The 2D display comes in two flavors - the 2D Preview and the 2D Viewer. There are two differences between these two windows. First, the 2D Preview can only show a single molecule - the Focused one (see Section 3.1.1) - whereas the 2D Viewer can show several in a grid if the application is in Tiled mode. Secondly, the 2D Viewer can be set as the main window, but the 2D Preview cannot. The 2D Viewer is shown in Figure 6.1.
The 2D Preview is best suited for use as a small secondary display of the Focused molecule while otherwise browsing. The 2D Viewer often requires more screen real estate and is usually best suited as the main window.