*Vertices 4
1 "MedHist" 0.0 0.0 0.0 x_fact 0.000000 y_fact 61.290323
2 "Positif" 0.0 0.0 0.0 x_fact 3.225806 y_fact 9.677419
3 "RevFranEtudAmer" 0.0 0.0 0.0 x_fact 19.354839 y_fact 22.580645
4 "VingtiemeSiecleRevHist" 0.0 0.0 0.0 x_fact 3.225806 y_fact 6.451613
*Matrix 
0.000000 0.000000 0.377964 0.707107 
0.000000 0.000000 0.507093 0.000000 
0.377964 0.507093 0.000000 0.534522 
0.707107 0.000000 0.534522 0.000000