The DEFINE command associates an equivalence string
 and a set of attributes with a key on the terminal
 keyboard.  The /KEY qualifier is required.

 For additional information, see the DEFINE/KEY command
 in the VAX/VMS DCL Dictionary.  In addition, control
 keys may be defined as shown in the following example.

 Format:

      DEFINE/KEY key-name equivalence-string

 example:

      DEFINE/KEY CNTRLW "REFRESH"/TERMINATE

 Note:  The control-W key is defined by default as
        shown in the above example.

        For additional information on other default
        key definitions, see help on DEFAULT_KEYPAD.