int wflag, int *firstp);
int cf_read (CFile cf, int no, int offset, int num, void *buf);
int cf_write (CFile cf, int no, int offset, int num, const void *buf);
int wflag, int *firstp);
int cf_read (CFile cf, int no, int offset, int num, void *buf);
int cf_write (CFile cf, int no, int offset, int num, const void *buf);