busy_t
void (*scr_busy)(SCR *, const char *, busy_t);
busy_t btype;
busy_t btype;
search_busy(SCR *sp, busy_t btype)
busy_t btype;
void search_busy(SCR *, busy_t);
void vs_busy(SCR *, const char *, busy_t);
vs_busy(SCR *sp, const char *msg, busy_t btype)