To invoke DTM, choose one of the following methods:

  o  Invoke the DTM DECwindows interface by specifying
     the DTM command with the /INTERFACE=DECWINDOWS
     qualifier at DCL level.

  o  Invoke the DTM DECwindows interface by selecting the
     DTM verb from within the FileView window. You must
     place the verb in one of the FileView menus.

  o  Enter the DTM command at DCL level. This invokes
     the DTM subsystem shown by the prompt DTM>). Once in
     subsystem mode, you can execute commands by entering
     subcommands, keywords, parameters, and qualifiers.