void list_commands(struct cmd_struct *commands, FILE *ofp);
void list_cmd_options(FILE *ofp, struct poptOption *options);
void list_cmd_options_argpar(FILE *ofp, const struct argpar_opt_descr *options);
void list_commands(struct cmd_struct *commands, FILE *ofp);
void list_cmd_options(FILE *ofp, struct poptOption *options);
void list_cmd_options_argpar(FILE *ofp, const struct argpar_opt_descr *options);