Screenshot: BLAST Output Viewer (BOV). This example screenshot of the BLAST Output Viewer displays some of the available columns information from an individual BLAST hit. This particular window is displaying the first five hits for a sequence named, "Contig_318." From here the user can move forward or backward through all BLAST output sequences. The user can also click on the "View Alignment" column to bring up the "Sequence Alignment Viewer" window.