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          <td class="icon"><a href="http://www.unicode.org"><img border="0"
            src="http://www.unicode.org/webscripts/logo60s2.gif" align="middle"
            alt="[Unicode]" width="34" height="33"></a>&nbsp;&nbsp;<a
            class="bar" href="UnicodeCharacterDatabase.html">Unicode Character 
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<h1>UNICODE CHARACTER DATABASE</h1>
<table border="1" cellspacing="2" cellpadding="0" height="87" width="100%">
  <tr>
    <td valign="TOP" width="144">Revision</td>
    <td valign="TOP">3.1.0</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">2001-02-28</td>
  </tr>
  <tr>
    <td valign="TOP" width="144">This Version</td>
    <td valign="TOP"><a
      href="http://http://www.unicode.org/Public/3.1-Update/UnicodeCharacterDatabase-3.1.0.html">http://www.unicode.org/Public/3.1-Update/UnicodeCharacterDatabase-3.1.0.html</a></td>
  </tr>
  <tr>
    <td valign="TOP" width="144">Previous Version</td>
    <td valign="TOP"><a
      href="http://www.unicode.org/Public/3.0-Update1/UnicodeCharacterDatabase-3.0.1.html">http://www.unicode.org/Public/3.0-Update1/UnicodeCharacterDatabase-3.0.1.html</a></td>
  </tr>
  <tr>
    <td valign="TOP" width="144">Latest Version</td>
    <td valign="TOP"><a
      href="http://www.unicode.org/Public/UNIDATA/UnicodeCharacterDatabase.html">http://www.unicode.org/Public/UNIDATA/UnicodeCharacterDatabase.html</a></td>
  </tr>
</table>
<h3><br>
S<i>ummary</i></h3>
<blockquote>
  <p><i>This document describes the format and content of the Unicode Character 
  Database (UCD)</i></p>
</blockquote>
<h3><i>Status</i></h3>
<blockquote>
  <p><i>The file and the files described herein are part of the Unicode 
  Character Database and are governed by the <a href="#UCD_Terms">UCD Terms of 
  Use</a> given below.</i></p>
  <p><i>The <a href="#References">References</a> provide related information 
  that is useful in understanding this document.</i></p>
  <p><i><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 <a
  href="http://www.unicode.org/unicode/standard/versions/Unicode3.0.html">The 
  Unicode Standard</a>. All chapter references are to Version 3.1.0 of the 
  standard.</i></p>
</blockquote>
<h2>Introduction</h2>
<p>The Unicode Character Database (UCD) is a set of files that define the 
Unicode character properties and internal mappings. This document describes the 
files that are part of <a href="http://www.unicode.org/unicode/reports/tr27/">The 
Unicode Standard, Version 3.1</a> [<a href="#U3.1">U3.1</a>]. The main changes 
in this version are:</p>
<ul>
  <li>All of the data files have been updated to account for the large number of 
    additional characters in Unicode 3.1.</li>
  <li>PropList.txt has been extensively reorganized and reformatted.</li>
  <li>Scripts.txt has been added to the UCD.</li>
  <li>A large number of informative derived property files have been added to 
    the UCD.</li>
</ul>
<p><i>Files in the UCD use a common format unless otherwise specified. For 
details, see <a href="#UCD_File_Format">UCD File Format</a>.</i></p>
<h2><a name="Conformance">Conformance</a></h2>
<p>For information on the meaning and application of the terms normative and 
informative, see &quot;Chapter 4, Character Properties (revision)&quot; in <a
href="http://www.unicode.org/unicode/reports/tr27/#conformance">UAX #27, Unicode 
3.1</a>.</p>
<p>Some informative data files contain derived properties, properties that can 
be derived from other properties in the UCD. The derived properties that are 
computed from solely normative properties are themselves normative, while the 
others are informative.</p>
<h2>UCD Files</h2>
<p>The following table summarizes the files in the Unicode Character Database. 
&nbsp;For more information about these files, see the referenced technical 
report(s), files, or section of Unicode Standard, Version 3.1.</p>
<table border="1" cellspacing="0" cellpadding="4">
  <tr>
    <th>&quot;.txt&quot; File</th>
    <th>Description</th>
    <th align="center">N/I</th>
    <th>Summary</th>
  </tr>
  <tr>
    <td>ArabicShaping</td>
    <td>Section 8.2</td>
    <td align="center">N</td>
    <td>Basic Arabic and Syriac character shaping properties, such as initial, 
      medial and final shapes.</td>
  </tr>
  <tr>
    <td>BidiMirroring</td>
    <td><a href="http://www.unicode.org/unicode/reports/tr9/">UAX #9</a></td>
    <td align="center">I</td>
    <td>Properties for substituting characters in an implementation of 
      bidirectional mirroring.</td>
  </tr>
  <tr>
    <td>Blocks</td>
    <td>Chapter 14</td>
    <td align="center">N</td>
    <td>List of block names.</td>
  </tr>
  <tr>
    <td>CaseFolding</td>
    <td><a href="http://www.unicode.org/unicode/reports/tr21/">UTR #21</a></td>
    <td align="center">N</td>
    <td>Mapping from characters to their case-folded forms. This is an 
      informative file containing normative derived properties.
      <p><i>Derived from UnicodeData and SpecialCasing.</i></p>
    </td>
  </tr>
  <tr>
    <td>CompositionExclusions</td>
    <td><a href="http://www.unicode.org/unicode/reports/tr15/">UAX #15</a></td>
    <td align="center">N</td>
    <td>Properties for normalization.</td>
  </tr>
  <tr>
    <td><i>DerivedXXX</i></td>
    <td>DerivedProperties.html</td>
    <td align="center">N/I</td>
    <td>Various informative derived files, described in the documentation file. 
      Some of the derived properties are normative and some are informative.</td>
  </tr>
  <tr>
    <td>EastAsianWidth</td>
    <td><a href="http://www.unicode.org/unicode/reports/tr11/">UAX #11</a></td>
    <td align="center">I</td>
    <td>Properties for determining the choice of wide vs. narrow glyphs in East 
      Asian contexts.</td>
  </tr>
  <tr>
    <td>Index</td>
    <td>Chapter 14</td>
    <td align="center">I</td>
    <td>Index to Unicode characters, as printed in the Unicode Standard. (See <a
      href="#Update_Note">Update Note</a>.)</td>
  </tr>
  <tr>
    <td>Jamo</td>
    <td>Chapter 4</td>
    <td align="center">N</td>
    <td>List of Jamo short names, used in deriving HANGUL SYLLABLE names 
      algorithmically.</td>
  </tr>
  <tr>
    <td>LineBreak</td>
    <td><a href="http://www.unicode.org/unicode/reports/tr14/">UAX #14</a></td>
    <td align="center">N/I</td>
    <td>Properties for line breaking.</td>
  </tr>
  <tr>
    <td>NamesList</td>
    <td>Chapter 14</td>
    <td align="center">I</td>
    <td>This file duplicates some of the material in the UnicodeData file, and 
      adds annotations used in the character charts.</td>
  </tr>
  <tr>
    <td>NormalizationTest</td>
    <td><a href="http://www.unicode.org/unicode/reports/tr15/">UAX #15</a></td>
    <td align="center">N</td>
    <td>Test file for conformance to Unicode Normalization Forms.</td>
  </tr>
  <tr>
    <td>PropList</td>
    <td>PropList.html</td>
    <td align="center">N/I</td>
    <td>Extended character properties</td>
  </tr>
  <tr>
    <td>Scripts</td>
    <td><a href="http://www.unicode.org/unicode/reports/tr24/">UTR #24</a></td>
    <td align="center">I</td>
    <td>Default scripts values for use in regular expressions.</td>
  </tr>
  <tr>
    <td>SpecialCasing</td>
    <td>Chapter 4,<br>
      <a href="http://www.unicode.org/unicode/reports/tr21/">UTR #21</a></td>
    <td align="center">N</td>
    <td>List of properties required for full case mapping.</td>
  </tr>
  <tr>
    <td>UnicodeData</td>
    <td>UnicodeData.html,<br>
      Chapter 4,<br>
      <a href="http://www.unicode.org/unicode/reports/tr21/">UTR #21</a>,<br>
      <a href="http://www.unicode.org/unicode/reports/tr15/">UAX #15</a></td>
    <td align="center">N/I</td>
    <td>The main file in the UCD.&nbsp;</td>
  </tr>
  <tr>
    <td>Unihan</td>
    <td>Unihan.txt</td>
    <td align="center">N/I</td>
    <td>Extended properties of Han (CJK) characters. (See <a href="#Format_Note">Format 
      Note</a>.)</td>
  </tr>
</table>
<blockquote>
  <p><b><a name="Update_Note">Update Note</a>: </b>The information in 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.</p>
  <p><b><a name="Format_Note">Format Note</a>: </b>The file data format differs 
  from the standard format, and is described in the header of the file. The 
  header also describes which properties are informative and which are 
  normative.</p>
</blockquote>
<h2><a name="UCD_File_Format">UCD File Format</a></h2>
<p>Files in the UCD use the following format, unless otherwise specified.</p>
<ul>
  <li>Each line of data consists of fields separated by semicolons. The fields 
    are numbered starting with zero. Code points are expressed as hexadecimal 
    numbers with four to six digits. They are written without &quot;U+&quot;. 
    Within a sequence of code points, spaces are used for separation. Leading 
    and trailing spaces within a field are not significant.</li>
</ul>
<ul>
  <li>The first field (0) of each line in the Unicode Character Database files 
    represents a code point or range. The remaining fields (1..n) are properties 
    associated with that code point.</li>
</ul>
<ul>
  <li>A range of code points is specified by the form &quot;X..Y&quot;. Each 
    code point from X to Y has the associated properties. For example:</li>
</ul>
<blockquote>
  <pre>0000..007F; Basic Latin
0080..00FF; Latin-1 Supplement

1680      ; White_space # Zs OGHAM SPACE MARK
2000..200A; White_space # Zs [11] EN QUAD..HAIR SPACE</pre>
</blockquote>
<ul>
  <li>Hash marks (&quot;#&quot;) are used to indicate comments: all characters 
    from the hash mark to the end of the line are comments, and disregarded when 
    parsing data. In many files, the comments on data lines use a common format.</li>
</ul>
<blockquote>
  <pre>00BC..00BE ; numeric # No [3] VULGAR FRACTION ONE QUARTER..VULGAR FRACTION THREE QUARTERS</pre>
</blockquote>
<ul>
  <li>The first part of the comment is the UCD general category. The symbol 
    &quot;L&amp;&quot; indicates characters of type Lu, Ll, or Lt. The code 
    point ranges are calculated so that they all have the same General Category 
    (or L&amp;). While this results in more ranges than are strictly necessary, 
    it makes the contents of the ranges clearer. The second part of the comment 
    (in square brackets), indicates the number of items in a range, if there is 
    one. The third part is the name of the character in field zero: if it is a 
    range, then the character names for the ends of the range are separated by 
    &quot;..&quot;.</li>
</ul>
<p>However, the comments are purely informational, and may change format or be 
omitted in the future. They should not be parsed for content.</p>
<h2><a name="References">References</a></h2>
<table cellspacing="12" cellpadding="0" width="100%" border="0">
  <tbody>
    <tr>
      <td valign="top" width="1">[<a name="FAQ">FAQ</a>]</td>
      <td valign="top">Unicode Frequently Asked Questions<br>
        <a href="http://www.unicode.org/unicode/faq/">http://www.unicode.org/unicode/faq/<br>
        </a><i>For answers to common questions on technical issues.</i></td>
    </tr>
    <tr>
      <td valign="top" width="1">[<a name="Glossary">Glossary</a>]</td>
      <td valign="top">Unicode Glossary<a
        href="http://www.unicode.org/glossary/"><br>
        http://www.unicode.org/glossary/<br>
        </a><i>For explanations of terminology used in this and other documents.</i></td>
    </tr>
    <tr>
      <td valign="top" width="1">[<a name="Reports">Reports</a>]</td>
      <td valign="top">Unicode Technical Reports<br>
        <a href="http://www.unicode.org/unicode/reports/">http://www.unicode.org/unicode/reports/<br>
        </a><i>For information on the status and development process for 
        technical reports, and for a list of technical reports.</i></td>
    </tr>
    <tr>
      <td valign="top" width="1">[<a name="U3.1">U3.1</a>]</td>
      <td valign="top">Unicode Standard Annex #27: Unicode 3.1<a
        href="http://www.unicode.org/unicode/reports/tr27/"><br>
        http://www.unicode.org/unicode/reports/tr27/</a></td>
    </tr>
    <tr>
      <td valign="top" width="1">[<a name="Versions">Versions</a>]</td>
      <td valign="top">Versions of the Unicode Standard<br>
        <a href="http://www.unicode.org/unicode/standard/versions/">http://www.unicode.org/unicode/standard/versions/<br>
        </a><i>For details on the precise contents of each version of the 
        Unicode Standard, and how to cite them.</i></td>
    </tr>
  </tbody>
</table>
<h2><br>
<i><a name="UCD_Terms">UCD Terms of Use</a></i></h2>
<h3><i>Disclaimer</i></h3>
<blockquote>
  <p><i>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.</i></p>
  <p><i>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.</i></p>
</blockquote>
<h3><i>Limitations on Rights to Redistribute This Data</i></h3>
<blockquote>
  <p><i>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.</i></p>
</blockquote>
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src="http://www.unicode.org/img/hb_home.gif" border="0" alt="Home" width="40"
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c7b62a68	8	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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c7b62a68	13	<title>Unicode Character Database</title>
c7b62a68	14	</head>
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c7b62a68	16	<body>
c7b62a68	17
06bfd75b	18	<table width="100%" cellpadding="0" cellspacing="0" border="0">
	19	<tr>
	20	<td>
	21	<table width="100%" border="0" cellpadding="0" cellspacing="0">
	22	<tr>
	23	<td class="icon"><a href="http://www.unicode.org"><img border="0"
	24	src="http://www.unicode.org/webscripts/logo60s2.gif" align="middle"
	25	alt="[Unicode]" width="34" height="33"></a>  <a
	26	class="bar" href="UnicodeCharacterDatabase.html">Unicode Character
	27	Database</a></td>
	28	</tr>
	29	</table>
	30	</td>
	31	</tr>
	32	<tr>
	33	<td class="gray"> </td>
	34	</tr>
	35	</table>
	36	<h1>UNICODE CHARACTER DATABASE</h1>
c7b62a68	37	<table border="1" cellspacing="2" cellpadding="0" height="87" width="100%">
c7b62a68	38	<tr>
c7b62a68	39	<td valign="TOP" width="144">Revision</td>
06bfd75b	40	<td valign="TOP">3.1.0</td>
c7b62a68	41	</tr>
c7b62a68	42	<tr>
c7b62a68	43	<td valign="TOP" width="144">Authors</td>
c7b62a68	44	<td valign="TOP">Mark Davis and Ken Whistler</td>
c7b62a68	45	</tr>
c7b62a68	46	<tr>
c7b62a68	47	<td valign="TOP" width="144">Date</td>
06bfd75b	48	<td valign="TOP">2001-02-28</td>
c7b62a68	49	</tr>
c7b62a68	50	<tr>
c7b62a68	51	<td valign="TOP" width="144">This Version</td>
8836d2a5	52	<td valign="TOP"><a
06bfd75b	53	href="http://http://www.unicode.org/Public/3.1-Update/UnicodeCharacterDatabase-3.1.0.html">http://www.unicode.org/Public/3.1-Update/UnicodeCharacterDatabase-3.1.0.html</a></td>
c7b62a68	54	</tr>
c7b62a68	55	<tr>
c7b62a68	56	<td valign="TOP" width="144">Previous Version</td>
8836d2a5	57	<td valign="TOP"><a
06bfd75b	58	href="http://www.unicode.org/Public/3.0-Update1/UnicodeCharacterDatabase-3.0.1.html">http://www.unicode.org/Public/3.0-Update1/UnicodeCharacterDatabase-3.0.1.html</a></td>
c7b62a68	59	</tr>
c7b62a68	60	<tr>
c7b62a68	61	<td valign="TOP" width="144">Latest Version</td>
8836d2a5	62	<td valign="TOP"><a
8836d2a5	63	href="http://www.unicode.org/Public/UNIDATA/UnicodeCharacterDatabase.html">http://www.unicode.org/Public/UNIDATA/UnicodeCharacterDatabase.html</a></td>
c7b62a68	64	</tr>
c7b62a68	65	</table>
06bfd75b	66	<h3><br>
	67	S<i>ummary</i></h3>
	68	<blockquote>
	69	<p><i>This document describes the format and content of the Unicode Character
	70	Database (UCD)</i></p>
	71	</blockquote>
	72	<h3><i>Status</i></h3>
	73	<blockquote>
	74	<p><i>The file and the files described herein are part of the Unicode
	75	Character Database and are governed by the <a href="#UCD_Terms">UCD Terms of
	76	Use</a> given below.</i></p>
	77	<p><i>The <a href="#References">References</a> provide related information
	78	that is useful in understanding this document.</i></p>
	79	<p><i><b>Warning: </b>the information in this file does not completely
	80	describe the use and interpretation of Unicode character properties and
	81	behavior. It must be used in conjunction with the data in the other files in
	82	the Unicode Character Database, and relies on the notation and definitions
	83	supplied in <a
	84	href="http://www.unicode.org/unicode/standard/versions/Unicode3.0.html">The
	85	Unicode Standard</a>. All chapter references are to Version 3.1.0 of the
	86	standard.</i></p>
	87	</blockquote>
8836d2a5	88	<h2>Introduction</h2>
06bfd75b	89	<p>The Unicode Character Database (UCD) is a set of files that define the
	90	Unicode character properties and internal mappings. This document describes the
	91	files that are part of <a href="http://www.unicode.org/unicode/reports/tr27/">The
	92	Unicode Standard, Version 3.1</a> [<a href="#U3.1">U3.1</a>]. The main changes
	93	in this version are:</p>
8836d2a5	94	<ul>
06bfd75b	95	<li>All of the data files have been updated to account for the large number of
	96	additional characters in Unicode 3.1.</li>
	97	<li>PropList.txt has been extensively reorganized and reformatted.</li>
	98	<li>Scripts.txt has been added to the UCD.</li>
	99	<li>A large number of informative derived property files have been added to
	100	the UCD.</li>
8836d2a5	101	</ul>
06bfd75b	102	<p><i>Files in the UCD use a common format unless otherwise specified. For
	103	details, see <a href="#UCD_File_Format">UCD File Format</a>.</i></p>
	104	<h2><a name="Conformance">Conformance</a></h2>
	105	<p>For information on the meaning and application of the terms normative and
	106	informative, see "Chapter 4, Character Properties (revision)" in <a
	107	href="http://www.unicode.org/unicode/reports/tr27/#conformance">UAX #27, Unicode
	108	3.1</a>.</p>
	109	<p>Some informative data files contain derived properties, properties that can
	110	be derived from other properties in the UCD. The derived properties that are
	111	computed from solely normative properties are themselves normative, while the
	112	others are informative.</p>
	113	<h2>UCD Files</h2>
	114	<p>The following table summarizes the files in the Unicode Character Database.
	115	For more information about these files, see the referenced technical
	116	report(s), files, or section of Unicode Standard, Version 3.1.</p>
	117	<table border="1" cellspacing="0" cellpadding="4">
	118	<tr>
	119	<th>".txt" File</th>
	120	<th>Description</th>
	121	<th align="center">N/I</th>
	122	<th>Summary</th>
	123	</tr>
	124	<tr>
	125	<td>ArabicShaping</td>
	126	<td>Section 8.2</td>
	127	<td align="center">N</td>
	128	<td>Basic Arabic and Syriac character shaping properties, such as initial,
	129	medial and final shapes.</td>
	130	</tr>
	131	<tr>
	132	<td>BidiMirroring</td>
	133	<td><a href="http://www.unicode.org/unicode/reports/tr9/">UAX #9</a></td>
	134	<td align="center">I</td>
	135	<td>Properties for substituting characters in an implementation of
	136	bidirectional mirroring.</td>
	137	</tr>
	138	<tr>
	139	<td>Blocks</td>
	140	<td>Chapter 14</td>
	141	<td align="center">N</td>
	142	<td>List of block names.</td>
	143	</tr>
	144	<tr>
	145	<td>CaseFolding</td>
	146	<td><a href="http://www.unicode.org/unicode/reports/tr21/">UTR #21</a></td>
	147	<td align="center">N</td>
	148	<td>Mapping from characters to their case-folded forms. This is an
	149	informative file containing normative derived properties.
	150	<p><i>Derived from UnicodeData and SpecialCasing.</i></p>
	151	</td>
	152	</tr>
	153	<tr>
	154	<td>CompositionExclusions</td>
	155	<td><a href="http://www.unicode.org/unicode/reports/tr15/">UAX #15</a></td>
	156	<td align="center">N</td>
	157	<td>Properties for normalization.</td>
	158	</tr>
	159	<tr>
	160	<td><i>DerivedXXX</i></td>
	161	<td>DerivedProperties.html</td>
	162	<td align="center">N/I</td>
	163	<td>Various informative derived files, described in the documentation file.
	164	Some of the derived properties are normative and some are informative.</td>
	165	</tr>
166	<tr>
167	<td>EastAsianWidth</td>
168	<td><a href="http://www.unicode.org/unicode/reports/tr11/">UAX #11</a></td>
169	<td align="center">I</td>
170	<td>Properties for determining the choice of wide vs. narrow glyphs in East
171	Asian contexts.</td>
172	</tr>
173	<tr>
174	<td>Index</td>
175	<td>Chapter 14</td>
176	<td align="center">I</td>
177	<td>Index to Unicode characters, as printed in the Unicode Standard. (See <a
178	href="#Update_Note">Update Note</a>.)</td>
179	</tr>
180	<tr>
181	<td>Jamo</td>
182	<td>Chapter 4</td>
183	<td align="center">N</td>
184	<td>List of Jamo short names, used in deriving HANGUL SYLLABLE names
185	algorithmically.</td>
186	</tr>
187	<tr>
188	<td>LineBreak</td>
189	<td><a href="http://www.unicode.org/unicode/reports/tr14/">UAX #14</a></td>
190	<td align="center">N/I</td>
191	<td>Properties for line breaking.</td>
192	</tr>
193	<tr>
194	<td>NamesList</td>
195	<td>Chapter 14</td>
196	<td align="center">I</td>
197	<td>This file duplicates some of the material in the UnicodeData file, and
198	adds annotations used in the character charts.</td>
199	</tr>
200	<tr>
201	<td>NormalizationTest</td>
202	<td><a href="http://www.unicode.org/unicode/reports/tr15/">UAX #15</a></td>
203	<td align="center">N</td>
204	<td>Test file for conformance to Unicode Normalization Forms.</td>
205	</tr>
206	<tr>
207	<td>PropList</td>
208	<td>PropList.html</td>
209	<td align="center">N/I</td>
210	<td>Extended character properties</td>
211	</tr>
212	<tr>
213	<td>Scripts</td>
214	<td><a href="http://www.unicode.org/unicode/reports/tr24/">UTR #24</a></td>
215	<td align="center">I</td>
216	<td>Default scripts values for use in regular expressions.</td>
217	</tr>
218	<tr>
219	<td>SpecialCasing</td>
220	<td>Chapter 4,<br>
221	<a href="http://www.unicode.org/unicode/reports/tr21/">UTR #21</a></td>
222	<td align="center">N</td>
223	<td>List of properties required for full case mapping.</td>
224	</tr>
225	<tr>
226	<td>UnicodeData</td>
227	<td>UnicodeData.html,<br>
228	Chapter 4,<br>
229	<a href="http://www.unicode.org/unicode/reports/tr21/">UTR #21</a>,<br>
230	<a href="http://www.unicode.org/unicode/reports/tr15/">UAX #15</a></td>
231	<td align="center">N/I</td>
232	<td>The main file in the UCD. </td>
233	</tr>
234	<tr>
235	<td>Unihan</td>
236	<td>Unihan.txt</td>
237	<td align="center">N/I</td>
238	<td>Extended properties of Han (CJK) characters. (See <a href="#Format_Note">Format
239	Note</a>.)</td>
240	</tr>
241	</table>
242	<blockquote>
243	<p><b><a name="Update_Note">Update Note</a>: </b>The information in Index.txt
244	files matches the appropriate version of the book. Changes in the Unicode
245	Character Database since then may not be reflected in these files, since they
246	are primarily of archival interest.</p>
247	<p><b><a name="Format_Note">Format Note</a>: </b>The file data format differs
248	from the standard format, and is described in the header of the file. The
249	header also describes which properties are informative and which are
250	normative.</p>
251	</blockquote>
252	<h2><a name="UCD_File_Format">UCD File Format</a></h2>
253	<p>Files in the UCD use the following format, unless otherwise specified.</p>
8836d2a5	254	<ul>
06bfd75b	255	<li>Each line of data consists of fields separated by semicolons. The fields
	256	are numbered starting with zero. Code points are expressed as hexadecimal
	257	numbers with four to six digits. They are written without "U+".
	258	Within a sequence of code points, spaces are used for separation. Leading
	259	and trailing spaces within a field are not significant.</li>
8836d2a5	260	</ul>
8836d2a5	261	<ul>
06bfd75b	262	<li>The first field (0) of each line in the Unicode Character Database files
	263	represents a code point or range. The remaining fields (1..n) are properties
	264	associated with that code point.</li>
8836d2a5	265	</ul>
8836d2a5	266	<ul>
06bfd75b	267	<li>A range of code points is specified by the form "X..Y". Each
06bfd75b	268	code point from X to Y has the associated properties. For example:</li>
8836d2a5	269	</ul>
06bfd75b	270	<blockquote>
	271	<pre>0000..007F; Basic Latin
	272	0080..00FF; Latin-1 Supplement
	273
	274	1680 ; White_space # Zs OGHAM SPACE MARK
	275	2000..200A; White_space # Zs [11] EN QUAD..HAIR SPACE</pre>
	276	</blockquote>
8836d2a5	277	<ul>
06bfd75b	278	<li>Hash marks ("#") are used to indicate comments: all characters
	279	from the hash mark to the end of the line are comments, and disregarded when
	280	parsing data. In many files, the comments on data lines use a common format.</li>
8836d2a5	281	</ul>
06bfd75b	282	<blockquote>
	283	<pre>00BC..00BE ; numeric # No [3] VULGAR FRACTION ONE QUARTER..VULGAR FRACTION THREE QUARTERS</pre>
	284	</blockquote>
8836d2a5	285	<ul>
06bfd75b	286	<li>The first part of the comment is the UCD general category. The symbol
	287	"L&" indicates characters of type Lu, Ll, or Lt. The code
	288	point ranges are calculated so that they all have the same General Category
	289	(or L&). While this results in more ranges than are strictly necessary,
	290	it makes the contents of the ranges clearer. The second part of the comment
	291	(in square brackets), indicates the number of items in a range, if there is
	292	one. The third part is the name of the character in field zero: if it is a
	293	range, then the character names for the ends of the range are separated by
	294	"..".</li>
8836d2a5	295	</ul>
06bfd75b	296	<p>However, the comments are purely informational, and may change format or be
	297	omitted in the future. They should not be parsed for content.</p>
	298	<h2><a name="References">References</a></h2>
	299	<table cellspacing="12" cellpadding="0" width="100%" border="0">
	300	<tbody>
	301	<tr>
	302	<td valign="top" width="1">[<a name="FAQ">FAQ</a>]</td>
	303	<td valign="top">Unicode Frequently Asked Questions<br>
	304	<a href="http://www.unicode.org/unicode/faq/">http://www.unicode.org/unicode/faq/<br>
	305	</a><i>For answers to common questions on technical issues.</i></td>
	306	</tr>
	307	<tr>
	308	<td valign="top" width="1">[<a name="Glossary">Glossary</a>]</td>
	309	<td valign="top">Unicode Glossary<a
	310	href="http://www.unicode.org/glossary/"><br>
	311	http://www.unicode.org/glossary/<br>
	312	</a><i>For explanations of terminology used in this and other documents.</i></td>
	313	</tr>
	314	<tr>
	315	<td valign="top" width="1">[<a name="Reports">Reports</a>]</td>
	316	<td valign="top">Unicode Technical Reports<br>
	317	<a href="http://www.unicode.org/unicode/reports/">http://www.unicode.org/unicode/reports/<br>
	318	</a><i>For information on the status and development process for
	319	technical reports, and for a list of technical reports.</i></td>
	320	</tr>
	321	<tr>
	322	<td valign="top" width="1">[<a name="U3.1">U3.1</a>]</td>
	323	<td valign="top">Unicode Standard Annex #27: Unicode 3.1<a
	324	href="http://www.unicode.org/unicode/reports/tr27/"><br>
	325	http://www.unicode.org/unicode/reports/tr27/</a></td>
	326	</tr>
	327	<tr>
	328	<td valign="top" width="1">[<a name="Versions">Versions</a>]</td>
	329	<td valign="top">Versions of the Unicode Standard<br>
	330	<a href="http://www.unicode.org/unicode/standard/versions/">http://www.unicode.org/unicode/standard/versions/<br>
	331	</a><i>For details on the precise contents of each version of the
	332	Unicode Standard, and how to cite them.</i></td>
	333	</tr>
	334	</tbody>
	335	</table>
	336	<h2><br>
	337	<i><a name="UCD_Terms">UCD Terms of Use</a></i></h2>
	338	<h3><i>Disclaimer</i></h3>
	339	<blockquote>
	340	<p><i>The Unicode Character Database is provided as is by Unicode, Inc. No
	341	claims are made as to fitness for any particular purpose. No warranties of any
	342	kind are expressed or implied. The recipient agrees to determine applicability
	343	of information provided. If this file has been purchased on magnetic or
	344	optical media from Unicode, Inc., the sole remedy for any claim will be
	345	exchange of defective media within 90 days of receipt.</i></p>
	346	<p><i>This disclaimer is applicable for all other data files accompanying the
	347	Unicode Character Database, some of which have been compiled by the Unicode
	348	Consortium, and some of which have been supplied by other sources.</i></p>
	349	</blockquote>
	350	<h3><i>Limitations on Rights to Redistribute This Data</i></h3>
	351	<blockquote>
	352	<p><i>Recipient is granted the right to make copies in any form for internal
	353	distribution and to freely use the information supplied in the creation of
	354	products supporting the Unicode<sup>TM</sup> Standard. The files in the
	355	Unicode Character Database can be redistributed to third parties or other
	356	organizations (whether for profit or not) as long as this notice and the
	357	disclaimer notice are retained. Information can be extracted from these files
	358	and used in documentation or programs, as long as there is an accompanying
	359	notice indicating the source.</i></p>
360	</blockquote>
361	<hr width="50%">
362	<p align="center"><a href="http://www.unicode.org/unicode/copyright.html"><img
363	src="http://www.unicode.org/img/hb_home.gif" border="0" alt="Home" width="40"
364	height="49"><img src="http://www.unicode.org/img/hb_mid.gif" border="0"
365	alt="Terms of Use" width="152" height="49"><img
366	src="http://www.unicode.org/img/hb_mail.gif" border="0" alt="E-mail" width="46"
367	height="49"></a>
8836d2a5	368
	369	</body>
	370
	371	</html>