2001-10-25 20:35:06 +00:00
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta http-equiv="Content-Language" content="en-us">
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<link rel="stylesheet" href="charts.css" type="text/css">
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<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
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<meta name="ProgId" content="FrontPage.Editor.Document">
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<title>UCA Chart Help</title>
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<base target="main">
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</head>
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<body>
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<h2 align="center">UCA Chart Help</h2>
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<p>This set of charts shows the Unicode Collation Algorithm values for Unicode
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characters. The characters are arranged in the following groups:</p>
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<table>
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<tr>
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<th align="left"><i>Null</i></th>
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<th class="x">Completely ignoreable (primary, secondary and tertiary levels)<br>
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These include control codes and various formatting codes.</th>
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</tr>
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<tr>
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<th align="left"><i>Ignorable</i></th>
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<th class="x">Ignorable at a primary level, but not at a secondary or
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tertiary level.<br>
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These include most accents and diacritics.</th>
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</tr>
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<tr>
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<th align="left"><i>Variable</i></th>
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<th class="x">Characters that may be set to ignorable by a programmatic
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switch.<br>
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These include spaces, punctuation marks, and most symbols.</th>
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</tr>
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<tr>
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<th align="left"><i>Common</i></th>
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<th class="x">Characters that are none of the above, but not considered
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letters.<br>
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These include numbers, currency symbols, etc.</th>
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<tr>
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<th align="left"><i>Letters</i></th>
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<th class="x">According to script</th>
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</tr>
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2001-10-26 23:33:48 +00:00
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<tr>
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<th align="left"><i>Unsupported</i></th>
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<th class="x">Not explicitly supported in this version of UCA; uses
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code-point order</th>
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</tr>
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2001-10-25 20:35:06 +00:00
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</table>
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2001-10-26 23:33:48 +00:00
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<p>Characters from large blocks, such as CJK-Ideographs, Hangul Syllables,
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Private Use Area, etc. are represented by a sampling. Some unassigned code
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points, non-characters and other edge cases are also added to the list.</p>
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2001-10-25 20:35:06 +00:00
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<p>The characters* within each group are arranged in cells. The color of the
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cell indicates the strength of the difference between that character and the <i>previous</i>
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character in the chart, as follows.</p>
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<table>
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<tr>
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<th colspan="2"><font size="3">No Expansion</font>
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<th rowspan="5" width="20">
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<th colspan="2"><font size="3">Expansion</font>
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</tr>
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<tr>
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<td class="p">a<br>
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<tt>0061</tt></td>
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<th class="x">Primary difference
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<td class="ep">dz<br>
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<tt>01F3</tt></td>
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<th class="x">Primary difference</th>
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</tr>
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<tr>
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<td class="s">á<br>
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<tt>00E1</tt></td>
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<th class="x">Secondary Difference</th>
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<td class="es">DZ<br>
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<tt>01F1</tt></td>
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<th class="x">Secondary Difference</th>
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</tr>
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<tr>
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<td class="t">A<br>
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<tt>0041</tt></td>
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<th class="x">Tertiary difference</th>
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<td class="et">Dz<br>
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<tt>01F2</tt></td>
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<th class="x">Tertiary difference</th>
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<tr>
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<td class="q">Å<br>
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<tt>212B</tt></td>
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<th class="x">Quarternary difference<br>
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or no difference</th>
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<td class="eq"> </td>
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<th class="x">Quarternary difference<br>
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or no difference</th>
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</tr>
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</table>
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2001-10-26 23:33:48 +00:00
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<p align="left">If tool-tips are enabled in your browser, then if you pause the
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mouse over any cell, you will see a representation of the sort key. In this
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representation, the separators between the weight levels are represented with
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"|".</p>
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2001-10-25 20:35:06 +00:00
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<table>
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<tr>
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<th>*</th>
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<th class="x">In some cases, the UCA data table also includes contractions.<br>
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They can be recognized by the multiple code point numbers, as in the
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following:</th>
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<td class="p">ஔ<br>
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<tt>0B92 0BD7</tt></td>
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</tr>
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</table>
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</body>
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</html>
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