In prior versions of OpenVMS, DCL and RMS converted all
    file specifications to uppercase. When using Extended File
    Specifications, the case of all file names is preserved as
    created by the user.

    Files and directories can have mixed case names in extended file
    names.

    Original
    file name      ODS-2 Volume   ODS-5 Volume

    MILANO;1       MILANO.;1      MILANO.;1
    SanRemo        SANREMO.;1     SanRemo.;1
    genoa..1       GENOA.;1       genoa.;1