All, It has been resolved via e-mail thread that EBD files describe modules containing two or more IC's. These modules can be boards, or packages. Arpad and I plan to evaluate this syntax and the BIRD 125 and 145 syntax and report to the committee with our recommendations. The enclosed presentation summarizes all of the proposed parameter tree syntax by using simple examples that demonstrate the proposed package modeling functionality for IBIS 6.0. I previously sent out an example applying this functionality to an EBD example. Walter Walter Katz <mailto:wkatz@xxxxxxxxxx> wkatz@xxxxxxxxxx Phone 303.449-2308 Mobile 303.335-6156