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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>
</table>
<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. 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 => "SS", 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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