"mystyle.style" and you want to write the waypoints from
a GPX file named "mine.gpx" to it, you would issue a command like:
</para>
-<para><userinput>gpsbabel -i gpx -f mine.gpx -o xcsv,style=mystyle.style -f mine.new</userinput></para>
+<para><userinput>gpsbabel -i gpx -f mine.gpx -o xcsv,style=mystyle.style -F mine.new</userinput></para>
<para>
You might then examine <filename>mine.new</filename> to see if it met
your expectations. If not, you could continue to tweak