 bits can be used to represent the     
+    
+        information, and a 32-bit integer can be used as a bitmask to represent arbitrary sets of     
+    
+        categories. </li>    
+    
+    </ul>    
+    
+  </li>    
+    
+</ul>    
+    
+    
+    
+<h4>Combining Classes</h4>    
+    
+    
+    
+<ul>    
+    
+  <li>Combining classes are limited to the values 0 to 255. <ul>    
+    
+      <li>In practice, there are far fewer than 256 values used. Implementations may take     
+    
+        advantage of this fact for compression, since only the ordering of the non-zero values     
+    
+        matters for the Canonical Reordering Algorithm. It is possible for up to 256 values to be     
+    
+        used in the future; however, UTC decisions in the future may restrict the number of values     
+    
+        to 128, since this has implementation advantages. [Signed bytes can be used without     
+    
+        widening to ints in Java, for example.] </li>    
+    
+    </ul>    
+    
+  </li>    
+    
+  <li>All characters other than those of General Category M* have the combining class 0. <ul>    
+    
+      <li>Currently, all characters other than those of General Category Mn have the value 0.     
+    
+        However, some characters of General Category Me or Mc may be given non-zero values in the     
+    
+        future. </li>    
+    
+      <li>The precise values above the value 0 are not invariant--only the relative ordering is     
+    
+        considered normative. For example, it is not guaranteed in future versions that the class     
+    
+        of U+05B4 will be precisely 14. </li>    
+    
+    </ul>    
+    
+  </li>    
+    
+</ul>    
+    
+    
+    
+<h4>Case</h4>    
+    
+    
+    
+<ul>    
+    
+  <li>Characters of type Lu, Lt, or Ll are called <i>cased</i>. All characters with an Upper,     
+    
+    Lower, or Titlecase mapping are cased characters. <ul>    
+    
+      <li>However, characters with the General Categories of Lu, Ll, or Lt may not always have     
+    
+        case mappings, and case mappings may vary by locale. (See     
+    
+        ftp://ftp.unicode.org/Public/UNIDATA/SpecialCasing.txt). </li>    
+    
+    </ul>    
+    
+  </li>    
+    
+</ul>    
+    
+    
+    
+<h4>Canonical Decomposition</h4>    
+    
+    
+    
+<ul>    
+    
+  <li>Canonical mappings are always in canonical order. </li>    
+    
+  <li>Canonical mappings have only the first of a pair possibly further decomposing. </li>    
+    
+  <li>Canonical decompositions are &quot;transparent&quot; to other character data: <ul>    
+    
+      <li><tt>BIDI(a) = BIDI(principal(canonicalDecomposition(a))</tt> </li>    
+    
+      <li><tt>Category(a) = Category(principal(canonicalDecomposition(a))</tt> </li>    
+    
+      <li><tt>CombiningClass(a) = CombiningClass(principal(canonicalDecomposition(a))</tt><br>    
+    
+        where principal(a) is the first character not of type Mn, or the first character if all     
+    
+        characters are of type Mn. </li>    
+    
+    </ul>    
+    
+  </li>    
+    
+  <li>However, because there are sometimes missing case pairs, and because of some legacy     
+    
+    characters, it is only generally true that: <ul>    
+    
+      <li><tt>upper(canonicalDecomposition(a)) = canonicalDecomposition(upper(a))</tt> </li>    
+    
+      <li><tt>lower(canonicalDecomposition(a)) = canonicalDecomposition(lower(a))</tt> </li>    
+    
+      <li><tt>title(canonicalDecomposition(a)) = canonicalDecomposition(title(a))</tt> </li>    
+    
+    </ul>    
+    
+  </li>    
+    
+</ul>    
+    
+    
+    
+<h2><a NAME="Modification History"></a>Modification History</h2>    
+    
+    
+    
+<p>This section provides a summary of the changes between update versions of the Unicode     
+    
+Standard.</p>    
+    
+    
+    
+<h3><a href="http://www.unicode.org/unicode/standard/versions/enumeratedversions.html#Unicode 3.0.0"> Unicode 3.0.0</a></h3>    
+    
+    
+    
+<p>Modifications made for Version 3.0.0 of UnicodeData.txt include many new characters and     
+    
+a number of property changes. These are summarized in Appendex D of <em>The Unicode     
+    
+Standard, Version 3.0.</em></p>    
+    
+    
+    
+<h3><a HREF="http://www.unicode.org/unicode/standard/versions/enumeratedversions.html#Unicode 2.1.9">Unicode 2.1.9</a> </h3>    
+    
+    
+    
+<p>Modifications made for Version 2.1.9 of UnicodeData.txt include:     
+    
+    
+    
+<ul>    
+    
+  <li>Corrected combining class for U+05AE HEBREW ACCENT ZINOR. </li>    
+    
+  <li>Corrected combining class for U+20E1 COMBINING LEFT RIGHT ARROW ABOVE </li>    
+    
+  <li>Corrected combining class for U+0F35 and U+0F37 to 220. </li>    
+    
+  <li>Corrected combining class for U+0F71 to 129. </li>    
+    
+  <li>Added a decomposition for U+0F0C TIBETAN MARK DELIMITER TSHEG BSTAR. </li>    
+    
+  <li>Added&nbsp; decompositions for several Greek symbol letters: U+03D0..U+03D2, U+03D5,     
+    
+    U+03D6, U+03F0..U+03F2. </li>    
+    
+  <li>Removed&nbsp; decompositions from the conjoining jamo block: U+1100..U+11F8. </li>    
+    
+  <li>Changes to decomposition mappings for some Tibetan vowels for consistency in     
+    
+    normalization. (U+0F71, U+0F73, U+0F77, U+0F79, U+0F81) </li>    
+    
+  <li>Updated the decomposition mappings for several Vietnamese characters with two diacritics     
+    
+    (U+1EAC, U+1EAD, U+1EB6, U+1EB7, U+1EC6, U+1EC7, U+1ED8, U+1ED9), so that the recursive     
+    
+    decomposition can be generated directly in canonically reordered form (not a normative     
+    
+    change). </li>    
+    
+  <li>Updated the decomposition mappings for several Arabic compatibility characters involving     
+    
+    shadda (U+FC5E..U+FC62, U+FCF2..U+FCF4), and two Latin characters (U+1E1C, U+1E1D), so     
+    
+    that the decompositions are generated directly in canonically reordered form (not a     
+    
+    normative change). </li>    
+    
+  <li>Changed BIDI category for: U+00A0 NO-BREAK SPACE, U+2007 FIGURE SPACE, U+2028 LINE     
+    
+    SEPARATOR. </li>    
+    
+  <li>Changed BIDI category for extenders of General Category Lm: U+3005, U+3021..U+3035,     
+    
+    U+FF9E, U+FF9F. </li>    
+    
+  <li>Changed General Category and BIDI category for the Greek numeral signs: U+0374, U+0375. </li>    
+    
+  <li>Corrected General Category for U+FFE8 HALFWIDTH FORMS LIGHT VERTICAL. </li>    
+    
+  <li>Added Unicode 1.0 names for many Tibetan characters (informative). </li>    
+    
+</ul>    
+    
+    
+    
+<h3><a HREF="http://www.unicode.org/unicode/standard/versions/enumeratedversions.html#Unicode 2.1.8">Unicode 2.1.8</a> </h3>    
+    
+    
+    
+<p>Modifications made for Version 2.1.8 of UnicodeData.txt include:     
+    
+    
+    
+<ul>    
+    
+  <li>Added combining class 240 for U+0345 COMBINING GREEK YPOGEGRAMMENI so that     
+    
+    decompositions involving iota subscript are derivable directly in canonically reordered     
+    
+    form; this also has a bearing on simplification of casing of polytonic Greek. </li>    
+    
+  <li>Changes in decompositions related to Greek tonos. These result from the clarification     
+    
+    that monotonic Greek &quot;tonos&quot; should be equated with U+0301 COMBINING ACUTE,     
+    
+    rather than with U+030D COMBINING VERTICAL LINE ABOVE. (All Greek characters in the Greek     
+    
+    block involving &quot;tonos&quot;; some Greek characters in the polytonic Greek in the     
+    
+    1FXX block.) </li>    
+    
+  <li>Changed decompositions involving dialytika tonos. (U+0390, U+03B0) </li>    
+    
+  <li>Changed ternary decompositions to binary. (U+0CCB, U+FB2C, U+FB2D) These changes     
+    
+    simplify normalization. </li>    
+    
+  <li>Removed canonical decomposition for Latin Candrabindu. (U+0310) </li>    
+    
+  <li>Corrected error in canonical decomposition for U+1FF4. </li>    
+    
+  <li>Added compatibility decompositions to clarify collation tables. (U+2100, U+2101, U+2105,     
+    
+    U+2106, U+1E9A) </li>    
+    
+  <li>A series of general category changes to assist the convergence of of Unicode definition     
+    
+    of identifier with ISO TR 10176: <ul>    
+    
+      <li>So &gt; Lo: U+0950, U+0AD0, U+0F00, U+0F88..U+0F8B </li>    
+    
+      <li>Po &gt; Lo: U+0E2F, U+0EAF, U+3006 </li>    
+    
+      <li>Lm &gt; Sk: U+309B, U+309C </li>    
+    
+      <li>Po &gt; Pc: U+30FB, U+FF65 </li>    
+    
+      <li>Ps/Pe &gt; Mn: U+0F3E, U+0F3F </li>    
+    
+    </ul>    
+    
+  </li>    
+    
+  <li>A series of bidi property changes for consistency. <ul>    
+    
+      <li>L &gt; ET: U+09F2, U+09F3 </li>    
+    
+      <li>ON &gt; L: U+3007 </li>    
+    
+      <li>L &gt; ON: U+0F3A..U+0F3D, U+037E, U+0387 </li>    
+    
+    </ul>    
+    
+  </li>    
+    
+  <li>Add case mapping: U+01A6 &lt;-&gt; U+0280 </li>    
+    
+  <li>Updated symmetric swapping value for guillemets: U+00AB, U+00BB, U+2039, U+203A. </li>    
+    
+  <li>Changes to combining class values. Most Indic fixed position class non-spacing marks     
+    
+    were changed to combining class 0. This fixes some inconsistencies in how canonical     
+    
+    reordering would apply to Indic scripts, including Tibetan. Indic interacting top/bottom     
+    
+    fixed position classes were merged into single (non-zero) classes as part of this change.     
+    
+    Tibetan subjoined consonants are changed from combining class 6 to combining class 0. Thai     
+    
+    pinthu (U+0E3A) moved to combining class 9. Moved two Devanagari stress marks into generic     
+    
+    above and below combining classes (U+0951, U+0952). </li>    
+    
+  <li>Corrected placement of semicolon near symmetric swapping field. (U+FA0E, etc., scattered     
+    
+    positions to U+FA29) </li>    
+    
+</ul>    
+    
+    
+    
+<h3>Version 2.1.7</h3>    
+    
+    
+    
+<p><i>This version was for internal change tracking only, and never publicly released.</i></p>    
+    
+    
+    
+<h3>Version 2.1.6</h3>    
+    
+    
+    
+<p><i>This version was for internal change tracking only, and never publicly released.</i></p>    
+    
+    
+    
+<h3><a HREF="http://www.unicode.org/unicode/standard/versions/enumeratedversions.html#Unicode 2.1.5">Unicode 2.1.5</a> </h3>    
+    
+    
+    
+<p>Modifications made for Version 2.1.5 of UnicodeData.txt include:     
+    
+    
+    
+<ul>    
+    
+  <li>Changed decomposition for U+FF9E and U+FF9F so that correct collation weighting will     
+    
+    automatically result from the canonical equivalences. </li>    
+    
+  <li>Removed canonical decompositions for U+04D4, U+04D5, U+04D8, U+04D9, U+04E0, U+04E1,     
+    
+    U+04E8, U+04E9 (the implication being that no canonical equivalence is claimed between     
+    
+    these 8 characters and similar Latin letters), and updated 4 canonical decompositions for     
+    
+    U+04DB, U+04DC, U+04EA, U+04EB to reflect the implied difference in the base character. </li>    
+    
+  <li>Added Pi, and Pf categories and assigned the relevant quotation marks to those     
+    
+    categories, based on the Unicode Technical Corrigendum on Quotation Characters. </li>    
+    
+  <li>Updating of many bidi properties, following the advice of the ad hoc committee on bidi,     
+    
+    and to make the bidi properties of compatibility characters more consistent. </li>    
+    
+  <li>Changed category of several Tibetan characters: U+0F3E, U+0F3F, U+0F88..U+0F8B to make     
+    
+    them non-combining, reflecting the combined opinion of Tibetan experts. </li>    
+    
+  <li>Added case mapping for U+03F2. </li>    
+    
+  <li>Corrected case mapping for U+0275. </li>    
+    
+  <li>Added titlecase mappings for U+03D0, U+03D1, U+03D5, U+03D6, U+03F0.. U+03F2. </li>    
+    
+  <li>Corrected compatibility label for U+2121. </li>    
+    
+  <li>Add specific entries for all the CJK compatibility ideographs, U+F900..U+FA2D, so the     
+    
+    canonical decomposition for each (the URO character it is equivalent to) can be carried in     
+    
+    the database. </li>    
+    
+</ul>    
+    
+    
+    
+<h3>Version 2.1.4</h3>    
+    
+    
+    
+<p><i>This version was for internal change tracking only, and never publicly released.</i></p>    
+    
+    
+    
+<h3>Version 2.1.3</h3>    
+    
+    
+    
+<p><i>This version was for internal change tracking only, and never publicly released.</i></p>    
+    
+    
+    
+<h3><a HREF="http://www.unicode.org/unicode/standard/versions/enumeratedversions.html#Unicode 2.1.2">Unicode 2.1.2</a> </h3>    
+    
+    
+    
+<p>Modifications made in updating UnicodeData.txt to Version 2.1.2 for the Unicode     
+    
+Standard, Version 2.1 (from Version 2.0) include:     
+    
+    
+    
+<ul>    
+    
+  <li>Added two characters (U+20AC and U+FFFC). </li>    
+    
+  <li>Amended bidi properties for U+0026, U+002E, U+0040, U+2007. </li>    
+    
+  <li>Corrected case mappings for U+018E, U+019F, U+01DD, U+0258, U+0275, U+03C2, U+1E9B. </li>    
+    
+  <li>Changed combining order class for U+0F71. </li>    
+    
+  <li>Corrected canonical decompositions for U+0F73, U+1FBE. </li>    
+    
+  <li>Changed decomposition for U+FB1F from compatibility to canonical. </li>    
+    
+  <li>Added compatibility decompositions for U+FBE8, U+FBE9, U+FBF9..U+FBFB. </li>    
+    
+  <li>Corrected compatibility decompositions for U+2469, U+246A, U+3358. </li>    
+    
+</ul>    
+    
+    
+    
+<h3>Version 2.1.1</h3>    
+    
+    
+    
+<p><i>This version was for internal change tracking only, and never publicly released.</i></p>    
+    
+    
+    
+<h3><a HREF="http://www.unicode.org/unicode/standard/versions/enumeratedversions.html#Unicode 2.0.0">Unicode 2.0.0</a> </h3>    
+    
+    
+    
+<p>The modifications made in updating UnicodeData.txt for the Unicode     
+    
+Standard, Version 2.0 include:     
+    
+    
+    
+<ul>    
+    
+  <li>Fixed decompositions with TONOS to use correct NSM: 030D. </li>    
+    
+  <li>Removed old Hangul Syllables; mapping to new characters are in a separate table. </li>    
+    
+  <li>Marked compatibility decompositions with additional tags. </li>    
+    
+  <li>Changed old tag names for clarity. </li>    
+    
+  <li>Revision of decompositions to use first-level decomposition, instead of maximal     
+    
+    decomposition. </li>    
+    
+  <li>Correction of all known errors in decompositions from earlier versions. </li>    
+    
+  <li>Added control code names (as old Unicode names). </li>    
+    
+  <li>Added Hangul Jamo decompositions. </li>    
+    
+  <li>Added Number category to match properties list in book. </li>    
+    
+  <li>Fixed categories of Koranic Arabic marks. </li>    
+    
+  <li>Fixed categories of precomposed characters to match decomposition where possible. </li>    
+    
+  <li>Added Hebrew cantillation marks and the Tibetan script. </li>    
+    
+  <li>Added place holders for ranges such as CJK Ideographic Area and the Private Use Area. </li>    
+    
+  <li>Added categories Me, Sk, Pc, Nl, Cs, Cf, and rectified a number of mistakes in the     
+    
+    database. </li>    
+    
+</ul>    
+    
+</body>    
+    
+</html>    
+