 have flat files like GFF3 or BED, it is usually best
          to use <span class="code">bin/flatfile-to-json.pl</span> to
          import them.
          <span class="code">bin/flatfile-to-json.pl</span> accepts
          many different command-line settings that can be used to
          customize the appearance of the new track.
          Run <span class="code">bin/flatfile-to-json.pl --help</span>
          to see a description of the available settings.

          <div class="code">bin/flatfile-to-jso