I always thought they were drawn in CAD and then converted to BLK tasks by Reliance Engineering, but Jeff's comment has me wondering if there was perhaps some tool which did that for them.Well how did Reliance do it back when you bought an Engineered system from them?
the 30 day software isnt that hard to get. A license on the other hand is neigh impossible have I found out.Maxtools will have to do some searching!