Library /sys$common/syshlp/nclhelp.hlb show, event_dispatcher, sink, Status  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 o  buffer size

    Maximum number of octets allowed for event processing of this
    sink. This value is defined in the create command for the sink.
    This value is limited by the value specified in the maximum
    buffer size argument of the create command.

 o  state

    Status of the sink.

    off        The sink is disabled.

    on         The sink is enabled.

 o  uid

    Entity's unique identifier, which is generated when the entity is
    created.