In that thread Cindy says the following
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www.eps-software.com
Knowledge Base (left side)
I want to search for: frx
Query Result: A GenRepoX Overview, The FRX Structure

final url: http://www.eps-software.com/isapi/eps.dll?KnowledgeBase~DisplayKBDocument~9
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>Hi Evan.I need more info about the frx format too.
>I cant understand where i must look in the thread.