digraph G {
	graph [mindist=0.1]; 
	csf [shape=doublecircle,label="Common\nSpreadsheet\nFormat\n(JS Object)"];
	subgraph XL {
		node  [style=filled,color=green];
		xlsx  [label="XLSX\nXLSM"];
		xlsb  [label="XLSB\nBIFF12"];
		xlml  [label="SSML\n(2003/4)"];
		xls2  [label="XLS\nBIFF2"];
		xls3  [label="XLS\nBIFF3"];
		xls4  [label="XLS\nBIFF4"];
		xls5  [label="XLS\nBIFF5"];
		xls8  [label="XLS\nBIFF8"];
	}

	subgraph OD {
		node  [style=filled,color=yellow];
		ods   [label="ODS"];
		fods  [label="Flat\nODS"];
		uos   [label="UOS\n标文通"];
	}

	subgraph OLD {
		node  [style=filled,color=cyan];
		html  [label="HTML\nTable"];
		csv   [label="CSV"];
	}

	subgraph JSXLSX {
		edge [color=blue];
		csf -> xlsx
		xlsx -> csf
		csf -> xlsb
		xlsb -> csf
		csf -> xlml
		xlml -> csf
		xls2 -> csf
		csf -> xls2
		xls3 -> csf
		xls4 -> csf
		xls5 -> csf
		xls8 -> csf
		csf -> csv
		ods -> csf
		csf -> ods
		fods -> csf
		csf -> fods
		uos -> csf
		html -> csf
	}
}