GS
if (reg <= GS) {
reg -= GS + 1;
void cl_setname(GS *, char *);
int sig_init(GS *, SCR *);
int cl_quit(GS *);
int cl_term_end(GS *);
int screen_init(GS *, SCR *, SCR **);
void seq_close(GS *);
int editor(GS *, int, char *[]);
void v_end(GS *);
void msg_close(GS *);
void cut_close(GS *);