int run_command(const char *line, int interactive);
int run_command_simplify(const char *arg);
int run_command_explain(const char *arg);
int run_command_declare(const char *cmdarg);
int run_command(const char *line, int interactive);
int run_command_simplify(const char *arg);
int run_command_explain(const char *arg);
int run_command_declare(const char *cmdarg);