Highlighting and zooming. The topmost track shows a region of mouse chromosome 19 selected by clicking and dragging across the genome. The region is highlighted on all tracks and the user is given the option to zoom in to the chosen region. The results of zooming into the highlighted regions are displayed in the following 5 tracks. The bottom two tracks show a single point in the genome selected to allow the user to center the viewing window on the chosen position. The position selected by clicking one track is reflected in all other tracks to pinpoint aligned features.