4a39786c0e5473f3e987017bcb616b63423a89e2
max
  Wed Sep 9 06:16:03 2026 -0700
hg38 Fiber-seq: open the compendium description by naming the collection it belongs to

A subtrack description page should say which collection it is part of and
link back to that page, so a reader who lands on it from a search result
can get to the container.  A bare hgTrackUi link rather than one carrying
${hgsid}: native trackDb html is substituted by hgTrackDb when it loads
the table, where there is no cart, so $hgsid resolves to the empty string
and the link would come out as 'hgsid=&g=fiberSeq'.  The ${hgsid} form
works on hub pages, which are substituted at render time instead.

refs #36210

diff --git src/hg/makeDb/trackDb/human/hg38/fiberSeqCompendium.html src/hg/makeDb/trackDb/human/hg38/fiberSeqCompendium.html
index f0133557990..b85602a5be4 100644
--- src/hg/makeDb/trackDb/human/hg38/fiberSeqCompendium.html
+++ src/hg/makeDb/trackDb/human/hg38/fiberSeqCompendium.html
@@ -1,19 +1,20 @@
 <h2>Description</h2>
 
 <p>
-This track holds the full Fiber-seq data for 41 samples: 14 cell lines and 27 lymphoblastoid
+This track is part of the <a href="hgTrackUi?g=fiberSeq">Fiber-seq</a> collection. It holds the
+full Fiber-seq data for 41 samples: 14 cell lines and 27 lymphoblastoid
 lines derived from individuals sequenced by the Human Pangenome Reference Consortium and the
 Genome in a Bottle project. Chromatin accessibility and CpG methylation are read from the same
 molecules in the same experiment, so both are kept in one table here and can be compared without
 worrying about differences in cell preparation or sequencing depth. Six kinds of data are
 available for each sample:
 </p>
 
 <ul>
   <li>Percent accessible: the fraction of Fiber-seq molecules on which a position was called
       accessible, combining both chromosomes.</li>
   <li>FIRE peaks: the accessible regulatory elements called from that signal, with a score and
       a false discovery rate.</li>
   <li>Haplotype accessibility: the percent-accessible signal computed separately for the two
       parental chromosomes and drawn as an overlay, which makes elements that are open on one
       chromosome but not the other visible directly.</li>