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─────Run-Time Library───────────────────────────────────────────────────────
 
  Include:   <io.h>, <errno.h>
 
  Syntax:    int _chsize( int handle, long size );
 
  Returns:   0 if the size change is successful, or -1 if not.
             errno: EACCES, EBADF, ENOSPC
 
  See also:  _open, _creat, _chmod, _utime, _fstat
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