6ab7b1dfca6cc123dfe09a9e9f8afdf0c8cbdf31
max
  Mon Apr 20 06:40:58 2026 -0700
changes after code review, refs #37376

diff --git src/hg/htdocs/goldenPath/help/bigBed.html src/hg/htdocs/goldenPath/help/bigBed.html
index 7d871b80c00..1d169f28264 100755
--- src/hg/htdocs/goldenPath/help/bigBed.html
+++ src/hg/htdocs/goldenPath/help/bigBed.html
@@ -315,30 +315,35 @@
   Extra fields can contain text for labels or for display with mouseover (if the BED
   "name" field is needed for something that is not the label). See the trackDb settings 
   &quot;<a href="trackDb/trackDbHub.html#mouseOverField">mouseOverField</a>&quot; and 
   &quot;<a href="trackDb/trackDbHub.html#labelField">labelField</a>&quot; for more information.</li>
   <li>
   When you click on features, the contents of all extra fields are shown as a table. You can modify 
   the layout of the resulting page with the trackDb settings 
   &quot;<a href="trackDb/trackDbHub.html#skipFields">skipFields</a>&quot;, 
   &quot;<a href="trackDb/trackDbHub.html#sepFields">sepFields</a>&quot; 
   and &quot;<a href="trackDb/trackDbHub.html#skipEmptyFields">skipEmptyFields</a>&quot;, and 
   transform text fields into links with the 
   &quot;<a href="trackDb/trackDbHub.html#urls">urls</a>&quot; trackDb setting.</li>
   <li>
   Extra fields that start with the character &quot;_&quot; are reserved for internal use (special 
   display code); their contents are not shown on the details page.</li>
+  <li>
+  Extra fields can contain a pipe ("|") character to separate them into a short label and a longer
+  description. e.g. "N|Number of samples" or "miRNA-target|microRNA target gene and position".
+  On the click details page, the second part is shown on a new line and in smaller font and for
+  filters, only the first part is shown.
 </ol>
 
 <h2>Sharing Your Data with Others</h2>
 <p>
 If you would like to share your bigBed data track with a colleague, the best solution is to 
 save your current view as a stable <a href="hgSessionHelp.html">Genome Browser Session Link</a>.
 This will save the position and all settings that you made, all track visibilities, filters, 
 highlights, etc.
 </p>
 <p>
 If you want to create URLs to your bigBed file programmatically from software, 
 look at Example #6 on <a href="customTrack.html#EXAMPLE6">this page</a>.
 </p>
 
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