Syntax:

      /LOG [= file-specification]
      /NOLOG

  Use /LOG to create a list  of  the  given  names  of  the  dictionary
  directories,  subdictionaries,  and objects deleted.  However, if you
  specify  /ALL  or  /NOCHECK  to  delete  a  dictionary  directory  or
  subdictionary  with  children,  /LOG  does  not list the names of the
  deleted children.

  The file specification is a standard VMS  file  specification  naming
  the  file  into  which  the log is written.  The default file type is
  .LOG.  If you use /LOG without specifying a file, DMU writes the  log
  to SYS$OUTPUT.  With /NOLOG, no list is created.

  The default is /NOLOG.