Syntax:

      /[NO]STAGE

  Use /STAGE to withhold committing changes in the CDD until the entire
  copy  is  completed.  Use /NOSTAGE to make changes in the CDD as each
  dictionary directory, subdictionary, or object is copied.

  Using /STAGE assures that no changes remain in the  dictionary  if  a
  command   is  interrupted.   However,  with  /STAGE,  execution  time
  increases   exponentially   with   the   number    of    directories,
  subdictionaries, and objects copied.

  With /NOSTAGE, execution time increases linearly with the  number  of
  directories,  subdictionaries,  or  objects  copied.  However, if you
  interrupt an unstaged COPY command, some of the changes remain in the
  dictionary.

  The default is /NOSTAGE.