So I need to familiarize myself with PDM works. I have seen demos, but it has been a while. I have avoided PDM systems for years, as I found them very restrictive as an independant conceptual designer, but I now suport several multi-user customers, and need to become conversant and expert in PDM works. I understand the basic concept of PDM. Where/how would you suggest familiarizing myself with PDM works? Our dealer wants to come do a demo, but I would like to understand as much as possible before that happens. clay