x_io_rewind
Rewind file to beginning.
X_IO_API bool x_io_rewind(XFile *file);
x_io_seek
Seek within file.
X_IO_API bool x_io_seek(
XFile *file,
long offset,
int32_t origin
);
x_io_tell
Return current file position.
X_IO_API long x_io_tell(XFile *file);