1digraph G {
2  subgraph cluster_os {
3    style=filled;
4    color=grey;
5    label="Windows";
6
7    subgraph cluster_python {
8      label="Automation Tool/Python";
9      color=lightgrey;
10      HarnessCase -> HarnessController;
11      HarnessCase -> OpenThreadController;
12    }
13
14    HarnessCase -> Chrome [label="selenium"];
15    HarnessController -> "Thread Harness";
16  }
17  OpenThreadController -> DUT [label="serial port"];
18}
19