<para>
   Binary track logs used by the <productname>Geogrid</productname>-Viewer, a very
   popular product in Germany.
</para>
<para>
   GPSBabel has full support for version 1.0 of this file format.
</para>
<para>
   We can also read some GPS data (including coordinates) from version 2.5. But
   it seems, that this newer version no longer stores time stamps. This can be
   a problem when converting to other formats or if you want to use our track filter.
</para>
