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    (#1) local (*IO_glob, *NIO_glob) = 
(#2) (sub(){'IO'>'}, sub(){'<NIO>'});
  2. or download this
      sub IO_GLOB redefined at line 2. 
  sub NIO_GLOB redefined at line 2.
  3. or download this
    (#1) local (*IO_glob, *NIO_glob);
(#2) (*IO_glob, *NIO_glob) = 
(#3) (sub(){'IO'>'}, sub(){'<NIO>'});