void set_cloud_layer_coverage (int index, const char * coverage);
int get_cloud_layer_coverage_type (int index) const;
void set_cloud_layer_coverage_type (int index, int type );
+ double get_cloud_layer_visibility_m (int index) const;
+ void set_cloud_layer_visibility_m (int index, double visibility_m);
FGEnvironment * _environment; // always the same, for now
FGClouds *fgClouds;