vik_kml_export_units_t a_vik_get_kml_export_units ( );
+#ifndef WINDOWS
+/* Windows automatically uses the system defined viewer
+ ATM for other systems need to specify the program to use */
+const gchar* a_vik_get_image_viewer ( );
+#endif
+
+const gchar* a_vik_get_external_gpx_program_1 ( );
+
+const gchar* a_vik_get_external_gpx_program_2 ( );
+
/* Group for global preferences */
#define VIKING_PREFERENCES_GROUP_KEY "viking.globals"
#define VIKING_PREFERENCES_NAMESPACE "viking.globals."