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

   /BENCHMARK=file-specification

   Specifies the file to contain the expected output from the test's
   execution. Digital Test Manager supplies a file name of the form
   test-name.BMK. If your file specification includes a directory
   specification, it overrides the default benchmark directory
   for the library. Benchmark files may be located in the Digital Test
   Manager library, in another directory, or in a CMS library.