bfrewind
if (bfrewind(fp) < 0)
extern int bfrewind __P((SM_FILE_T *));
(void) bfrewind(e->e_dfp);
(void) bfrewind(e->e_dfp);
if (bfrewind(e->e_dfp) < 0)
(rewind && bfrewind(e->e_dfp) < 0))
(void) bfrewind(e->e_parent->e_xfp);
(void) bfrewind(e->e_xfp);
(void) bfrewind(e->e_dfp);