Tracks provide a unified framework for the visualization, comparison and analysis of genome-scale studies such as whole-genome sequencing or exome resequencing projects. Information in tracks is tied to a genomic position. Each track type supports a particular type of data, with functionality relevant to the type of data available. Details about the different types of tracks are provided in Track types.

When the mouse cursor is hovered over items in the graphical view of a track, information about that item and about the location the cursor is hovered over is displayed in several places (figure 27.1):

Compatible tracks can be stacked in a Track List, supporting comparative analysis (figure 27.1). See Track lists for details about creating and working with Track Lists.

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Figure 27.1: Compatible tracks have been added to a Track List and the cursor is hovered over an item in one of the tracks, revealing information about that item in three places: just under the coordinates near the top, in a tooltip near the item itself, and in the lower right corner of the Workbench frame.