I am curious how Allegro Physcal Viewer calculates a net's resistance. I can create a report which contains NET_RESISTANCE from the NET database. How is the value returned calculated? If the net is only a shape, does it calculate the resistance between the furthest points on that shape? Does it account for multiple layers or only one? Does it use an average width, or does it calculate the resistance of each segment and then add them up? If there are multiple source and sink pins, which ones does it select? Thanks.