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<p>Document Module:Keywords and how to extend the keyword map</p> <p><b>New page</b></p><div>{{Documentation subpage}}<br /> This module renders the &lt;code&gt;keywords&lt;/code&gt; field of {{tl|Infobox paper}}. Recognised concepts<br /> become links; everything else stays plain text.<br /> <br /> == Why it exists ==<br /> The keyword fields came from a legacy database in which the terms were already wrapped in<br /> &lt;code&gt;&lt;nowiki&gt;[[...]]&lt;/nowiki&gt;&lt;/code&gt;. Most of those targets had never been written, so about<br /> &#039;&#039;&#039;8,900 keyword links across the paper pages rendered red&#039;&#039;&#039;. A second problem was subtler: some<br /> targets that &#039;&#039;did&#039;&#039; exist were the wrong kind of page. This wiki has &#039;&#039;&#039;papers&#039;&#039;&#039; titled<br /> &#039;&#039;Gravity&#039;&#039;, &#039;&#039;Time&#039;&#039;, &#039;&#039;Ether&#039;&#039; and &#039;&#039;Cosmology&#039;&#039;, so the keyword &quot;gravity&quot; pointed at one paper<br /> rather than at the subject. A further eleven terms — &#039;&#039;Cold Fusion&#039;&#039;, &#039;&#039;Anti-Gravity&#039;&#039;,<br /> &#039;&#039;Thermodynamics&#039;&#039;, &#039;&#039;Black Holes&#039;&#039; and others — were redirects to<br /> [[Index of Papers Without Abstracts]].<br /> <br /> So &quot;link it if the page exists&quot; is not a safe rule on this wiki. The module ignores whatever markup<br /> is stored on the page and decides the link itself, against a curated allowlist.<br /> <br /> == How it behaves ==<br /> * The whole field has its markup stripped &#039;&#039;&#039;before&#039;&#039;&#039; it is split on commas. Some rows wrap the<br /> entire list in one link (&lt;code&gt;&lt;nowiki&gt;[[Sw Canis Majoris, Binary stars, Lacy, motion]]&lt;/nowiki&gt;&lt;/code&gt;);<br /> splitting first would leave unbalanced fragments that rejoin into a single giant redlink.<br /> * Matching is case-insensitive and ignores trailing punctuation, so &lt;code&gt;Aether&lt;/code&gt;,<br /> &lt;code&gt;aether&lt;/code&gt; and &lt;code&gt;aether.&lt;/code&gt; all resolve alike.<br /> * Duplicate terms within one field are dropped.<br /> * A term links &#039;&#039;&#039;only&#039;&#039;&#039; if it appears in [[Module:Keywords/data]]. Creating an article is<br /> therefore not enough to produce a link — the mapping must be added deliberately. That is what<br /> keeps papers and books out of the keyword links.<br /> * If the data page is missing or broken the keywords still render, just unlinked. The module is<br /> transcluded on thousands of pages and must not fail loudly.<br /> <br /> == Adding a keyword ==<br /> Edit [[Module:Keywords/data]] and add a line to the &lt;code&gt;map&lt;/code&gt; table:<br /> <br /> &lt;pre&gt;[&#039;relativity principle&#039;] = &#039;Principle of relativity&#039;,&lt;/pre&gt;<br /> <br /> The key must be &#039;&#039;&#039;lower case&#039;&#039;&#039;. The value must be the exact title of a &#039;&#039;&#039;topic, theory or person&#039;&#039;&#039;<br /> page. Before adding one, open the target and check it is not a paper or a book — that is the mistake<br /> this module exists to prevent.<br /> <br /> == See also ==<br /> * [[Module:Keywords/data]] — the map itself<br /> * [[Template:Infobox paper]] — where it is called<br /> <br /> &lt;includeonly&gt;[[Category:Modules]]&lt;/includeonly&gt;</div>

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