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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Contents Element</title>
<link href="../docs-assets/Breadcrumbs.css" rel="stylesheet" rev="stylesheet" type="text/css">
<meta name="viewport" content="width=device-width initial-scale=1">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="Content-Language" content="en-gb">
<link href="../docs-assets/Contents.css" rel="stylesheet" rev="stylesheet" type="text/css">
<link href="../docs-assets/Progress.css" rel="stylesheet" rev="stylesheet" type="text/css">
<link href="../docs-assets/Navigation.css" rel="stylesheet" rev="stylesheet" type="text/css">
<link href="../docs-assets/Fonts.css" rel="stylesheet" rev="stylesheet" type="text/css">
<link href="../docs-assets/Base.css" rel="stylesheet" rev="stylesheet" type="text/css">
<script>
function togglePopup(material_id) {
var popup = document.getElementById(material_id);
popup.classList.toggle("show");
}
</script>
<link href="../docs-assets/Popups.css" rel="stylesheet" rev="stylesheet" type="text/css">
<link href="../docs-assets/Colours.css" rel="stylesheet" rev="stylesheet" type="text/css">
</head>
<body class="commentary-font">
<nav role="navigation">
<h1><a href="../index.html">
<img src="../docs-assets/Inform.png" height=72">
</a></h1>
<ul><li><a href="../index.html">home</a></li>
</ul><h2>Compiler</h2><ul>
<li><a href="../structure.html">structure</a></li>
<li><a href="../inbuildn.html">inbuild</a></li>
<li><a href="../inform7n.html">inform7</a></li>
<li><a href="../intern.html">inter</a></li>
<li><a href="../services.html">services</a></li>
<li><a href="../secrets.html">secrets</a></li>
</ul><h2>Other Tools</h2><ul>
<li><a href="../inblorbn.html">inblorb</a></li>
<li><a href="../indocn.html">indoc</a></li>
<li><a href="../inform6.html">inform6</a></li>
<li><a href="../inpolicyn.html">inpolicy</a></li>
</ul><h2>Resources</h2><ul>
<li><a href="../extensions.html">extensions</a></li>
<li><a href="../kits.html">kits</a></li>
</ul><h2>Repository</h2><ul>
<li><a href="https://github.com/ganelson/inform"><img src="../docs-assets/github.png" height=18> github</a></li>
</ul><h2>Related Projects</h2><ul>
<li><a href="../../../inweb/index.html">inweb</a></li>
<li><a href="../../../intest/index.html">intest</a></li>
</ul>
</nav>
<main role="main">
<!--Weave of 'Contents Element' generated by Inweb-->
<div class="breadcrumbs">
<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../intern.html">Inter Modules</a></li><li><a href="index.html">index</a></li><li><a href="index.html#3">Chapter 3: Elements</a></li><li><b>Contents Element</b></li></ul></div>
<p class="purpose">To write the Contents element (C) in the index.</p>
<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>&#167;1. </b>This is a hierarchical contents page.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">ContentsElement::render</span><button class="popup" onclick="togglePopup('usagePopup1')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup1">Usage of <span class="code-font"><span class="function-syntax">ContentsElement::render</span></span>:<br/>The Periodic Table - <a href="3-tpt.html#SP4">&#167;4</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="reserved-syntax">index_session</span><span class="plain-syntax"> *</span><span class="identifier-syntax">session</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">localisation_dictionary</span><span class="plain-syntax"> *</span><span class="identifier-syntax">LD</span><span class="plain-syntax"> = </span><a href="1-ia.html#SP6" class="function-link"><span class="function-syntax">Indexing::get_localisation</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">session</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><a href="1-ia.html#SP6" class="function-link"><span class="function-syntax">Indexing::get_tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">session</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">tree_inventory</span><span class="plain-syntax"> *</span><span class="identifier-syntax">inv</span><span class="plain-syntax"> = </span><a href="1-ia.html#SP6" class="function-link"><span class="function-syntax">Indexing::get_inventory</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">session</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">InterNodeList::array_sort</span><span class="plain-syntax">(</span><span class="identifier-syntax">inv</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">extension_nodes</span><span class="plain-syntax">, </span><span class="identifier-syntax">MakeSynopticModuleStage::category_order</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">InterNodeList::array_sort</span><span class="plain-syntax">(</span><span class="identifier-syntax">inv</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">heading_nodes</span><span class="plain-syntax">, </span><span class="identifier-syntax">MakeSynopticModuleStage::module_order</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-ce4.html#SP1_1" class="named-paragraph-link"><span class="named-paragraph">Write a sort of half-title page</span><span class="named-paragraph-number">1.1</span></a></span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-ce4.html#SP1_2" class="named-paragraph-link"><span class="named-paragraph">Index the headings</span><span class="named-paragraph-number">1.2</span></a></span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-ce4.html#SP1_3" class="named-paragraph-link"><span class="named-paragraph">Index the extensions</span><span class="named-paragraph-number">1.3</span></a></span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP1_1" class="paragraph-anchor"></a><b>&#167;1.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Write a sort of half-title page</span><span class="named-paragraph-number">1.1</span></span><span class="comment-syntax"> =</span>
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_OPEN</span><span class="plain-syntax">(</span><span class="string-syntax">"p"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"&lt;b&gt;"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">pack</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterPackage::from_URL</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"/main/completion/bibliographic"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">title</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Metadata::optional_textual</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^title"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">author</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Metadata::optional_textual</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^author"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">title</span><span class="plain-syntax">) &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">author</span><span class="plain-syntax">) &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Localisation::roman_tt</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Index.Elements.C.Titling"</span><span class="plain-syntax">, </span><span class="identifier-syntax">title</span><span class="plain-syntax">, </span><span class="identifier-syntax">author</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Localisation::roman_t</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Index.Elements.C.AnonymousTitling"</span><span class="plain-syntax">, </span><span class="identifier-syntax">title</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"&lt;/b&gt;"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_CLOSE</span><span class="plain-syntax">(</span><span class="string-syntax">"p"</span><span class="plain-syntax">);</span>
</pre>
<ul class="endnotetexts"><li>This code is used in <a href="3-ce4.html#SP1">&#167;1</a>.</li></ul>
<p class="commentary firstcommentary"><a id="SP1_2" class="paragraph-anchor"></a><b>&#167;1.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Index the headings</span><span class="named-paragraph-number">1.2</span></span><span class="comment-syntax"> =</span>
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_OPEN</span><span class="plain-syntax">(</span><span class="string-syntax">"p"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Localisation::roman</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Index.Elements.C.ContentsHeading"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_CLOSE</span><span class="plain-syntax">(</span><span class="string-syntax">"p"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">min_positive_level</span><span class="plain-syntax"> = </span><span class="constant-syntax">10</span><span class="plain-syntax">, </span><span class="identifier-syntax">entries_written</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">heading_pack</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER_INVENTORY_PACKAGES</span><span class="plain-syntax">(</span><span class="identifier-syntax">heading_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">, </span><span class="identifier-syntax">inv</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">heading_nodes</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Metadata::read_numeric</span><span class="plain-syntax">(</span><span class="identifier-syntax">heading_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^indexable"</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">L</span><span class="plain-syntax"> = (</span><span class="reserved-syntax">int</span><span class="plain-syntax">) </span><span class="identifier-syntax">Metadata::read_numeric</span><span class="plain-syntax">(</span><span class="identifier-syntax">heading_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^level"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">L</span><span class="plain-syntax"> &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">) &amp;&amp; (</span><span class="identifier-syntax">L</span><span class="plain-syntax"> &lt; </span><span class="identifier-syntax">min_positive_level</span><span class="plain-syntax">)) </span><span class="identifier-syntax">min_positive_level</span><span class="plain-syntax"> = </span><span class="identifier-syntax">L</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER_INVENTORY_PACKAGES</span><span class="plain-syntax">(</span><span class="identifier-syntax">heading_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">, </span><span class="identifier-syntax">inv</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">heading_nodes</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Metadata::read_numeric</span><span class="plain-syntax">(</span><span class="identifier-syntax">heading_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^indexable"</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-ce4.html#SP1_2_1" class="named-paragraph-link"><span class="named-paragraph">Index this entry in the contents</span><span class="named-paragraph-number">1.2.1</span></a></span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">entries_written</span><span class="plain-syntax">++;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">entries_written</span><span class="plain-syntax"> == </span><span class="constant-syntax">0</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_OPEN</span><span class="plain-syntax">(</span><span class="string-syntax">"p"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"("</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Localisation::roman</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Index.Elements.C.NoContents"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">")"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_CLOSE</span><span class="plain-syntax">(</span><span class="string-syntax">"p"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
</pre>
<ul class="endnotetexts"><li>This code is used in <a href="3-ce4.html#SP1">&#167;1</a>.</li></ul>
<p class="commentary firstcommentary"><a id="SP1_2_1" class="paragraph-anchor"></a><b>&#167;1.2.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Index this entry in the contents</span><span class="named-paragraph-number">1.2.1</span></span><span class="comment-syntax"> =</span>
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">L</span><span class="plain-syntax"> = (</span><span class="reserved-syntax">int</span><span class="plain-syntax">) </span><span class="identifier-syntax">Metadata::read_numeric</span><span class="plain-syntax">(</span><span class="identifier-syntax">heading_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^level"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="comment-syntax"> indent to correct tab position</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_OPEN_WITH</span><span class="plain-syntax">(</span><span class="string-syntax">"ul"</span><span class="plain-syntax">, </span><span class="string-syntax">"class=\"leaders\""</span><span class="plain-syntax">); </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">ind_used</span><span class="plain-syntax"> = (</span><span class="reserved-syntax">int</span><span class="plain-syntax">) </span><span class="identifier-syntax">Metadata::read_numeric</span><span class="plain-syntax">(</span><span class="identifier-syntax">heading_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^indentation"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">L</span><span class="plain-syntax"> == </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="identifier-syntax">ind_used</span><span class="plain-syntax"> = </span><span class="constant-syntax">1</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_OPEN_WITH</span><span class="plain-syntax">(</span><span class="string-syntax">"li"</span><span class="plain-syntax">, </span><span class="string-syntax">"class=\"leaded indent%d\""</span><span class="plain-syntax">, </span><span class="identifier-syntax">ind_used</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::begin_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"%S"</span><span class="plain-syntax">, </span><span class="identifier-syntax">Metadata::required_textual</span><span class="plain-syntax">(</span><span class="identifier-syntax">heading_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^text"</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::end_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::begin_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">L</span><span class="plain-syntax"> &gt; </span><span class="identifier-syntax">min_positive_level</span><span class="plain-syntax">) </span><span class="identifier-syntax">HTML::begin_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"indexgrey"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="3-ce4.html#SP3" class="function-link"><span class="function-syntax">ContentsElement::word_count</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">heading_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">L</span><span class="plain-syntax"> &gt; </span><span class="identifier-syntax">min_positive_level</span><span class="plain-syntax">) </span><span class="identifier-syntax">HTML::end_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="comment-syntax"> place a link to the relevant line of the primary source text</span>
<span class="plain-syntax"> </span><a href="2-iu.html#SP2" class="function-link"><span class="function-syntax">IndexUtilities::link_package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">heading_pack</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::end_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_CLOSE</span><span class="plain-syntax">(</span><span class="string-syntax">"li"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_CLOSE</span><span class="plain-syntax">(</span><span class="string-syntax">"ul"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">summary</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Metadata::optional_textual</span><span class="plain-syntax">(</span><span class="identifier-syntax">heading_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^summary"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">summary</span><span class="plain-syntax">) &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::open_indented_p</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">ind_used</span><span class="plain-syntax">+1, </span><span class="string-syntax">"hanging"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::begin_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"indexgrey"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"&lt;i&gt;%S&lt;/i&gt;"</span><span class="plain-syntax">, </span><span class="identifier-syntax">summary</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::end_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_CLOSE</span><span class="plain-syntax">(</span><span class="string-syntax">"p"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
</pre>
<ul class="endnotetexts"><li>This code is used in <a href="3-ce4.html#SP1_2">&#167;1.2</a>.</li></ul>
<p class="commentary firstcommentary"><a id="SP1_3" class="paragraph-anchor"></a><b>&#167;1.3. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Index the extensions</span><span class="named-paragraph-number">1.3</span></span><span class="comment-syntax"> =</span>
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_OPEN</span><span class="plain-syntax">(</span><span class="string-syntax">"p"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Localisation::roman</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Index.Elements.C.ExtensionsHeading"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_CLOSE</span><span class="plain-syntax">(</span><span class="string-syntax">"p"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="3-ce4.html#SP2" class="function-link"><span class="function-syntax">ContentsElement::index_extensions_included_by</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">inv</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ext_pack</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER_INVENTORY_PACKAGES</span><span class="plain-syntax">(</span><span class="identifier-syntax">ext_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">, </span><span class="identifier-syntax">inv</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">extension_nodes</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">by_id</span><span class="plain-syntax"> =</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Metadata::optional_symbol</span><span class="plain-syntax">(</span><span class="identifier-syntax">ext_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^included_by"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">by_id</span><span class="plain-syntax">) </span><a href="3-ce4.html#SP2" class="function-link"><span class="function-syntax">ContentsElement::index_extensions_included_by</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">inv</span><span class="plain-syntax">, </span><span class="identifier-syntax">by_id</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">NOT_APPLICABLE</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><a href="3-ce4.html#SP2" class="function-link"><span class="function-syntax">ContentsElement::index_extensions_included_by</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">inv</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">);</span>
</pre>
<ul class="endnotetexts"><li>This code is used in <a href="3-ce4.html#SP1">&#167;1</a>.</li></ul>
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>&#167;2. </b>This is called recursively to show how extensions have included each other:
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">ContentsElement::index_extensions_included_by</span><button class="popup" onclick="togglePopup('usagePopup2')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup2">Usage of <span class="code-font"><span class="function-syntax">ContentsElement::index_extensions_included_by</span></span>:<br/><a href="3-ce4.html#SP1_3">&#167;1.3</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="identifier-syntax">tree_inventory</span><span class="plain-syntax"> *</span><span class="identifier-syntax">inv</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner_id</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">auto_included</span><span class="plain-syntax">, </span><span class="identifier-syntax">localisation_dictionary</span><span class="plain-syntax"> *</span><span class="identifier-syntax">LD</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">show_head</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">pack</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER_INVENTORY_PACKAGES</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">, </span><span class="identifier-syntax">inv</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">extension_nodes</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">by_id</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Metadata::optional_symbol</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^included_by"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">by_id</span><span class="plain-syntax"> == </span><span class="identifier-syntax">owner_id</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">auto_included</span><span class="plain-syntax"> != </span><span class="identifier-syntax">NOT_APPLICABLE</span><span class="plain-syntax">) &amp;&amp;</span>
<span class="plain-syntax"> ((</span><span class="reserved-syntax">int</span><span class="plain-syntax">) </span><span class="identifier-syntax">Metadata::read_optional_numeric</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^auto_included"</span><span class="plain-syntax">) != </span><span class="identifier-syntax">auto_included</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">continue</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">show_head</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::open_indented_p</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="constant-syntax">2</span><span class="plain-syntax">, </span><span class="string-syntax">"hanging"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::begin_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"indexgrey"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">auto_included</span><span class="plain-syntax"> == </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Localisation::roman</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Index.Elements.C.IncludedAutomatically"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">auto_included</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Localisation::roman</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Index.Elements.C.IncludedFromSource"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner_pack</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterPackage::container</span><span class="plain-syntax">(</span><span class="identifier-syntax">owner_id</span><span class="plain-syntax">-&gt;</span><span class="identifier-syntax">definition</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Localisation::roman_t</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Index.Elements.C.IncludedBy"</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Metadata::optional_textual</span><span class="plain-syntax">(</span><span class="identifier-syntax">owner_pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^title"</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::end_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_CLOSE</span><span class="plain-syntax">(</span><span class="string-syntax">"p"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">show_head</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-ce4.html#SP2_1" class="named-paragraph-link"><span class="named-paragraph">Index this extension</span><span class="named-paragraph-number">2.1</span></a></span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP2_1" class="paragraph-anchor"></a><b>&#167;2.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Index this extension</span><span class="named-paragraph-number">2.1</span></span><span class="comment-syntax"> =</span>
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">by_id</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Metadata::optional_symbol</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^included_by"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_OPEN_WITH</span><span class="plain-syntax">(</span><span class="string-syntax">"ul"</span><span class="plain-syntax">, </span><span class="string-syntax">"class=\"leaders\""</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_OPEN_WITH</span><span class="plain-syntax">(</span><span class="string-syntax">"li"</span><span class="plain-syntax">, </span><span class="string-syntax">"class=\"leaded indent2\""</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::begin_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"%S "</span><span class="plain-syntax">, </span><span class="identifier-syntax">Metadata::required_textual</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^title"</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Metadata::read_optional_numeric</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^standard"</span><span class="plain-syntax">) == </span><span class="constant-syntax">0</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><a href="2-iu.html#SP2" class="function-link"><span class="function-syntax">IndexUtilities::link_package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">pack</span><span class="plain-syntax">); </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"&amp;nbsp;&amp;nbsp;"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">auto_included</span><span class="plain-syntax"> != </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">) </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"by %S "</span><span class="plain-syntax">, </span><span class="identifier-syntax">Metadata::required_textual</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^author"</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">v</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Metadata::required_textual</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^version"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">v</span><span class="plain-syntax">) &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::begin_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"smaller"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Localisation::roman_t</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Index.Elements.C.Version"</span><span class="plain-syntax">, </span><span class="identifier-syntax">v</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::end_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">" "</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ec</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Metadata::optional_textual</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^extra_credit"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">ec</span><span class="plain-syntax">) &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::begin_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"smaller"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"(%S) "</span><span class="plain-syntax">, </span><span class="identifier-syntax">ec</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::end_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::end_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::begin_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="3-ce4.html#SP3" class="function-link"><span class="function-syntax">ContentsElement::word_count</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">by_id</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">at</span><span class="plain-syntax"> = (</span><span class="reserved-syntax">int</span><span class="plain-syntax">) </span><span class="identifier-syntax">Metadata::read_optional_numeric</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^included_at"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">at</span><span class="plain-syntax"> &gt; </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><a href="2-iu.html#SP2" class="function-link"><span class="function-syntax">IndexUtilities::link</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">at</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML::end_span</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_CLOSE</span><span class="plain-syntax">(</span><span class="string-syntax">"li"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HTML_CLOSE</span><span class="plain-syntax">(</span><span class="string-syntax">"ul"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"\n"</span><span class="plain-syntax">);</span>
</pre>
<ul class="endnotetexts"><li>This code is used in <a href="3-ce4.html#SP2">&#167;2</a>.</li></ul>
<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>&#167;3. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">ContentsElement::word_count</span><button class="popup" onclick="togglePopup('usagePopup3')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup3">Usage of <span class="code-font"><span class="function-syntax">ContentsElement::word_count</span></span>:<br/><a href="3-ce4.html#SP1_2_1">&#167;1.2.1</a>, <a href="3-ce4.html#SP2_1">&#167;2.1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">pack</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">localisation_dictionary</span><span class="plain-syntax"> *</span><span class="identifier-syntax">LD</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">Localisation::roman_i</span><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">LD</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"Index.Elements.C.Words"</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> (</span><span class="reserved-syntax">int</span><span class="plain-syntax">) </span><span class="identifier-syntax">Metadata::read_numeric</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"^word_count"</span><span class="plain-syntax">));</span>
<span class="plain-syntax">}</span>
</pre>
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