1digraph {
2	compound=true
3	fontname="Inconsolata, Consolas"
4	fontsize=10
5	margin="0,0"
6	ranksep=0.2
7	nodesep=0.5
8	penwidth=0.5
9	colorscheme=spectral7
10
11	node [shape=box, fontname="Inconsolata, Consolas", fontsize=10, penwidth=0.5, style=filled, fillcolor=white]
12	edge [fontname="Inconsolata, Consolas", fontsize=10, penwidth=0.5]
13
14	subgraph cluster1 {
15		margin="10,10"
16		labeljust="left"
17		label = "SAX"
18		style=filled
19		fillcolor=6
20
21		Reader -> Writer [style=invis]
22	}
23
24	subgraph cluster2 {
25		margin="10,10"
26		labeljust="left"
27		label = "DOM"
28		style=filled
29		fillcolor=7
30
31		Value
32		Document
33	}
34
35	Handler [label="<<concept>>\nHandler"]
36
37	{
38		edge [arrowtail=onormal, dir=back]
39		Value -> Document
40		Handler -> Document
41		Handler -> Writer
42	}
43
44	{
45		edge [arrowhead=vee, style=dashed, constraint=false]
46		Reader -> Handler [label="calls"]
47		Value -> Handler [label="calls"]
48		Document -> Reader [label="uses"]
49	}
50}