// Simple manipulators
inline int Fd() {return iFd;};
inline void Fd(int fd) {iFd = fd;};
+ inline gzFile gzFd() {return gz;};
inline bool IsOpen() {return iFd >= 0;};
inline bool Failed() {return (Flags & Fail) == Fail;};
inline void EraseOnFailure() {Flags |= DelOnFail;};