$RENAME m50aBIG0.BDF BDFm50aBIG0.DAT
$RENAME m50aBIG1.BDF BDFm50aBIG1.DAT
$RENAME m50aBIG2.BDF BDFm50aBIG2.DAT
$RENAME m50aBIG4.BDF BDFm50aBIG4.DAT
$RENAME m50aBIG8.BDF BDFm50aBIG8.DAT
$RENAME m50aLIT0.BDF BDFm50aLIT0.DAT
$RENAME m50aLIT1.BDF BDFm50aLIT1.DAT
$RENAME m50aLIT2.BDF BDFm50aLIT2.DAT
$RENAME m50aLIT4.BDF BDFm50aLIT4.DAT
$RENAME m50aLIT8.BDF BDFm50aLIT8.DAT