By default, the Ctrl/C sequence, when entered within a debugging
    session, aborts the execution of a debugger command and
    interrupts program execution. The SET ABORT_KEY command enables
    you to assign the abort function to another Ctrl-key sequence.
    This might be necessary if your program has a Ctrl/C AST service
    routine enabled.

    Many Ctrl-key sequences have predefined functions, and the SET
    ABORT_KEY command enables you to override such definitions (see
    the OpenVMS User's Manual). Some of the Ctrl-key characters not
    used by the operating system are G, K, N, and P.

    The SHOW ABORT_KEY command identifies the Ctrl-key sequence
    currently in effect for the abort function.

    Do not use Ctrl/Y from within a debugging session. Instead, use
    either Ctrl/C or an equivalent Ctrl-key sequence established with
    the SET ABORT_KEY command.

    Related commands:

       Ctrl/C
       Ctrl/Y
       SHOW ABORT_KEY