DECwindows Motif provides DEC DATATRIEVE users with an easy way
   to execute command procedures, to open and close log
   sessions, to navigate through and set dictionaries, to
   set other DEC DATATRIEVE setup parameters, and to display
   information on certain DEC DATATRIEVE sources.

   To invoke DEC DATATRIEVE with the DECwindows Motif interface, use
   the following command:

           $ DATATRIEVE/INTERFACE=DECWINDOWS

   This qualifier overrides the setting specified by the
   DTR$NOWINDOWS logical.