thomas wald shared this with us in microsoft.public.excel.newusers:

I have his book on formulas but he does not explain the formulas all
he does is give you the layout without an explanation what the the
fiels are and how they are used. Thanks any other books Johns book is
of no help to me "Tom Ogilvy" wrote in message

You must have a different book! Are you absolutely 100% sure your book
is the same as the one on the website???

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Amedee Van Gasse