USAGE:

HideWnd [program_title] [, program_title] [...]

program_title is the title name of the window. For eg. title of MS Excel
is "Microsoft Excel - Book1.xls".
For such a window the following will work:
        HideWnd microsoft
        HideWnd excel
        HideWnd Book1.xls
        HideWnd Microsoft Excel

You can hide many windows at a time. For eg. if both MS Word and MS Excel
are running then...
        HideWnd microsoft
will hide both excel and word. The following will also work similarly...
        HideWnd excel, word
