digraph asl {
	bgcolor=white;
	node[fontsize=10, fontname="FreeSans.ttf"];
	compound=true;
	concentrate=true;
	subgraph clusterASL 
	{
		node [style=filled,color=white];
		style=filled;
		color=lightblue;
		label = "ASL";
		Utilities
		DataObjects
		DataProcessingModule
		NumericalModule
		GeometryModule
		IOModule
	}
	subgraph clusterProg 
	{
		node [style=filled,color=lightgrey];
		color=black;
		label = "Typical ASL program";
		
		InputFileDefinitions
		InputFileDefinitions->DataStructure
		InputFileDefinitions->DataInitialization
		InputFileDefinitions->NumericalAlgorithm
		DataStructure->DataOutput
		InputFileDefinitions->DataOutput
		
	
	}
	Utilities->InputFileDefinitions;
	DataObjects->DataStructure;
	NumericalModule->NumericalAlgorithm;
	DataProcessingModule->NumericalAlgorithm;
	IOModule->DataOutput;
	DataProcessingModule->DataOutput;
}


