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<h1>UNICODE CHARACTER DATABASE<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">1999-09-11</td>

  </tr>

  <tr>

    <td valign="TOP" width="144">This Version</td>

    <td valign="TOP"><a href="ftp://ftp.unicode.org/Public/3.0-Update/UnicodeCharacterDatabase-3.0.0.html">ftp://ftp.unicode.org/Public/3.0-Update/UnicodeCharacterDatabase-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/UnicodeCharacterDatabase-3.0.0.html">ftp://ftp.unicode.org/Public/3.0-Update/UnicodeCharacterDatabase-3.0.0.html</a></td>

  </tr>

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<p align="center">Copyright © 1995-1999 Unicode, Inc. All Rights reserved.</p>  
  
<h2>Disclaimer</h2>  
  
<p>The Unicode Character Database is provided as is by Unicode, Inc. No claims   
  
are made as to fitness for any particular purpose. No warranties of any kind are   
  
expressed or implied. The recipient agrees to determine applicability of   
  
information provided. If this file has been purchased on magnetic or optical   
  
media from Unicode, Inc., the sole remedy for any claim will be exchange of   
  
defective media within 90 days of receipt.</p>  
  
<p>This disclaimer is applicable for all other data files accompanying the   
  
Unicode Character Database, some of which have been compiled by the Unicode   
  
Consortium, and some of which have been supplied by other sources.</p>  
  
<h2>Limitations on Rights to Redistribute This Data</h2>  
  
<p>Recipient is granted the right to make copies in any form for internal   
  
distribution and to freely use the information supplied in the creation of   
  
products supporting the Unicode<sup>TM</sup> Standard. The files in the Unicode   
  
Character Database can be redistributed to third parties or other organizations   
  
(whether for profit or not) as long as this notice and the disclaimer notice are   
  
retained. Information can be extracted from these files and used in   
  
documentation or programs, as long as there is an accompanying notice indicating   
  
the source.</p>  
  
<h2>Introduction</h2>  
  
<p>The Unicode Character Database is a set of files that define the Unicode   
  
character properties and internal mappings. For more information about character   
  
properties and mappings, see <i><a href="http://www.unicode.org/unicode/uni2book/u2.html">The   
  
Unicode Standard</a></i>.</p>  
  
<p>The Unicode Character Database has been updated to reflect Version 3.0 of the   
  
Unicode Standard, with many characters added to those published in Version 2.0.   
  
A number of corrections have also been made to case mappings or other errors in   
  
the database noted since the publication of Version 2.0. Normative bidirectional   
  
properties have also been modified to reflect decisions of the Unicode Technical   
  
Committee.</p>  
  
<p>For more information on versions of the Unicode Standard and how to reference   
  
them, see <a href="http://www.unicode.org/unicode/standard/versions/">http://www.unicode.org/unicode/standard/versions/</a>.</p>  
  
<h2>Conformance</h2>  
  
<p>Character properties may be either normative or informative. <i>Normative</i>   
  
means that implementations that claim conformance to the Unicode Standard (at a   
  
particular version) and which make use of a particular property or field must   
  
follow the specifications of the standard for that property or field in order to   
  
be conformant. The term <i>normative</i> when applied to a property or field of   
  
the Unicode Character Database, does <i>not</i> mean that the value of that   
  
field will never change. Corrections and extensions to the standard in the   
  
future may require minor changes to normative values, even though the Unicode   
  
Technical Committee strives to minimize such changes. An<i> informative </i>property   
  
or field is strongly recommended, but a conformant implementation is free to use   
  
or change such values as it may require while still being conformant to the   
  
standard. Particular implementations may choose to override the properties and   
  
mappings that are not normative. In that case, it is up to the implementer to   
  
establish a protocol to convey that information.</p>  
  
<h2>Files</h2>  
  
<p>The following summarizes the files in the Unicode Character Database. &nbsp;For   
  
more information about these files, see the referenced technical report or   
  
section of Unicode Standard, Version 3.0.</p>  
  
<p><b>UnicodeData.txt (Chapter 4)</b>  
  
<ul>  
  
  <li>The main file in the Unicode Character Database.</li>  
  
  <li>For detailed information on the format, see <a href="UnicodeData.html">UnicodeData.html</a>.   
  
    This file also characterizes which properties are normative and which are   
  
    informative.</li>  
  
</ul>  
  
<p><b>PropList.txt (Chapter 4)</b>  
  
<ul>  
  
  <li>Additional informative properties list: <i>Alphabetic, Ideographic,</i>   
  
    and <i>Mathematical</i>, among others.</li>  
  
</ul>  
  
<p><b>SpecialCasing.txt (Chapter 4)</b>  
  
<ul>  
  
  <li>List of informative special casing properties, including one-to-many   
  
    mappings such as SHARP S =&gt; &quot;SS&quot;, and locale-specific mappings,   
  
    such as for Turkish <i>dotless i</i>.</li>  
  
</ul>  
  
<p><b>Blocks.txt (Chapter 14)</b>  
  
<ul>  
  
  <li>List of normative block names.</li>  
  
</ul>  
  
<p><b>Jamo.txt (Chapter 4)</b>  
  
<ul>  
  
  <li>List of normative Jamo short names, used in deriving HANGUL SYLLABLE names   
  
    algorithmically.</li>  
  
</ul>  
  
<p><b>ArabicShaping.txt (Section 8.2)</b>  
  
<ul>  
  
  <li>Basic Arabic and Syriac character shaping properties, such as initial,   
  
    medial and final shapes. These properties are normative for minimal shaping   
  
    of Arabic and Syriac. </li>  
  
</ul>  
  
<p><b>NamesList.txt (Chapter 14)</b>  
  
<ul>  
  
  <li>This file duplicates some of the material in the UnicodeData file, and   
  
    adds informative annotations uses in the character charts, as printed in the   
  
    Unicode Standard. </li>  
  
  <li><b>Note: </b>The information in NamesList.txt and Index.txt files matches   
  
    the appropriate version of the book. Changes in the Unicode Character   
  
    Database since then may not be reflected in these files, since they are   
  
    primarily of archival interest.</li>  
  
</ul>  
  
<p><b>Index.txt (Chapter 14)</b>  
  
<ul>  
  
  <li>Informative index to Unicode characters, as printed in the Unicode   
  
    Standard</li>  
  
  <li><b>Note: </b>The information in NamesList.txt and Index.txt files matches   
  
    the appropriate version of the book. Changes in the Unicode Character   
  
    Database since then may not be reflected in these files, since they are   
  
    primarily of archival interest.</li>  
  
</ul>  
  
<p><b>CompositionExclusions.txt (<a href="http://www.unicode.org/unicode/reports/tr15/">UTR#15   
  
Unicode Normalization Forms</a>)</b>  
  
<ul>  
  
  <li>Normative properties for normalization.</li>  
  
</ul>  
  
<p><b>LineBreak.txt (<a href="http://www.unicode.org/unicode/reports/tr14/">UTR   
  
#14: Line Breaking Properties</a>)</b>  
  
<ul>  
  
  <li>Normative and informative properties for line breaking. To see which   
  
    properties are informative and which are normative, consult UTR#14.</li>  
  
</ul>  
  
<p><b>EastAsianWidth.txt (<a href="http://www.unicode.org/unicode/reports/tr11/">UTR   
  
#11: East Asian Character Width</a>)</b>  
  
<ul>  
  
  <li>Informative properties for determining the choice of wide vs. narrow   
  
    glyphs in East Asian contexts.</li>  
  
</ul>  
  
<p><b>diffXvY.txt</b>  
  
<ul>  
  
  <li>Mechanically-generated informative files containing accumulated   
  
    differences between successive versions of UnicodeData.txt</li>  
  
</ul>  
  
  
  
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