Library /sys$common/syshlp/dbg$help.hlb DEBUG, SHOW, ABORT_KEY, Description  *Conan The Librarian (sorry for the slow response - running on an old VAX)

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

    Related commands:

       Ctrl/C
       SET ABORT_KEY