6a731cde7f73dcf905192439bdf064a73abf11d2
galt
  Sun Aug 24 13:24:29 2025 -0700
Fixes #35580 and #36250

diff --git src/hg/hgTracks/hgTracks.h src/hg/hgTracks/hgTracks.h
index 9010e48e8ef..4803f5debc3 100644
--- src/hg/hgTracks/hgTracks.h
+++ src/hg/hgTracks/hgTracks.h
@@ -309,30 +309,31 @@
      * which takes care of all sorts of things including packing. */
 
     int (*nonPropPixelWidth)(struct track *tg, void *item);
     /* Return the width in pixels of the non-proportional part of track, e.g. gtexGene graphic */
 
 
     struct slInt *labelColumns; /* The columns in a bigBed that can be used for labels. */
     boolean subTrackVisSet;     /* have we calculated visibility on this subtrack */
     boolean subTrackVis;        /* if we calculated it, what is it */
 
     struct lollyCartOptions *lollyCart;
     double squishyPackPoint;    /* the value at which we switch to squish mode. */
     char * originalTrack;       /* the name of the original track if this a pseduo-duplicate track used for squishyPack */
     boolean limitWiggle;       /* TRUE if this track is drawing in coverage mode because of limited visibility */
     boolean isColorBigBed;      /* True if this track is a fake track used for wiggle coloring. */
+    void (*loadSummary)(struct track *tg); /* loadSumary data for bigBed etc.   */
     };
 
 struct window  // window in multiwindow image
     {
     struct window *next;   // Next on list.
 
     // These two were experimental and will be removed soon:
     char *organism;        /* Name of organism */
     char *database;        /* Name of database */
 
     char *chromName;
     int winStart;           // in bases
     int winEnd;
     int insideX;            // in pixels
     int insideWidth;