/sys$common/syshlp/helplib.hlb MONITOR, MONITOR, Command Qualifier Descriptions, /OUTPUT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /OUTPUT=file-spec

    Used with the CONVERT command, this qualifier specifies the name
    of the converted recording file. The default specification is
    MONITOR.DAT. File lists are not permitted.