/sys$common/syshlp/helplib.hlb LANCP, SET, ACP, Qualifiers, /OPCOM  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /OPCOM (default)
       /NOOPCOM

    Enables OPCOM messages from LANACP LAN Server process.

    Messages are generated by the LANACP LAN Server process when
    a device status changes, load requests are received, and
    loads complete. These messages are displayed on the operator's
    console and included in the log file written by LANACP,
    SYS$MANAGER:LAN$ACP.LOG.