track	dataPKuse
compositeTrack	on
shortLabel	Peaks
longLabel	Peaks
priority	150
subGroup1	view View UPK=usepeaks
subGroup2	type Type uni=unified PR=PR SE=SE
type	bigBed

   track	dataPKuse_UsePeaks
   parent	dataPKuse
   shortLabel	Peaks
   longLabel	Peaks
   view	UPK
   visibility	dense
   type	bigBed 3
   allButtonPair	on
   centerLabelsDense	on
   dragAndDrop	on
   showSubtrackColorOnUi	on
   viewUi	on

      track	uni5of21.PKuse
      parent	dataPKuse_UsePeaks
      bigDataUrl	data/usePk/unified_5of21.ExclBlacklist.bigBed
      shortLabel	unified peaks
      longLabel	unified peaks (5 of 21 overlap)
      type	bigBed 3
      color	0,0,0
      priority	151
      visibility	dense
      subGroups	View=UPK type=uni

      track	PR_SG.PKuse
      parent	dataPKuse_UsePeaks
      bigDataUrl	data/usePk/T47D_P4_PR.SG3-peaks.bigBed
      shortLabel	T47D_PR_P4 peaks
      longLabel	T47D PR P4 peaks (F8, 1e-5)
      type	bigBed 3
      color	0,0,0
      priority	152
      visibility	dense
      subGroups	View=UPK type=PR

      track	PR_MT.PKuse
      parent	dataPKuse_UsePeaks
      bigDataUrl	data/usePk/T47D_P4_PR.MT-peaks.bigBed
      shortLabel	T47D_PR_P4 MT [don't use]
      longLabel	T47D PR P4 peaks (F4, 1e-3)
      type	bigBed 3
      color	0,0,0
      priority	153
      visibility	dense
      subGroups	View=UPK type=PR