Graphical User Interface overview. Three types of windows are highlighted here: S1 and S2 in blue show a set of Singleton windows that display the information on single molecules. G1 and G2 (red) are two group windows. G1 is an interactive X-Y plot where the Chembridge (dark gray) and AMRI kinase libraries (blue) are plotted. G2 represents the list of selected molecules that are highlighted in G1. D in (green) is a database window that displays the list of providers.