mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-11-25 19:49:04 +08:00
645 lines
15 KiB
HTML
645 lines
15 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
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"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<meta name="generator" content="AsciiDoc 8.5.2" />
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<title>UNICHARSET(5)</title>
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<style type="text/css">
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/* Debug borders */
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p, li, dt, dd, div, pre, h1, h2, h3, h4, h5, h6 {
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/*
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border: 1px solid red;
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*/
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}
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body {
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margin: 1em 5% 1em 5%;
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}
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a {
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color: blue;
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text-decoration: underline;
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}
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a:visited {
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color: fuchsia;
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}
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em {
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font-style: italic;
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color: navy;
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}
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strong {
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font-weight: bold;
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color: #083194;
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}
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tt {
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color: navy;
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}
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h1, h2, h3, h4, h5, h6 {
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color: #527bbd;
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font-family: sans-serif;
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margin-top: 1.2em;
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margin-bottom: 0.5em;
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line-height: 1.3;
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}
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h1, h2, h3 {
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border-bottom: 2px solid silver;
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}
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h2 {
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padding-top: 0.5em;
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}
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h3 {
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float: left;
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}
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h3 + * {
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clear: left;
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}
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div.sectionbody {
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font-family: serif;
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margin-left: 0;
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}
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hr {
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border: 1px solid silver;
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}
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p {
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margin-top: 0.5em;
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margin-bottom: 0.5em;
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}
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ul, ol, li > p {
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margin-top: 0;
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}
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pre {
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padding: 0;
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margin: 0;
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}
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span#author {
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color: #527bbd;
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font-family: sans-serif;
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font-weight: bold;
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font-size: 1.1em;
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}
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span#email {
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}
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span#revnumber, span#revdate, span#revremark {
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font-family: sans-serif;
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}
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div#footer {
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font-family: sans-serif;
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font-size: small;
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border-top: 2px solid silver;
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padding-top: 0.5em;
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margin-top: 4.0em;
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}
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div#footer-text {
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float: left;
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padding-bottom: 0.5em;
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}
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div#footer-badges {
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float: right;
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padding-bottom: 0.5em;
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}
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div#preamble {
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margin-top: 1.5em;
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margin-bottom: 1.5em;
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}
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div.tableblock, div.imageblock, div.exampleblock, div.verseblock,
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div.quoteblock, div.literalblock, div.listingblock, div.sidebarblock,
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div.admonitionblock {
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margin-top: 1.0em;
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margin-bottom: 1.5em;
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}
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div.admonitionblock {
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margin-top: 2.0em;
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margin-bottom: 2.0em;
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margin-right: 10%;
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color: #606060;
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}
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div.content { /* Block element content. */
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padding: 0;
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}
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/* Block element titles. */
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div.title, caption.title {
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color: #527bbd;
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font-family: sans-serif;
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font-weight: bold;
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text-align: left;
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margin-top: 1.0em;
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margin-bottom: 0.5em;
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}
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div.title + * {
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margin-top: 0;
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}
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td div.title:first-child {
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margin-top: 0.0em;
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}
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div.content div.title:first-child {
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margin-top: 0.0em;
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}
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div.content + div.title {
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margin-top: 0.0em;
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}
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div.sidebarblock > div.content {
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background: #ffffee;
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border: 1px solid silver;
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padding: 0.5em;
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}
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div.listingblock > div.content {
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border: 1px solid silver;
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background: #f4f4f4;
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padding: 0.5em;
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}
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div.quoteblock, div.verseblock {
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padding-left: 1.0em;
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margin-left: 1.0em;
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margin-right: 10%;
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border-left: 5px solid #dddddd;
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color: #777777;
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}
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div.quoteblock > div.attribution {
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padding-top: 0.5em;
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text-align: right;
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}
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div.verseblock > div.content {
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white-space: pre;
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}
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div.verseblock > div.attribution {
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padding-top: 0.75em;
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text-align: left;
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}
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/* DEPRECATED: Pre version 8.2.7 verse style literal block. */
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div.verseblock + div.attribution {
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text-align: left;
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}
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div.admonitionblock .icon {
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vertical-align: top;
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font-size: 1.1em;
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font-weight: bold;
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text-decoration: underline;
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color: #527bbd;
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padding-right: 0.5em;
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}
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div.admonitionblock td.content {
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padding-left: 0.5em;
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border-left: 3px solid #dddddd;
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}
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div.exampleblock > div.content {
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border-left: 3px solid #dddddd;
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padding-left: 0.5em;
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}
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div.imageblock div.content { padding-left: 0; }
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span.image img { border-style: none; }
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a.image:visited { color: white; }
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dl {
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margin-top: 0.8em;
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margin-bottom: 0.8em;
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}
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dt {
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margin-top: 0.5em;
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margin-bottom: 0;
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font-style: normal;
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color: navy;
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}
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dd > *:first-child {
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margin-top: 0.1em;
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}
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ul, ol {
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list-style-position: outside;
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}
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ol.arabic {
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list-style-type: decimal;
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}
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ol.loweralpha {
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list-style-type: lower-alpha;
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}
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ol.upperalpha {
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list-style-type: upper-alpha;
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}
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ol.lowerroman {
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list-style-type: lower-roman;
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}
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ol.upperroman {
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list-style-type: upper-roman;
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}
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div.compact ul, div.compact ol,
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div.compact p, div.compact p,
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div.compact div, div.compact div {
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margin-top: 0.1em;
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margin-bottom: 0.1em;
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}
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div.tableblock > table {
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border: 3px solid #527bbd;
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}
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thead, p.table.header {
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font-family: sans-serif;
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font-weight: bold;
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}
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tfoot {
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font-weight: bold;
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}
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td > div.verse {
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white-space: pre;
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}
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p.table {
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margin-top: 0;
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}
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/* Because the table frame attribute is overriden by CSS in most browsers. */
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div.tableblock > table[frame="void"] {
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border-style: none;
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}
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div.tableblock > table[frame="hsides"] {
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border-left-style: none;
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border-right-style: none;
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}
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div.tableblock > table[frame="vsides"] {
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border-top-style: none;
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border-bottom-style: none;
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}
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div.hdlist {
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margin-top: 0.8em;
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margin-bottom: 0.8em;
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}
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div.hdlist tr {
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padding-bottom: 15px;
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}
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dt.hdlist1.strong, td.hdlist1.strong {
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font-weight: bold;
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}
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td.hdlist1 {
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vertical-align: top;
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font-style: normal;
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padding-right: 0.8em;
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color: navy;
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}
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td.hdlist2 {
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vertical-align: top;
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}
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div.hdlist.compact tr {
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margin: 0;
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padding-bottom: 0;
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}
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.comment {
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background: yellow;
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}
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.footnote, .footnoteref {
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font-size: 0.8em;
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}
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span.footnote, span.footnoteref {
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vertical-align: super;
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}
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#footnotes {
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margin: 20px 0 20px 0;
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padding: 7px 0 0 0;
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}
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#footnotes div.footnote {
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margin: 0 0 5px 0;
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}
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#footnotes hr {
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border: none;
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border-top: 1px solid silver;
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height: 1px;
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text-align: left;
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margin-left: 0;
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width: 20%;
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min-width: 100px;
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}
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@media print {
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div#footer-badges { display: none; }
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}
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div#toc {
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margin-bottom: 2.5em;
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}
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div#toctitle {
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color: #527bbd;
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font-family: sans-serif;
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font-size: 1.1em;
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font-weight: bold;
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margin-top: 1.0em;
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margin-bottom: 0.1em;
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}
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div.toclevel1, div.toclevel2, div.toclevel3, div.toclevel4 {
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margin-top: 0;
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margin-bottom: 0;
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}
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div.toclevel2 {
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margin-left: 2em;
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font-size: 0.9em;
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}
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div.toclevel3 {
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margin-left: 4em;
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font-size: 0.9em;
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}
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div.toclevel4 {
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margin-left: 6em;
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font-size: 0.9em;
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}
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/* Overrides for manpage documents */
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h1 {
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padding-top: 0.5em;
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padding-bottom: 0.5em;
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border-top: 2px solid silver;
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border-bottom: 2px solid silver;
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}
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h2 {
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border-style: none;
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}
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div.sectionbody {
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margin-left: 5%;
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}
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@media print {
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div#toc { display: none; }
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}
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/* Workarounds for IE6's broken and incomplete CSS2. */
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div.sidebar-content {
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background: #ffffee;
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border: 1px solid silver;
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padding: 0.5em;
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}
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div.sidebar-title, div.image-title {
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color: #527bbd;
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font-family: sans-serif;
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font-weight: bold;
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margin-top: 0.0em;
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margin-bottom: 0.5em;
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}
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div.listingblock div.content {
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border: 1px solid silver;
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background: #f4f4f4;
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padding: 0.5em;
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}
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div.quoteblock-attribution {
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||
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padding-top: 0.5em;
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text-align: right;
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||
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}
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||
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div.verseblock-content {
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||
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white-space: pre;
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||
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}
|
||
|
|
div.verseblock-attribution {
|
||
|
|
padding-top: 0.75em;
|
||
|
|
text-align: left;
|
||
|
|
}
|
||
|
|
|
||
|
|
div.exampleblock-content {
|
||
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|
border-left: 3px solid #dddddd;
|
||
|
|
padding-left: 0.5em;
|
||
|
|
}
|
||
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|
||
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|
/* IE6 sets dynamically generated links as visited. */
|
||
|
|
div#toc a:visited { color: blue; }
|
||
|
|
</style>
|
||
|
|
<script type="text/javascript">
|
||
|
|
/*<+'])');
|
||
|
|
// Function that scans the DOM tree for header elements (the DOM2
|
||
|
|
// nodeIterator API would be a better technique but not supported by all
|
||
|
|
// browsers).
|
||
|
|
var iterate = function (el) {
|
||
|
|
for (var i = el.firstChild; i != null; i = i.nextSibling) {
|
||
|
|
if (i.nodeType == 1 /* Node.ELEMENT_NODE */) {
|
||
|
|
var mo = re.exec(i.tagName);
|
||
|
|
if (mo && (i.getAttribute("class") || i.getAttribute("className")) != "float") {
|
||
|
|
result[result.length] = new TocEntry(i, getText(i), mo[1]-1);
|
||
|
|
}
|
||
|
|
iterate(i);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
iterate(el);
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
var toc = document.getElementById("toc");
|
||
|
|
var entries = tocEntries(document.getElementById("content"), toclevels);
|
||
|
|
for (var i = 0; i < entries.length; ++i) {
|
||
|
|
var entry = entries[i];
|
||
|
|
if (entry.element.id == "")
|
||
|
|
entry.element.id = "_toc_" + i;
|
||
|
|
var a = document.createElement("a");
|
||
|
|
a.href = "#" + entry.element.id;
|
||
|
|
a.appendChild(document.createTextNode(entry.text));
|
||
|
|
var div = document.createElement("div");
|
||
|
|
div.appendChild(a);
|
||
|
|
div.className = "toclevel" + entry.toclevel;
|
||
|
|
toc.appendChild(div);
|
||
|
|
}
|
||
|
|
if (entries.length == 0)
|
||
|
|
toc.parentNode.removeChild(toc);
|
||
|
|
},
|
||
|
|
|
||
|
|
|
||
|
|
/////////////////////////////////////////////////////////////////////
|
||
|
|
// Footnotes generator
|
||
|
|
/////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
/* Based on footnote generation code from:
|
||
|
|
* http://www.brandspankingnew.net/archive/2005/07/format_footnote.html
|
||
|
|
*/
|
||
|
|
|
||
|
|
footnotes: function () {
|
||
|
|
var cont = document.getElementById("content");
|
||
|
|
var noteholder = document.getElementById("footnotes");
|
||
|
|
var spans = cont.getElementsByTagName("span");
|
||
|
|
var refs = {};
|
||
|
|
var n = 0;
|
||
|
|
for (i=0; i<spans.length; i++) {
|
||
|
|
if (spans[i].className == "footnote") {
|
||
|
|
n++;
|
||
|
|
// Use [\s\S] in place of . so multi-line matches work.
|
||
|
|
// Because JavaScript has no s (dotall) regex flag.
|
||
|
|
note = spans[i].innerHTML.match(/\s*\[([\s\S]*)]\s*/)[1];
|
||
|
|
noteholder.innerHTML +=
|
||
|
|
"<div class='footnote' id='_footnote_" + n + "'>" +
|
||
|
|
"<a href='#_footnoteref_" + n + "' title='Return to text'>" +
|
||
|
|
n + "</a>. " + note + "</div>";
|
||
|
|
spans[i].innerHTML =
|
||
|
|
"[<a id='_footnoteref_" + n + "' href='#_footnote_" + n +
|
||
|
|
"' title='View footnote' class='footnote'>" + n + "</a>]";
|
||
|
|
var id =spans[i].getAttribute("id");
|
||
|
|
if (id != null) refs["#"+id] = n;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (n == 0)
|
||
|
|
noteholder.parentNode.removeChild(noteholder);
|
||
|
|
else {
|
||
|
|
// Process footnoterefs.
|
||
|
|
for (i=0; i<spans.length; i++) {
|
||
|
|
if (spans[i].className == "footnoteref") {
|
||
|
|
var href = spans[i].getElementsByTagName("a")[0].getAttribute("href");
|
||
|
|
href = href.match(/#.*/)[0]; // Because IE return full URL.
|
||
|
|
n = refs[href];
|
||
|
|
spans[i].innerHTML =
|
||
|
|
"[<a href='#_footnote_" + n +
|
||
|
|
"' title='View footnote' class='footnote'>" + n + "</a>]";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
/*]]>*/
|
||
|
|
</script>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
<div id="header">
|
||
|
|
<h1>
|
||
|
|
UNICHARSET(5) Manual Page
|
||
|
|
</h1>
|
||
|
|
<h2>NAME</h2>
|
||
|
|
<div class="sectionbody">
|
||
|
|
<p>unicharset -
|
||
|
|
character properties for use by Tesseract
|
||
|
|
</p>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
<div id="content">
|
||
|
|
<h2 id="_description">DESCRIPTION</h2>
|
||
|
|
<div class="sectionbody">
|
||
|
|
<div class="paragraph"><p>Tesseract needs to have access to the character properties isalpha,
|
||
|
|
isdigit, isupper, islower, ispunctuation. This data must be encoded
|
||
|
|
in the unicharset data file. Each line of this file corresponds to
|
||
|
|
one character. The character in UTF-8 is followed by a hexadecimal
|
||
|
|
number representing a binary mask that encodes the properties.
|
||
|
|
Each bit corresponds to a property. If the bit is set to 1, it
|
||
|
|
means that the property is true. The bit ordering is (from least
|
||
|
|
significant bit to most significant bit): isalpha, islower, isupper,
|
||
|
|
isdigit, ispunctuation.</p></div>
|
||
|
|
<div class="paragraph"><p>Each line in the unicharset file has four space-separated fields:</p></div>
|
||
|
|
<div class="literalblock">
|
||
|
|
<div class="content">
|
||
|
|
<pre><tt>[character] [properties] [script] [id]</tt></pre>
|
||
|
|
</div></div>
|
||
|
|
</div>
|
||
|
|
<h2 id="_example">EXAMPLE</h2>
|
||
|
|
<div class="sectionbody">
|
||
|
|
<div class="literalblock">
|
||
|
|
<div class="content">
|
||
|
|
<pre><tt>; 10 Common 46
|
||
|
|
b 3 Latin 59
|
||
|
|
W 5 Latin 40
|
||
|
|
7 8 Common 66
|
||
|
|
= 0 Common 93</tt></pre>
|
||
|
|
</div></div>
|
||
|
|
<div class="paragraph"><p>";" is a punctuation character. Its properties are thus represented by the binary number
|
||
|
|
10000 (10 in hexadecimal).</p></div>
|
||
|
|
<div class="paragraph"><p>"b" is an alphabetic character and a lower case character. Its properties are thus
|
||
|
|
represented by the binary number 00011 (3 in hexadecimal).</p></div>
|
||
|
|
<div class="paragraph"><p>"W" is an alphabetic character and an upper case character. Its properties are thus
|
||
|
|
represented by the binary number 00101 (5 in hexadecimal).</p></div>
|
||
|
|
<div class="paragraph"><p>"7" is just a digit. Its properties are thus represented by the binary number 01000
|
||
|
|
(8 in hexadecimal).</p></div>
|
||
|
|
<div class="paragraph"><p>"=" is not punctuation nor a digit nor an alphabetic character. Its properties are
|
||
|
|
thus represented by the binary number 00000 (0 in hexadecimal).</p></div>
|
||
|
|
<div class="paragraph"><p>Japanese or Chinese alphabetic character properties are represented by the binary number
|
||
|
|
00001 (1 in hexadecimal): they are alphabetic, but neither upper nor lower case.</p></div>
|
||
|
|
<div class="paragraph"><p>The last two columns represent the type of script (Latin, Common, Greek, Cyrillic, Han,
|
||
|
|
null) and id code of the character.</p></div>
|
||
|
|
</div>
|
||
|
|
<h2 id="_history">HISTORY</h2>
|
||
|
|
<div class="sectionbody">
|
||
|
|
<div class="paragraph"><p>The unicharset format first appeared with Tesseract 2.00, which was the first version
|
||
|
|
to support languages other than English. The unicharset file contained only the first
|
||
|
|
two fields, and the "ispunctuation" property was absent (punctuation was regarded as
|
||
|
|
"0", as "=" is in the above example.</p></div>
|
||
|
|
</div>
|
||
|
|
<h2 id="_see_also">SEE ALSO</h2>
|
||
|
|
<div class="sectionbody">
|
||
|
|
<div class="paragraph"><p>tesseract(1), unicharset_extractor(1)</p></div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
<div id="footnotes"><hr /></div>
|
||
|
|
<div id="footer">
|
||
|
|
<div id="footer-text">
|
||
|
|
Last updated 2010-09-29 23:46:32 IST
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</body>
|
||
|
|
</html>
|