VMS Help DTM, DELETE, HISTORY, Command Qualifiers, /OUTPUT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

   /OUTPUT[=file-specification]

   Sends output from the DELETE HISTORY command to the specified
   file.

   The output is written to a file called HISTORY.OUT in your
   current directory if you do not specify the /OUTPUT qualifier.
   If you specify the file name without the file type, the file type
   defaults to .LIS.