<para>
  When no speed data is available in the source input, GPSBabel uses this as the default speed value.
  The parameter has to be in kilometers per hour, or, when units=s specified,
  in miles per hour. <link linkend="fmt_garmin_gpi_o_alerts">alerts</link> are
  automatically enabled.
</para>
<para>
  <userinput>
    gpsbabel -i gpx -f "SpeedCameras.gpx" -o garmin_gpi,units=s,speed=30 -F "SpeedCameras.gpi"
  </userinput>
</para>
<para>
  Its also possible to append a specific speed unit to the parameter.
</para>
<para>
  <userinput>
    gpsbabel -i gpx -f "SpeedCameras.gpx" -o garmin_gpi,speed=30mph -F "SpeedCameras.gpi"
  </userinput>
</para>
<para>
  <table xml:id="garmin_gpi_speed_units">
  <title>Supported speed units (garmin_gpi)</title>
  <tgroup cols="2">
  <thead>
  <row>
    <entry>Unit</entry>
    <entry>Description</entry>
  </row>
  </thead>
  <tbody>
  <row>
    <entry>km/h</entry>
    <entry>Kilometers per hour</entry>
  </row>
  <row>
    <entry>kmh</entry>
    <entry>Kilometers per hour</entry>
  </row>
  <row>
    <entry>kph</entry>
    <entry>Kilometers per hour</entry>
  </row>
  <row>
    <entry>kt</entry>
    <entry>Knots</entry>
  </row>
  <row>
    <entry>knot</entry>
    <entry>Knots</entry>
  </row>
  <row>
    <entry>m/s</entry>
    <entry>Meters per second</entry>
  </row>
  <row>
    <entry>mps</entry>
    <entry>Meters per second</entry>
  </row>
  <row>
    <entry>mi/h</entry>
    <entry>Miles per hour</entry>
  </row>
</tbody>
</tgroup>
</table>
</para>
