0ba660768822e93ed43e9a717f580c525094caf8
lrnassar
  Mon Sep 28 16:42:18 2026 -0700
Fiber-seq: sentence case for the Common cell line sample class, which was
Title Cased because that is how Mitchell wrote it in the mail that gave us
the classification rule.  The other two values were already right, and
tadsEncode's organ facet is the precedent (Adrenal gland, Bone marrow).  The
swatch table on the description page had been saying "Common cell line" in
its prose all along, so the filter label and the text explaining it now
agree.  fiberSeq.ra is untouched: the class only lives in the metadata TSV
and the colors JSON, both read at runtime, so no trackDb reload is needed.
Caught by Lou.  refs #36210

diff --git src/hg/makeDb/doc/hg38/fiberSeq.txt src/hg/makeDb/doc/hg38/fiberSeq.txt
index 008093c9782..5956096f01d 100644
--- src/hg/makeDb/doc/hg38/fiberSeq.txt
+++ src/hg/makeDb/doc/hg38/fiberSeq.txt
@@ -301,31 +301,31 @@
 #    bigBed-generic filter.<field> settings are NOT read by this type.  All
 #    three defaults are the full range, so nothing is hidden until the user
 #    narrows one.  Verified in the rendered UI:
 #      hgTrackUi?db=hg38&g=fiberSeqCompendium_PM00004_peaks
 #    draws min/max boxes for all three with the right limit hints.
 #
 # 5. Facet columns: only "sampleClass" is faceted.  facetedComposite.js offers
 #    a facet value only when it occurs more than once (a checkbox matching a
 #    single row is just a slow search box), so:
 #      accession  41 distinct, all count 1, and excluded anyway as primaryKey
 #      _sample    41 distinct, all count 1 - can never be a facet
 #      _cellType  14 distinct but only 2 with count > 1 (Lymphoblastoid 27,
 #                 Embryonic stem cell 2), so as a facet it drew two checkboxes
 #                 and left 12 samples unreachable.  Underscored, so it is a
 #                 searchable and sortable column instead.
-#      sampleClass 3 values, HPRC (20), Common Cell Line (16) and Rare disease
+#      sampleClass 3 values, HPRC (20), Common cell line (16) and Rare disease
 #                 sample (5), all count > 1.  Read from the fifth column of
 #                 fiberSeqSamples.tsv, which carries the lab's own
 #                 classification.  It used to be derived from the free-text cell
 #                 type, which misfiled five lymphoblastoid lines as HPRC.  Those
 #                 five - GM25455, GM25456, GM27730, GM28570, GM28572 - turned out
 #                 to be neither: Andrew Stergachis said on 2026-09-22 that they
 #                 are rare disease cases consented to broad genomic data sharing,
 #                 the first of a batch they intend to keep adding to, and asked
 #                 for a class of their own rather than filing them with the
 #                 common cell lines.
 #
 # 6. Subtracks need an explicit priority.  Without one they fall back to a label
 #    sort, which showed a sample's data types as Peaks, CpG, Acc on a first
 #    visit.  The script now numbers them sample-outer, declared-data-type-inner
 #    (i*10 + j + 1), which matches the row of data type checkboxes across the