1c07e6e9103123809e420560f2ebf370dde996ea
jcasper
  Sun Jan 11 21:24:24 2026 -0800
Docs for the hicArcLimit and hicArcLimitEnabled setings, which control how many arcs
are actually drawn in arc mode, refs #36774

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index 9154cc42e34..4b6aaf251f1 100755
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+++ src/hg/htdocs/goldenPath/help/trackDb/changes.html
@@ -1,128 +1,134 @@
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     <META name="description" content="UCSC Track Database Definition Changes">
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     <TITLE>UCSC Track Database Definition History</TITLE>
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     <div class="lightBlueBarTitle">&nbsp;&nbsp;Track Database Definition Change History</div>
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 <DIV class="trackDbDoc_intro">
 <H1>Track Database Definition</H1>
 
 <p>This document summarizes the changes to the <a href="trackDbHub.html">UCSC Genome Browser Hub TrackDb specification</a>.<p>
 
 <TABLE class="settingsTable" id="Common_Settings">
 <tbody>
 <tr valign="TOP">
 <th width="100">Date</th>
 <th width="15%">Track Types</th>
 <th width="15%">Link to Doc</th>
 <th>Change</th>
 </tr>
 
+<tr>
+    <td>2026-01-11</td>
+    <td>hic</td>
+    <td><a href="trackDbHub.html#hicArcLimit">hicArcLimit</a></td>
+    <td>Limit the number of arcs displayed in a Hi-C plot, favoring those with the highest scores</td>
+</tr>
 <tr>
     <td>2024-06-11</td>
     <td>bigBed, bigGenePred, bigChain, bigPsl</td>
     <td><a href="trackDbHub.html#highlight">highlightValues.*</a></td>
     <td>Allow user to highlight certain features in yellow, if they contain certain values in an extraField</td>
 </tr>
 <tr>
     <td>2024-01-22</td>
     <td>bigWig</td>
     <td><a href="trackDbHub.html#setColorWith">setColorWith</a></td>
     <td>Color a signal plot from a bigWig file by the ranges in a bigBed file</td>
 </tr>
 <tr>
     <td>2023-11-08</td>
     <td>bigBed, bigGenePred, bigChain, bigPsl</td>
     <td><a href="../decorator.html">decorator.*</a></td>
     <td>Semi-transparently overlay annotations, e.g. protein domains on transcripts, mutations on exons, or summits on chip-seq peaks</td>
 </tr>
 <tr>
     <td>2023-10-16</td>
     <td>bigGenePred, bigChain, bigPsl</td>
     <td><a href="../decorator.html">mouseOver, mouseOverField</a></td>
     <td>mouseOver works for all bigBed-based file formats</td>
 </tr>
 <tr>
     <td>2023-06-27</td>
     <td>all</td>
     <td><a href="trackDbHub.html#maxItems">maxItems</a></td>
     <td>Change: <tt>maxItems</tt>, increased default to 10,000, 10x more items can be shown.</td>
 </tr>
 <tr>
     <td>2023-04-04</td>
     <td>all</td>
     <td><a href="trackDbHub.html#downloadUrl">downloadUrl</a></td>
     <td>New: <tt>downloadUrl &lt;fileType&gt; &lt;URL&gt;</tt><br>Shows a link where user can download a file. On the UCSC browser, the link is shown above the description page. Right now this is used for GFF files on gene tracks.</td>
 </tr>
 <tr>
     <td>2022-09-30</td>
     <td>bigBed, BAM</td>
     <td><a href="trackDbHub.html#doWiggle">doWiggle</a></td>
     <td>New: <tt>doWiggle on</tt><br>Instead of showing the features, show coverage of features, as a 'wiggle' (signal) style track. Can be switched off by the user on the track config page.</td>
 </tr>
 <tr>
     <td>2022-09-22</td>
     <td>bigGenePred</td>
     <td><a href="trackDbHub.html#colorByStrand">colorByStrand</a></td>
     <td>Change: <tt>colorByStrand</tt> can now be used by bigGenePred-type tracks.</td>
 </tr>
 <tr>
     <td>2022-06-30</td>
     <td>bigPsl, bigChain</td>
     <td><a href="trackDbHub.html#otherTwoBitUrl">otherTwoBitUrl</a></td>
     <td>New: <tt>otherTwoBitUrl &lt;URL&gt;</tt><br>This statement allows to store query sequences in a separate twoBit file rather than in the annotation file itself, which can reduce the size of the annotation file.</td>
 </tr>
 <tr>
     <td>2022-05-14</td>
     <td>bigWig</td>
     <td><a href="trackDbHub.html#logo">logo</a></td>
     <td>New: <tt>logo on</tt><br>Motif logo of the genome sequence, as a "dynseq" display, see <a href='../bigWig.html#Ex4'>the example</a>.</td>
 </tr>
 <tr>
     <td>2022-05-05</td>
     <td>bigMaf, maf</td>
     <td><a href="trackDbHub.html#logoMaf">logoMaf</a></td>
     <td>New: <tt>logoMaf on</tt><br>Motif logo on MAF/bigMaf alignment tracks. Zooming in on alignment shows nucleotides scaled by phyloP conservation.</td>
 </tr>
 <tr>
     <td>2019-05</td>
     <td>all</td>
     <td><a href="../hgTracksHelp.html#UseOneFile">useOneFile</a></td>
     <td><tt>useOneFile on</tt><br>Adding the 'useOneFile on' line to the hub.txt section of a hub allows the contents of all three files to be referenced inside of one file.</td>
 </tr>
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