Figure 2

Dataset Browsing/Selection. The upper-left pane allows filtering of the datasets. The main pane shows the results of the filtering. Details of the run can be expanded by clicking on the arrow before the name. If the read is indexed, a button appears that select the dataset for analysis and places the name in the lower left pane. After the selection is done, cliking on the Analyze button will launch the form to build a search query (figure 3). Only pre-indexed libraries can be selected for further analysis.