[1] GPX - GPS Exchange Format ( 版) <http://www.gdal.org/drv_gpx.html>
<extensions>
<navaid:name>TOTAL RF</navaid:name>
<navaid:address>BENSALEM</navaid:address>
<navaid:state>PA</navaid:state>
<navaid:country>US</navaid:country>
<navaid:frequency type="CTAF" frequency="122.900" name="CTAF"/>
</navaid:frequencies>
<navaid:runway designation="H1" length="80" width="80" surface="ASPH-G">
</navaid:runway>
</navaid:runways>
<navaid:magvar>12</navaid:magvar>
</extensions>