2010-09-30 10:21:18 +08:00
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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>UNICHARAMBIGS(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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// Footnotes generator
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/////////////////////////////////////////////////////////////////////
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* http://www.brandspankingnew.net/archive/2005/07/format_footnote.html
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*/
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// Because JavaScript has no s (dotall) regex flag.
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"[<a href='#_footnote_" + n +
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}
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/*]]>*/
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</script>
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</head>
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<body>
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<div id="header">
|
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|
|
|
<h1>
|
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|
|
|
UNICHARAMBIGS(5) Manual Page
|
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|
|
</h1>
|
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|
|
<h2>NAME</h2>
|
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|
<div class="sectionbody">
|
|
|
|
|
<p>unicharambigs -
|
|
|
|
|
Tesseract unicharset ambiguities
|
|
|
|
|
</p>
|
|
|
|
|
</div>
|
|
|
|
|
</div>
|
|
|
|
|
<div id="content">
|
|
|
|
|
<h2 id="_description">DESCRIPTION</h2>
|
|
|
|
|
<div class="sectionbody">
|
2012-02-10 06:55:47 +08:00
|
|
|
<div class="paragraph"><p>The unicharambigs file (a component of traineddata, see combine_tessdata(1) )
|
|
|
|
|
is used by Tesseract to represent possible ambiguities between characters,
|
|
|
|
|
or groups of characters.</p></div>
|
2010-09-30 10:21:18 +08:00
|
|
|
<div class="paragraph"><p>The file contains a number of lines, laid out as follow:</p></div>
|
|
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|
|
<div class="literalblock">
|
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|
|
<div class="content">
|
|
|
|
|
<pre><tt>[num] <TAB> [char(s)] <TAB> [num] <TAB> [char(s)] <TAB> [num]</tt></pre>
|
|
|
|
|
</div></div>
|
|
|
|
|
<div class="hdlist"><table>
|
|
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|
|
<tr>
|
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|
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<td class="hdlist1">
|
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|
|
Field one
|
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<br />
|
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|
</td>
|
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<td class="hdlist2">
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<p style="margin-top: 0;">
|
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the number of characters contained in field two
|
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</p>
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</td>
|
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</tr>
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<tr>
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<td class="hdlist1">
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|
Field two
|
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|
<br />
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</td>
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<td class="hdlist2">
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<p style="margin-top: 0;">
|
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|
the character sequence to be replaced
|
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</p>
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</td>
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|
</tr>
|
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|
<tr>
|
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|
<td class="hdlist1">
|
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|
Field three
|
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|
<br />
|
|
|
|
|
</td>
|
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<td class="hdlist2">
|
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|
|
|
<p style="margin-top: 0;">
|
|
|
|
|
the number of characters contained in field four
|
|
|
|
|
</p>
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td class="hdlist1">
|
|
|
|
|
Field four
|
|
|
|
|
<br />
|
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|
|
|
</td>
|
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|
|
|
<td class="hdlist2">
|
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|
|
|
<p style="margin-top: 0;">
|
|
|
|
|
the character sequence used to replace field two
|
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|
|
</p>
|
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</td>
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|
</tr>
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<tr>
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|
|
|
<td class="hdlist1">
|
|
|
|
|
Field five
|
|
|
|
|
<br />
|
|
|
|
|
</td>
|
|
|
|
|
<td class="hdlist2">
|
|
|
|
|
<p style="margin-top: 0;">
|
|
|
|
|
contains either 1 or 0. 1 denotes a mandatory
|
|
|
|
|
replacement, 0 denotes an optional replacement.
|
|
|
|
|
</p>
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table></div>
|
|
|
|
|
<div class="paragraph"><p>Characters appearing in fields two and four should appear in
|
|
|
|
|
unicharset. The numbers in fields one and three refer to the
|
|
|
|
|
number of unichars (not bytes).</p></div>
|
|
|
|
|
</div>
|
|
|
|
|
<h2 id="_example">EXAMPLE</h2>
|
|
|
|
|
<div class="sectionbody">
|
|
|
|
|
<div class="literalblock">
|
|
|
|
|
<div class="content">
|
|
|
|
|
<pre><tt>2 ' ' 1 " 1
|
|
|
|
|
1 m 2 r n 0
|
|
|
|
|
3 i i i 1 m 0</tt></pre>
|
|
|
|
|
</div></div>
|
|
|
|
|
<div class="paragraph"><p>In this example, all instances of the <em>2</em> character sequence <em>'</em>' will
|
|
|
|
|
<strong>always</strong> be replaced by the <em>1</em> character sequence <em>"</em>; a <em>1</em> character
|
|
|
|
|
sequence <em>m</em> <strong>may</strong> be replaced by the <em>2</em> character sequence <em>rn</em>, and
|
|
|
|
|
the <em>3</em> character sequence <strong>may</strong> be replaced by the <em>1</em> character
|
|
|
|
|
sequence <em>m</em>.</p></div>
|
|
|
|
|
</div>
|
|
|
|
|
<h2 id="_history">HISTORY</h2>
|
|
|
|
|
<div class="sectionbody">
|
|
|
|
|
<div class="paragraph"><p>The unicharambigs file first appeared in Tesseract 3.00; prior to that, a
|
|
|
|
|
similar format, called DangAmbigs (<em>dangerous ambiguities</em>) was used: the
|
|
|
|
|
format was almost identical, except only mandatory replacements could be
|
|
|
|
|
specified, and field 5 was absent.</p></div>
|
|
|
|
|
</div>
|
|
|
|
|
<h2 id="_bugs">BUGS</h2>
|
|
|
|
|
<div class="sectionbody">
|
|
|
|
|
<div class="paragraph"><p>This is a documentation "bug": it’s not currently clear what should be done
|
|
|
|
|
in the case of ligatures (such as <em>fi</em>) which may also appear as regular
|
|
|
|
|
letters in the unicharset.</p></div>
|
|
|
|
|
</div>
|
|
|
|
|
<h2 id="_see_also">SEE ALSO</h2>
|
|
|
|
|
<div class="sectionbody">
|
|
|
|
|
<div class="paragraph"><p>tesseract(1), unicharset(5)</p></div>
|
|
|
|
|
</div>
|
2012-02-10 06:55:47 +08:00
|
|
|
<h2 id="_author">AUTHOR</h2>
|
|
|
|
|
<div class="sectionbody">
|
|
|
|
|
<div class="paragraph"><p>The Tesseract OCR engine was written by Ray Smith and his research groups
|
|
|
|
|
at Hewlett Packard (1985-1995) and Google (2006-present).</p></div>
|
|
|
|
|
</div>
|
2010-09-30 10:21:18 +08:00
|
|
|
</div>
|
|
|
|
|
<div id="footnotes"><hr /></div>
|
|
|
|
|
<div id="footer">
|
|
|
|
|
<div id="footer-text">
|
2012-02-10 06:55:47 +08:00
|
|
|
Last updated 2012-02-08 10:59:49 PDT
|
2010-09-30 10:21:18 +08:00
|
|
|
</div>
|
|
|
|
|
</div>
|
|
|
|
|
</body>
|
|
|
|
|
</html>
|
