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  FFLUSH

  .  Summary

  fflush(int <fh>);

  .  Description

  The fflush function flushes the buffer associated with the file rep-
  resented by file handle <fh>. If the file is opened for writing, any
  characters in the buffer are written. If the file is opened for
  reading, the buffer is cleared.

  .  Return Value

  A value of -1 is returned if there is a problem flushing the buffer.