{ LOGFILE logSpec [, logSpec]...
| NOFILENAMECHECK
| SKIP READONLY
| DEVICE TYPE deviceSpecifier [, deviceSpecifier]...
| PFILE [=] ['] filename [']
}
[ LOGFILE logSpec [, logSpec]...
| NOFILENAMECHECK
| SKIP READONLY
| DEVICE TYPE deviceSpecifier [, deviceSpecifier]...
| PFILE [=] ['] filename [']
]...