void sym_from_style(struct osm_object *o, struct style_results *sr, struct svg *svg);
z_index_t sym_zindex(struct osm_object *o, struct style_info *si, double default_mzi);
void sym_from_style(struct osm_object *o, struct style_results *sr, struct svg *svg);
z_index_t sym_zindex(struct osm_object *o, struct style_info *si, double default_mzi);