1982-10-15 /decuslib10-12/01/43,50547/pltlib/v12/dskplt.mac 1984-01-20 /decuslib10-12/01/43,50547/dskplt.mac 1984-01-20 /decuslib10-12/01/43,50547/pltlib/v12a/dskplt.mac