m_FileOverride [-i][-d][-g][-r][-k][-S][-t][-U][-O PathOpts][-M PathMode] 
-s label ddname dsname

m_FileOverride -i [-D Delimiter] -s Labelproc DDNAME

m_FileOverride -d [[-r RecSize -t Type [-k key]]|-S ModelFile][-g [CUR|ALL 
[(-|+)np][rang]]] -s label DDNAME DSNAME