--- /dev/null
+<para>
+ Convert route number 'index' from source into sdf format.
+</para>
+<para>
+ We have a lot of more expressive formats thats support more than one route.
+ At this place sdf files are limited to only one single route. With option index
+ you can specify which route from source should be converted.
+</para>
+<para>
+ Our default index is 1.
+</para>
+<para>
+ This example will convert route number two and three into separate sdf files:
+ <screen format="linespecific">
+ gpsbabel -i gdb -f routes.gdb -r -o stmsdf,index=2 -F route-one.sdf -r -o stmsdf,index=3 -F route-three.sdf
+ </screen>
+</para>