digraph {
concentrate=true;overlap=scale;"rat=NJRat" [label="rat\nNJRat",shape=box,style=filled,color=deepskyblue];"rat=NJRat" -> "rat=Kiler RAT" [label="similar",dir="both"];"rat=Kiler RAT" [label="rat\nKiler RAT",shape=box,style=filled,color=deepskyblue];}