Logical structure of Index file (example).

<p>In this example the sub-word found in position 6 is also found in at least one other location of the reference sequence (see example in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0054294#pone-0054294-g005" target="_blank">Figure 5</a>).</p>