GraphViz bloque = new GraphViz();
        bloque.addln(bloque.start_graph());
        String inicio = "L0:";
        String codigo1 = "t0 = true<br />t1=true<br />t2=t0 and t1<br />";
        String codigo2 = "if t2==true goto L1<br />goto L2<br />";
        String v="L1:";
        String f="L2:";
        //shape = \"Mrecord\"
        bloque.addln("subgraph clusterA {");

        bloque.addln("\"state0\" [ style = \"filled, bold\" penwidth = 1 fillcolor = \"white\" fontname = \"Courier New\" shape = \"Mrecord\" label = \"L0:\" ];");
        bloque.addln("\"state1\" [ style = \"filled, bold\" penwidth = 1 fillcolor = \"white\" fontname = \"Courier New\" shape = \"Mrecord\" label = <<table border=\"0\" cellborder=\"0\" cellpadding=\"3\" bgcolor=\"white\"><tr><td align=\"left\" port=\"r0\">t0=1*2</td></tr><tr><td align=\"left\" port=\"r1\">t1=t0+3</td></tr><tr><td align=\"left\" port=\"r2\">t2=t1+2</td></tr><tr><td align=\"left\" port=\"r3\">if t=true goto L1</td></tr><tr><td align=\"left\" port=\"r4\">goto L2</td></tr></table>> ];");
        bloque.addln("\"state2\" [ style = \"filled, bold\" penwidth = 1 fillcolor = \"white\" fontname = \"Courier New\" shape = \"Mrecord\" label = \"L1:\" ];");
        bloque.addln("\"state3\" [ style = \"filled, bold\" penwidth = 1 fillcolor = \"white\" fontname = \"Courier New\" shape = \"Mrecord\" label = <<table border=\"0\" cellborder=\"0\" cellpadding=\"3\" bgcolor=\"white\"><tr><td align=\"left\" port=\"r0\">t0=1*2</td></tr><tr><td align=\"left\" port=\"r1\">t1=t0+3</td></tr><tr><td align=\"left\" port=\"r2\">t2=t1+2</td></tr><tr><td align=\"left\" port=\"r3\">t3=t2+5</td></tr></table>> ];");
        bloque.addln("\"state4\" [ style = \"filled, bold\" penwidth = 1 fillcolor = \"white\" fontname = \"Courier New\" shape = \"Mrecord\" label = \"L2:\" ];");

        bloque.addln("state0 -> state1;");
        bloque.addln("state1 -> state2;");
        bloque.addln("state1 -> state4;");
        bloque.addln("state2 -> state3;");
        bloque.addln("state3 -> state0;");
        bloque.addln("state3 -> state4;");

        bloque.addln("}");

        bloque.addln(bloque.end_graph());

        String type = "png";
        File out = new File("C:\\Bloques_3D\\Bloque."+type);
        bloque.writeGraphToFile(bloque.getGraph(bloque.getDotSource(),type),out);