Setting drop down list to empty string '' does not work under Windows.

We have a need to be able to 'blank out' the value in certain drop-down lists.
Our current technique for doing so is to set selectedItem to '' (an empty string)
which also happens to be one of the items in the list. On OS/2 and AIX, we see
the behavior we expect, which is the drop-down being 'blanked out'.  However,
when we try to set selectedItem to an empty string on Windows Platforms,
the drop-down list retains the previous value.

To install the fix:

1) From the File pulldown, choose Open and open the .st file that
   came with this readme.
2) Select all the text and file in.