Table 1.

List of new trackDb settings added to the Hub Track Database Definition document (https://genome.ucsc.edu/goldenPath/help/trackDb/trackDbHub.html) over the last year

Setting name	Description
otherTwoBitUrl	For in pairwise alignment tracks (chain, PSL), used to specify location of query sequence.
logo	Enables the dynseq display feature on wiggle tracks.
speciesLabels	Allows one to specify new labels that map to sequence names in bigMaf tracks.
hicDistanceMax	Controls the maximum interaction distance in nucleotides for the heatmap in Hi-C tracks.
hicDistanceMin	Controls the minimum interaction distance in nucleotides for the heatmap in Hi-C tracks.
barChartFacets	Enables the facets feature in bigBarChart track description and item details pages.
barChartStatsUrl	Associates a table in tab-separated-values with the bigBarChart track, with one line per bar. Currently used in coordination with the barChartsFacets tag to specify metadata such as cell types or tissue of origin.
barChartBarMinPadding	Sets the minimum pixel width between bars for bigBarChart tracks.
barChartBarMinWidth	Sets the minimum pixel width of the bars in bigBarChart tracks.
barChartStretchToItem	Extends the barCharts to cover the entire horizontal space available in the graph. Useful for bigBarChart tracks with many bars.
pslSequence	Specifies display configuration options for PSL tracks that also have sequence loaded.
showCdsAllScales	Shows CDS for PSL tracks at all zoom levels.
showCdsMaxZoom	Specifies (bases/pixel) the maximum zoom-out allowed for displaying the CDS for PSL tracks.
showDiffBasesMaxZoom	Shows annotations highlighting base or codon differences only if current zoom level does not exceed value (bases/pixel) in PSL tracks.