VMS Help DTM, MODIFY, TEST_DESCRIPTION, Parameter Qualifiers  *Conan The Librarian (sorry for the slow response - running on an old VAX)

1 - /GROUP

   Identifies the immediately preceding item in the parameter as
   a group expression. The default is /TEST_DESCRIPTION. If a test
   group expression comprises a list, use this qualifier after each
   item that designates a group.

2 - /TEST_DESCRIPTION

   Identifies the immediately preceding item in the parameter as a
   test expression. This is the default.