Library /sys$common/syshlp/sysmanhelp.hlb SET, ENVIRONMENT, Qualifiers, /CLUSTER  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Specifies that all subsequent commands apply to all nodes in
    the cluster. By default, the management environment is the local
    cluster. Specify a nonlocal cluster by naming one cluster member
    with the /NODE qualifier.