say you have frame-relay configured in hub and spoke. You've set your broadcast up in the interface section using: frame relay map <ip> <wildcard> <DLC> BROADCAST, that way OSPF traffic will flow across the links.
Now, you go to configure OSPF. You don't want a BDR so you set the spokes to IP OSPF PRIORITY 0. However, I've read that on the hub you still have to set a manual neighbor statement for all your spokes. Why is that? If broadcast has been turned on...isn't the neighbor adjacency formed by the now (presumably) broadcasted OSPF packets?