mirror of
https://github.com/mrkite/soundsmith.git
synced 2024-10-31 14:06:33 +00:00
839 lines
26 KiB
HTML
839 lines
26 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="application/xhtml+xml; charset=UTF-8" />
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<meta name="generator" content="AsciiDoc 8.6.9" />
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<title>Nucleus Demo</title>
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<style type="text/css">
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/* Shared CSS for AsciiDoc xhtml11 and html5 backends */
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/* Default font. */
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body {
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font-family: Georgia,serif;
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}
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/* Title font. */
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h1, h2, h3, h4, h5, h6,
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div.title, caption.title,
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thead, p.table.header,
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#toctitle,
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#author, #revnumber, #revdate, #revremark,
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#footer {
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font-family: Arial,Helvetica,sans-serif;
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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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h1, h2, h3, h4, h5, h6 {
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color: #527bbd;
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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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h5 {
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font-size: 1.0em;
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}
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div.sectionbody {
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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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ul > li { color: #aaa; }
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ul > li > * { color: black; }
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.monospaced, code, pre {
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font-family: "Courier New", Courier, monospace;
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font-size: inherit;
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color: navy;
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padding: 0;
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margin: 0;
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}
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pre {
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white-space: pre-wrap;
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}
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#author {
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color: #527bbd;
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font-weight: bold;
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font-size: 1.1em;
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}
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#email {
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}
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#revnumber, #revdate, #revremark {
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}
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#footer {
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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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#footer-text {
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float: left;
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padding-bottom: 0.5em;
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}
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#footer-badges {
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float: right;
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padding-bottom: 0.5em;
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}
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#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.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-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 #dddddd;
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border-left: 4px solid #f0f0f0;
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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 #dddddd;
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border-left: 5px solid #f0f0f0;
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background: #f8f8f8;
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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 #f0f0f0;
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color: #888;
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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 > pre.content {
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font-family: inherit;
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font-size: inherit;
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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; vertical-align: text-bottom; }
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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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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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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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div.colist td {
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padding-right: 0.5em;
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padding-bottom: 0.3em;
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vertical-align: top;
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}
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div.colist td img {
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margin-top: 0.3em;
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}
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@media print {
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#footer-badges { display: none; }
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}
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#toc {
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margin-bottom: 2.5em;
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}
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#toctitle {
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color: #527bbd;
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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.toclevel0, 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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|
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span.aqua { color: aqua; }
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span.black { color: black; }
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span.blue { color: blue; }
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span.fuchsia { color: fuchsia; }
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span.gray { color: gray; }
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span.green { color: green; }
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span.lime { color: lime; }
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span.maroon { color: maroon; }
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span.navy { color: navy; }
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|
span.olive { color: olive; }
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span.purple { color: purple; }
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span.red { color: red; }
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span.silver { color: silver; }
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|
span.teal { color: teal; }
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span.white { color: white; }
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span.yellow { color: yellow; }
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|
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span.aqua-background { background: aqua; }
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|
span.black-background { background: black; }
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|
span.blue-background { background: blue; }
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|
span.fuchsia-background { background: fuchsia; }
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|
span.gray-background { background: gray; }
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|
span.green-background { background: green; }
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|
span.lime-background { background: lime; }
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|
span.maroon-background { background: maroon; }
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|
span.navy-background { background: navy; }
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|
span.olive-background { background: olive; }
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||
|
span.purple-background { background: purple; }
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|
span.red-background { background: red; }
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|
span.silver-background { background: silver; }
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||
|
span.teal-background { background: teal; }
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|
span.white-background { background: white; }
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||
|
span.yellow-background { background: yellow; }
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||
|
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||
|
span.big { font-size: 2em; }
|
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|
span.small { font-size: 0.6em; }
|
||
|
|
||
|
span.underline { text-decoration: underline; }
|
||
|
span.overline { text-decoration: overline; }
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||
|
span.line-through { text-decoration: line-through; }
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||
|
|
||
|
div.unbreakable { page-break-inside: avoid; }
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||
|
|
||
|
|
||
|
/*
|
||
|
* xhtml11 specific
|
||
|
*
|
||
|
* */
|
||
|
|
||
|
div.tableblock {
|
||
|
margin-top: 1.0em;
|
||
|
margin-bottom: 1.5em;
|
||
|
}
|
||
|
div.tableblock > table {
|
||
|
border: 3px solid #527bbd;
|
||
|
}
|
||
|
thead, p.table.header {
|
||
|
font-weight: bold;
|
||
|
color: #527bbd;
|
||
|
}
|
||
|
p.table {
|
||
|
margin-top: 0;
|
||
|
}
|
||
|
/* Because the table frame attribute is overriden by CSS in most browsers. */
|
||
|
div.tableblock > table[frame="void"] {
|
||
|
border-style: none;
|
||
|
}
|
||
|
div.tableblock > table[frame="hsides"] {
|
||
|
border-left-style: none;
|
||
|
border-right-style: none;
|
||
|
}
|
||
|
div.tableblock > table[frame="vsides"] {
|
||
|
border-top-style: none;
|
||
|
border-bottom-style: none;
|
||
|
}
|
||
|
|
||
|
|
||
|
/*
|
||
|
* html5 specific
|
||
|
*
|
||
|
* */
|
||
|
|
||
|
table.tableblock {
|
||
|
margin-top: 1.0em;
|
||
|
margin-bottom: 1.5em;
|
||
|
}
|
||
|
thead, p.tableblock.header {
|
||
|
font-weight: bold;
|
||
|
color: #527bbd;
|
||
|
}
|
||
|
p.tableblock {
|
||
|
margin-top: 0;
|
||
|
}
|
||
|
table.tableblock {
|
||
|
border-width: 3px;
|
||
|
border-spacing: 0px;
|
||
|
border-style: solid;
|
||
|
border-color: #527bbd;
|
||
|
border-collapse: collapse;
|
||
|
}
|
||
|
th.tableblock, td.tableblock {
|
||
|
border-width: 1px;
|
||
|
padding: 4px;
|
||
|
border-style: solid;
|
||
|
border-color: #527bbd;
|
||
|
}
|
||
|
|
||
|
table.tableblock.frame-topbot {
|
||
|
border-left-style: hidden;
|
||
|
border-right-style: hidden;
|
||
|
}
|
||
|
table.tableblock.frame-sides {
|
||
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border-top-style: hidden;
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}
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table.tableblock.frame-none {
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|
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/*
|
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* manpage specific
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*
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* */
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body.manpage h1 {
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|
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|
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margin-left: 3em;
|
||
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}
|
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|
||
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@media print {
|
||
|
body.manpage div#toc { display: none; }
|
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}
|
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|
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|
||
|
</style>
|
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<script type="text/javascript">
|
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/*<![CDATA[*/
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var asciidoc = { // Namespace.
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/////////////////////////////////////////////////////////////////////
|
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// Table Of Contents generator
|
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/////////////////////////////////////////////////////////////////////
|
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|
||
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/* Author: Mihai Bazon, September 2002
|
||
|
* http://students.infoiasi.ro/~mishoo
|
||
|
*
|
||
|
* Table Of Content generator
|
||
|
* Version: 0.4
|
||
|
*
|
||
|
* Feel free to use this script under the terms of the GNU General Public
|
||
|
* License, as long as you do not remove or alter this notice.
|
||
|
*/
|
||
|
|
||
|
/* modified by Troy D. Hanson, September 2006. License: GPL */
|
||
|
/* modified by Stuart Rackham, 2006, 2009. License: GPL */
|
||
|
|
||
|
// toclevels = 1..4.
|
||
|
toc: function (toclevels) {
|
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function getText(el) {
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var text = "";
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|
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else if (i.firstChild != null)
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function TocEntry(el, text, toclevel) {
|
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this.element = el;
|
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this.text = text;
|
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this.toclevel = toclevel;
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|
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|
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function tocEntries(el, toclevels) {
|
||
|
var result = new Array;
|
||
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var re = new RegExp('[hH]([1-'+(toclevels+1)+'])');
|
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// Function that scans the DOM tree for header elements (the DOM2
|
||
|
// nodeIterator API would be a better technique but not supported by all
|
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|
// browsers).
|
||
|
var iterate = function (el) {
|
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|
for (var i = el.firstChild; i != null; i = i.nextSibling) {
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if (i.nodeType == 1 /* Node.ELEMENT_NODE */) {
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|
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if (mo && (i.getAttribute("class") || i.getAttribute("className")) != "float") {
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result[result.length] = new TocEntry(i, getText(i), mo[1]-1);
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}
|
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iterate(i);
|
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}
|
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}
|
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}
|
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iterate(el);
|
||
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return result;
|
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}
|
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|
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var toc = document.getElementById("toc");
|
||
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if (!toc) {
|
||
|
return;
|
||
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}
|
||
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|
||
|
// Delete existing TOC entries in case we're reloading the TOC.
|
||
|
var tocEntriesToRemove = [];
|
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var i;
|
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for (i = 0; i < toc.childNodes.length; i++) {
|
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var entry = toc.childNodes[i];
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if (entry.nodeName.toLowerCase() == 'div'
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&& entry.getAttribute("class")
|
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&& entry.getAttribute("class").match(/^toclevel/))
|
||
|
tocEntriesToRemove.push(entry);
|
||
|
}
|
||
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for (i = 0; i < tocEntriesToRemove.length; i++) {
|
||
|
toc.removeChild(tocEntriesToRemove[i]);
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||
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}
|
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|
|
||
|
// Rebuild TOC entries.
|
||
|
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");
|
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|
a.href = "#" + entry.element.id;
|
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|
a.appendChild(document.createTextNode(entry.text));
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var div = document.createElement("div");
|
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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 () {
|
||
|
// Delete existing footnote entries in case we're reloading the footnodes.
|
||
|
var i;
|
||
|
var noteholder = document.getElementById("footnotes");
|
||
|
if (!noteholder) {
|
||
|
return;
|
||
|
}
|
||
|
var entriesToRemove = [];
|
||
|
for (i = 0; i < noteholder.childNodes.length; i++) {
|
||
|
var entry = noteholder.childNodes[i];
|
||
|
if (entry.nodeName.toLowerCase() == 'div' && entry.getAttribute("class") == "footnote")
|
||
|
entriesToRemove.push(entry);
|
||
|
}
|
||
|
for (i = 0; i < entriesToRemove.length; i++) {
|
||
|
noteholder.removeChild(entriesToRemove[i]);
|
||
|
}
|
||
|
|
||
|
// Rebuild footnote entries.
|
||
|
var cont = document.getElementById("content");
|
||
|
var spans = cont.getElementsByTagName("span");
|
||
|
var refs = {};
|
||
|
var n = 0;
|
||
|
for (i=0; i<spans.length; i++) {
|
||
|
if (spans[i].className == "footnote") {
|
||
|
n++;
|
||
|
var note = spans[i].getAttribute("data-note");
|
||
|
if (!note) {
|
||
|
// 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];
|
||
|
spans[i].innerHTML =
|
||
|
"[<a id='_footnoteref_" + n + "' href='#_footnote_" + n +
|
||
|
"' title='View footnote' class='footnote'>" + n + "</a>]";
|
||
|
spans[i].setAttribute("data-note", note);
|
||
|
}
|
||
|
noteholder.innerHTML +=
|
||
|
"<div class='footnote' id='_footnote_" + n + "'>" +
|
||
|
"<a href='#_footnoteref_" + n + "' title='Return to text'>" +
|
||
|
n + "</a>. " + note + "</div>";
|
||
|
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>]";
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
},
|
||
|
|
||
|
install: function(toclevels) {
|
||
|
var timerId;
|
||
|
|
||
|
function reinstall() {
|
||
|
asciidoc.footnotes();
|
||
|
if (toclevels) {
|
||
|
asciidoc.toc(toclevels);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
function reinstallAndRemoveTimer() {
|
||
|
clearInterval(timerId);
|
||
|
reinstall();
|
||
|
}
|
||
|
|
||
|
timerId = setInterval(reinstall, 500);
|
||
|
if (document.addEventListener)
|
||
|
document.addEventListener("DOMContentLoaded", reinstallAndRemoveTimer, false);
|
||
|
else
|
||
|
window.onload = reinstallAndRemoveTimer;
|
||
|
}
|
||
|
|
||
|
}
|
||
|
asciidoc.install();
|
||
|
/*]]>*/
|
||
|
</script>
|
||
|
</head>
|
||
|
<body class="article">
|
||
|
<div id="header">
|
||
|
<h1>Nucleus Demo</h1>
|
||
|
</div>
|
||
|
<div id="content">
|
||
|
<div id="preamble">
|
||
|
<div class="sectionbody">
|
||
|
<div class="paragraph"><p>Unfortunately, the Nucleus demo and Photonix tool do not use the Soundsmith
|
||
|
format for their music. Instead they use a proprietary format. I decided to
|
||
|
reverse engineer this format as well and make a player for them as well.</p></div>
|
||
|
<div class="paragraph"><p>We, of course, start with loading the boot block:</p></div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content"><!-- Generator: GNU source-highlight 3.1.8
|
||
|
by Lorenzo Bettini
|
||
|
http://www.lorenzobettini.it
|
||
|
http://www.gnu.org/software/src-highlite -->
|
||
|
<pre><tt><span style="color: #990000">.</span>/disasm nucleus<span style="color: #990000">.</span>2mg <span style="color: #993399">800</span> <span style="color: #993399">0</span> <span style="color: #993399">1</span> <span style="color: #990000">></span> boot<span style="color: #990000">.</span>s</tt></pre></div></div>
|
||
|
<div class="paragraph"><p>Which lets us discover the loader is in blocks 7—b.</p></div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content"><!-- Generator: GNU source-highlight 3.1.8
|
||
|
by Lorenzo Bettini
|
||
|
http://www.lorenzobettini.it
|
||
|
http://www.gnu.org/software/src-highlite -->
|
||
|
<pre><tt><span style="color: #990000">.</span>/disasm nucleus<span style="color: #990000">.</span>2mg <span style="color: #993399">9600</span> <span style="color: #993399">7</span> <span style="color: #993399">4</span> <span style="color: #990000">></span> loader<span style="color: #990000">.</span>s</tt></pre></div></div>
|
||
|
<div class="paragraph"><p>The loader uses a table starting at <code>$9607</code>, where the first word is the
|
||
|
starting block, the second word is the number of blocks, followed by a dword
|
||
|
loading address. It repeats until the starting block has the high bit
|
||
|
set. Nucleus does not use any compression for its data.</p></div>
|
||
|
<div class="paragraph"><p>Using this, we discover the music player, which will let us discover where all
|
||
|
the music data and wavebanks are located. (It will also be the thing I study
|
||
|
the most in order to write a player).</p></div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content"><!-- Generator: GNU source-highlight 3.1.8
|
||
|
by Lorenzo Bettini
|
||
|
http://www.lorenzobettini.it
|
||
|
http://www.gnu.org/software/src-highlite -->
|
||
|
<pre><tt><span style="color: #990000">.</span>/disasm nucleus<span style="color: #990000">.</span>2mg <span style="color: #993399">81000</span> <span style="color: #993399">333</span> <span style="color: #993399">4</span> <span style="color: #990000">></span> player<span style="color: #990000">.</span>s</tt></pre></div></div>
|
||
|
<div class="paragraph"><p>The sound player is more akin to MIDI than a tracker. The songs are broken into
|
||
|
channels, each channel controlling 4 oscillators. There aren’t any patterns,
|
||
|
there’s just a long list of note frequencies and note lengths for each channel.
|
||
|
This means each channel has its own play head, only advancing to the next note
|
||
|
when the note length elapses. Each channel loops independently as well.</p></div>
|
||
|
<div class="paragraph"><p>The first time the player initializes, it loads a wavebank from <code>$4/0000</code> into
|
||
|
sound RAM. Then all future initializations load a wavebank from <code>$3/0000</code>.
|
||
|
This means we have two wavebanks, one for the intro song, and the other for all
|
||
|
the main songs in the demo. I use the table from the loader to determine which
|
||
|
blocks are loaded for each memory location.</p></div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content"><!-- Generator: GNU source-highlight 3.1.8
|
||
|
by Lorenzo Bettini
|
||
|
http://www.lorenzobettini.it
|
||
|
http://www.gnu.org/software/src-highlite -->
|
||
|
<pre><tt><span style="color: #990000">.</span>/decrunch nucleus<span style="color: #990000">.</span>2mg <span style="color: #993399">140</span> <span style="color: #993399">128</span> intro<span style="color: #990000">.</span>wb raw
|
||
|
<span style="color: #990000">.</span>/decrunch nucleus<span style="color: #990000">.</span>2mg <span style="color: #993399">12</span> <span style="color: #993399">128</span> main<span style="color: #990000">.</span>wb raw</tt></pre></div></div>
|
||
|
<div class="paragraph"><p>The player uses a block of data located at <code>$8/0300</code> to determine all sorts of
|
||
|
information about the songs and their channels. I’ll be calling it <code>songdefs</code>.</p></div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content"><!-- Generator: GNU source-highlight 3.1.8
|
||
|
by Lorenzo Bettini
|
||
|
http://www.lorenzobettini.it
|
||
|
http://www.gnu.org/software/src-highlite -->
|
||
|
<pre><tt><span style="color: #990000">.</span>/decrunch nucleus<span style="color: #990000">.</span>2mg <span style="color: #993399">268</span> <span style="color: #993399">2</span> songdefs raw</tt></pre></div></div>
|
||
|
<div class="paragraph"><p>This file is divided into chunks. Each chunk is 256 bytes long, and contains
|
||
|
information about a song. So the first chunk contains information about the
|
||
|
intro song. The second chunk contains information about the first main song,
|
||
|
and so on. Using this we can determine there is 1 intro song, and 3 main songs.</p></div>
|
||
|
<div class="paragraph"><p>Each chunk contains instrument data for each channel, as well as where in memory
|
||
|
to find the note data for that song, as well has the playback speed.</p></div>
|
||
|
<div class="paragraph"><p>The word at offset <code>$44</code> in the chunk determines where the note
|
||
|
data for that specific song is located, inside bank 8. Using this we can
|
||
|
extract the note data for all the songs.</p></div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content"><!-- Generator: GNU source-highlight 3.1.8
|
||
|
by Lorenzo Bettini
|
||
|
http://www.lorenzobettini.it
|
||
|
http://www.gnu.org/software/src-highlite -->
|
||
|
<pre><tt><span style="color: #990000">.</span>/decrunch nucleus<span style="color: #990000">.</span>2mg <span style="color: #993399">284</span> <span style="color: #993399">8</span> intro<span style="color: #990000">.</span>song raw
|
||
|
<span style="color: #990000">.</span>/decrunch nucleus<span style="color: #990000">.</span>2mg <span style="color: #993399">270</span> <span style="color: #993399">14</span> main1<span style="color: #990000">.</span>song raw
|
||
|
<span style="color: #990000">.</span>/decrunch nucleus<span style="color: #990000">.</span>2mg <span style="color: #993399">292</span> <span style="color: #993399">7</span> main2<span style="color: #990000">.</span>song raw
|
||
|
<span style="color: #990000">.</span>/decrunch nucleus<span style="color: #990000">.</span>2mg <span style="color: #993399">299</span> <span style="color: #993399">2</span> main3<span style="color: #990000">.</span>song raw</tt></pre></div></div>
|
||
|
<div class="paragraph"><p>I’ll also divide up the songdefs file to provide easy access to each song’s
|
||
|
instrument data.</p></div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content"><!-- Generator: GNU source-highlight 3.1.8
|
||
|
by Lorenzo Bettini
|
||
|
http://www.lorenzobettini.it
|
||
|
http://www.gnu.org/software/src-highlite -->
|
||
|
<pre><tt>dd <span style="font-weight: bold"><span style="color: #0000FF">if</span></span><span style="color: #990000">=</span>songdefs <span style="color: #009900">bs</span><span style="color: #990000">=</span><span style="color: #993399">256</span> <span style="color: #009900">skip</span><span style="color: #990000">=</span><span style="color: #993399">0</span> <span style="color: #009900">count</span><span style="color: #990000">=</span><span style="color: #993399">1</span> <span style="color: #009900">of</span><span style="color: #990000">=</span>intro<span style="color: #990000">.</span>inst
|
||
|
dd <span style="font-weight: bold"><span style="color: #0000FF">if</span></span><span style="color: #990000">=</span>songdefs <span style="color: #009900">bs</span><span style="color: #990000">=</span><span style="color: #993399">256</span> <span style="color: #009900">skip</span><span style="color: #990000">=</span><span style="color: #993399">1</span> <span style="color: #009900">count</span><span style="color: #990000">=</span><span style="color: #993399">1</span> <span style="color: #009900">of</span><span style="color: #990000">=</span>main1<span style="color: #990000">.</span>inst
|
||
|
dd <span style="font-weight: bold"><span style="color: #0000FF">if</span></span><span style="color: #990000">=</span>songdefs <span style="color: #009900">bs</span><span style="color: #990000">=</span><span style="color: #993399">256</span> <span style="color: #009900">skip</span><span style="color: #990000">=</span><span style="color: #993399">2</span> <span style="color: #009900">count</span><span style="color: #990000">=</span><span style="color: #993399">1</span> <span style="color: #009900">of</span><span style="color: #990000">=</span>main2<span style="color: #990000">.</span>inst
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dd <span style="font-weight: bold"><span style="color: #0000FF">if</span></span><span style="color: #990000">=</span>songdefs <span style="color: #009900">bs</span><span style="color: #990000">=</span><span style="color: #993399">256</span> <span style="color: #009900">skip</span><span style="color: #990000">=</span><span style="color: #993399">3</span> <span style="color: #009900">count</span><span style="color: #990000">=</span><span style="color: #993399">1</span> <span style="color: #009900">of</span><span style="color: #990000">=</span>main3<span style="color: #990000">.</span>inst</tt></pre></div></div>
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<div class="paragraph"><p>And that’s all there is to it.</p></div>
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<div class="paragraph"><p>Photonix was extracted in a similar way.</p></div>
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</div>
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<div id="footnotes"><hr /></div>
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Last updated
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2017-08-21 10:48:15 MST
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