VMS Help SET, PROCESS, Qualifiers, /SUSPEND  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /SUSPEND[=SUPERVISOR]
       /SUSPEND=KERNEL
       /NOSUSPEND

    Requires privileges as described in text.

    Temporarily stops the process's activities. The process remains
    suspended until another process resumes or deletes it. Use the
    qualifiers /NOSUSPEND and /RESUME to resume a suspended process.

    Specify either of the following keywords with the /SUSPEND
    qualifier to produce different results:

    Keyword     Result

    SUPERVISOR  Specifies that the named process is to be suspended
    (default)   to allow the delivery of asynchronous system traps
                (ASTs) at EXEC or KERNEL mode. Specifying this
                keyword is optional.

    KERNEL      Specifies that the named process is to be suspended
                such that no ASTs can be delivered. To specify the
                KERNEL keyword, you must be in either KERNEL mode or
                EXEC mode, or have CMKRNL (change mode to kernel) and
                CMEXEC (change mode to executive) privilege enabled.
                Note that this was the default behavior of the SET
                PROCESS/SUSPEND command for versions of OpenVMS prior
                to VMS Version 5.0.

    Depending on the operation, the process from which you specify
    the /SUSPEND qualifier requires privileges. You must have GROUP
    privilege to suspend another process in the same group, unless
    that process has the same user identification code (UIC). You
    must have WORLD privilege to suspend any other process in the
    system.

    When you enter the SET PROCESS/SUSPEND=KERNEL/ID= command in a
    cluster environment, the KERNEL keyword is ignored if the target
    process and the current process reside on different cluster
    nodes. As a result, process suspension is handled as if you had
    specified the SUPERVISOR keyword (the default).

    Note that you can specify SET PROCESS/SUSPEND=KERNEL
    to override a previous SET PROCESS/SUSPEND=SUPERVISOR.
    SET PROCESS/SUSPEND=SUPERVISOR does not, however, override SET
    PROCESS/SUSPEND=KERNEL.