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

   /COMMAND="DCL-command"

   Specifies a command to be executed before the test is recorded or
   executed. Use this qualifier to start applications for inclusion
   in the test. This qualifier applies to DECwindows tests only.