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%% SPDX-License-Identifier: Apache-2.0
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[;1m  close(IoDevice)[0m

  Closes the file referenced by [;;4mIoDevice[0m. It mostly returns [;;4mok[0m,
  except for some severe errors such as out of memory.

  Notice that if option [;;4mdelayed_write[0m was used when opening the
  file, [;;4mclose/1[0m can return an old write error and not even try to
  close the file. See [;;4mopen/2[0m.
