<para>
  If this option is specified, GPSBabel drops all calculated route points,
  with exception of points with a description (i.e. "Make U-turns until you know where you are.").
  The priority of this option is higher than of the <option>via</option> and <option>dropwpt</option> options.
  A value of 1 or y overwrites the <option>via</option> and <option>dropwpt</option> settings.
</para>
<example id="gdb_roadbook_option">
  <title>Using gdb option <option>roadbook</option> to create simple html roadbook</title>
  <para>
    <userinput>
      gpsbabel -i gdb,roadbook -f sample.gdb -x nuketypes,waypoints,tracks -x transform,wpt=rte -o html -F roadbook.html
    </userinput>
  </para>
  <para>
    Because gdb internally creates a route AND a waypoint list, you have to drop all
    waypoints and transform the route into waypoints in order to get a well ordered
    html output. We suggest these steps for all waypoint-only formats as html.
  </para>
</example>
