FILE-CASE* - This configuration variable allows you to adjust the case of data file names. Possible values are:
1 --Data file names are translated to lower case.
2 --Data file names are translated to upper case.
0 --(default) No translation of the name is done.
Translation occurs before the FILE-SUFFIX and FILE-PREFIX configuration variables are applied. Be sure that these variables specify the correct case.
File name translation does not occur if the file name starts with -F, -D, or -P. (See the User's Guide, section 2.8, "File Name Interpretation.")