How to built an I-filter ?

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From: Pat (pat21_at_yahoo.fr)
Date: 08/10/04 

Date: Tue, 10 Aug 2004 16:24:25 +0200

Hello,
I need a I-filter for autocad dwg 2004 format (actually, there is only dwg
2000/2002).

Where could I found technical informations to build my i-filter : Is there
some examples with code sources and documentations ?

Thanks

Patrick

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