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

   Specifies the command key that is used in controlling DECwindows
   test sessions. The default command key is F9.

   The command key must be in the DECwindows Latin-1 KEYSYM
   encodings. Display the file DECW$INCLUDE:KEYSYMDEF.H with the DCL
   TYPE command to view the list of the Latin-1 KEYSYM keys.

   For example, to use F7 as the command key, enter the following
   command:

     DTM> PLAY test-name/DECWINDOWS/KEYSYM=F7