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