-int roff_regisset(const struct roff *, enum regs);
-unsigned int roff_regget(const struct roff *, enum regs);
-void roff_regunset(struct roff *, enum regs);
-char roff_eqndelim(const struct roff *);
-void roff_openeqn(struct roff *, const char *,
- int, int, const char *);
-int roff_closeeqn(struct roff *);
+void roff_setreg(struct roff *, const char *, int, char sign);
+int roff_getreg(const struct roff *, const char *);
+char *roff_strdup(const struct roff *, const char *);
+int roff_getcontrol(const struct roff *,
+ const char *, int *);
+int roff_getformat(const struct roff *);