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+digraph chapter02 {
+/*
+return 1+2*3+-5;
+*/
+ rankdir=BT;
+ ordering="in";
+ concentrate="true";
+ subgraph cluster_Nodes {
+ Start1 [ shape=box style=filled fillcolor=yellow label="Start" ];
+ Con_2 [ label="#1" ];
+ Con_3 [ label="#2" ];
+ Con_4 [ label="#3" ];
+ Mul5 [ label="*" ];
+ Con_6 [ label="#5" ];
+ Minus7 [ label="-" ];
+ Add8 [ label="+" ];
+ Add9 [ label="+" ];
+ Return10 [ shape=box style=filled fillcolor=yellow label="Return" ];
+ }
+ edge [ fontname=Helvetica, fontsize=8 ];
+ Con_2 -> Start1[taillabel=0 style=dotted];
+ Con_3 -> Start1[taillabel=0 style=dotted];
+ Con_4 -> Start1[taillabel=0 style=dotted];
+ Mul5 -> Con_3[taillabel=1];
+ Mul5 -> Con_4[taillabel=2];
+ Con_6 -> Start1[taillabel=0 style=dotted];
+ Minus7 -> Con_6[taillabel=1];
+ Add8 -> Mul5[taillabel=1];
+ Add8 -> Minus7[taillabel=2];
+ Add9 -> Con_2[taillabel=1];
+ Add9 -> Add8[taillabel=2];
+ Return10 -> Start1[taillabel=0 color=red];
+ Return10 -> Add9[taillabel=1];
+}