15.20.3  KEY 

     DEFINE KEY keyname "key definition" options

This  defines  a  key  on your keypad so you can abbreviate a command to a
single keystroke.  The syntax is similar to the  VMS  DEFINE/KEY  command.
Since  the syntax is VMS the key definition must be enclosed in quotes (")
and not in apostrophes (').  For more information  See:DEFINE/KEY  in  the
VAX/VMS DCL Dictionary.