int tbl_option(struct tbl_node *, int, const char *);
int tbl_layout(struct tbl_node *, int, const char *);
int tbl_data(struct tbl_node *, int, const char *);
int tbl_cdata(struct tbl_node *, int, const char *);
const struct tbl_span *tbl_span(struct tbl_node *);
int tbl_option(struct tbl_node *, int, const char *);
int tbl_layout(struct tbl_node *, int, const char *);
int tbl_data(struct tbl_node *, int, const char *);
int tbl_cdata(struct tbl_node *, int, const char *);
const struct tbl_span *tbl_span(struct tbl_node *);