input-file

    Supplies one or more names of binary error log files to be
    converted to the older format.

    If you do not specify an input file, the default input file is
    SYS$ERRORLOG:ERRLOG.SYS. If you do not specify a device and
    directory, your current device and directory are used. If you
    do not specify a file name, the default file name is ERRLOG. If
    you do not specify a file type, the default file type is .SYS.