digraph {
concentrate=true;overlap=scale;"backdoor=SLUB" [label="backdoor\nSLUB",shape=box,style=filled,color=deepskyblue];"backdoor=SLUB" -> "tool=SLUB Backdoor" [label="similar",dir="both"];"tool=SLUB Backdoor" [label="tool\nSLUB Backdoor",shape=box,style=filled,color=deepskyblue];}