added example on clearing VOPs

presentation/graphs/clear_vop_01.dot

@@ -1,7 +1,8 @@
 graph start
 {
     labelloc="t";
-    label="Initial Graph";
+    label="#0: Initial Graph";
+
 
     0 [label="0, VOP = 7"]
     1 [label="1, VOP = 19"]
@@ -9,6 +10,9 @@ graph start
     3 [label="3, VOP = 7"]
     4 [label="4, VOP = 3"]
 
+    {rank=same; 0; 1}
+    {rank=same; 2; 3}
+
     0 -- 1 -- 2 -- 3 -- 4 -- 1
     2 -- 4
 }

presentation/graphs/clear_vop_02.dot

@@ -1,11 +1,18 @@
 graph intermediate
 {
+    labelloc="t";
+    label="#1: La(1)";
+
     0 [label="0, VOP = 10"]
     1 [label="1, VOP = 21"]
     2 [label="2, VOP = 5"]
     3 [label="3, VOP = 7"]
     4 [label="4, VOP = 6"]
 
+    {rank=same; 0; 1}
+    {rank=same; 2; 3}
+
+
     0 -- 1
     0 -- 2
     0 -- 4

presentation/graphs/clear_vop_03.dot

@@ -1,11 +1,18 @@
 graph intermediate
 {
+    labelloc="t";
+    label="#2: La(1)";
+
     0 [label="0, VOP = 0"]
     1 [label="1, VOP = 11"]
     2 [label="2, VOP = 8"]
     3 [label="3, VOP = 7"]
     4 [label="4, VOP = 9"]
 
+    {rank=same; 0; 1}
+    {rank=same; 2; 3}
+
+
     0 -- 1 -- 2 -- 3 -- 4 -- 1
     2 -- 4
 }

presentation/graphs/clear_vop_04.dot

@@ -1,11 +1,18 @@
 graph intermediate
 {
+    labelloc="t";
+    label="#3: La(1)";
+
     0 [label="0, VOP = 4"]
     1 [label="1, VOP = 5"]
     2 [label="2, VOP = 2"]
     3 [label="3, VOP = 7"]
     4 [label="4, VOP = 11"]
 
+    {rank=same; 0; 1}
+    {rank=same; 2; 3}
+
+
     0 -- 1
     0 -- 2
     0 -- 4

presentation/graphs/clear_vop_05.dot

@@ -1,11 +1,18 @@
 graph intermediate
 {
+    labelloc="t";
+    label="#4: La(2)";
+
     0 [label="0, VOP = 7"]
     1 [label="1, VOP = 8"]
     2 [label="2, VOP = 6"]
     3 [label="3, VOP = 10"]
     4 [label="4, VOP = 11"]
 
+    {rank=same; 0; 1}
+    {rank=same; 2; 3}
+
+
     0 -- 2
     0 -- 4
     0 -- 3

presentation/graphs/clear_vop_06.dot

@@ -1,11 +1,18 @@
 graph intermediate
 {
+    labelloc="t";
+    label="#5: La(2)";
+
     0 [label="0, VOP = 10"]
     1 [label="1, VOP = 2"]
     2 [label="2, VOP = 14"]
     3 [label="3, VOP = 0"]
     4 [label="4, VOP = 11"]
 
+    {rank=same; 0; 1}
+    {rank=same; 2; 3}
+
+
     0 -- 1
     0 -- 2
     0 -- 4