Use monospace font for code in figures.

source/assets/figdag.dot

@@ -1,10 +1,10 @@
 digraph dag {
     graph [nodesep=1.5, rankdir=BT];
 
-    Base [shape=plaintext, height=.1, fontsize=24];
-    Derived1 [shape=plaintext, height=.1, fontsize=24];
-    Derived2 [shape=plaintext, height=.1, fontsize=24];
+    Base [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    Derived1 [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    Derived2 [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
 
     Derived2 -> Derived1;
     Derived1 -> Base;
-}
+}

source/assets/figname.dot

@@ -1,17 +1,17 @@
 digraph virt {
     graph [nodesep=1.5, rankdir=BT];
 
-    W1 [label = "W", shape=plaintext, height=.1, fontsize=24];
-    V [shape=plaintext, height=.1, fontsize=24];
-    W2 [label = "W", shape=plaintext, height=.1, fontsize=24];
-    B [shape=plaintext, height=.1, fontsize=24];
-    C [shape=plaintext, height=.1, fontsize=24];
-    D [shape=plaintext, height=.1, fontsize=24];
+    W1 [label = "W", shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    V [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    W2 [label = "W", shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    B [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    C [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    D [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
 
     D -> B;
     D -> C;
     B -> V;
     C -> V;
     B -> W1;
     C -> W2;
-}
+}

source/assets/fignonvirt.dot

@@ -1,14 +1,14 @@
 digraph nonvirt {
     graph [nodesep=1.5, rankdir=BT];
 
-    L1 [label = "L", shape=plaintext, height=.1, fontsize=24];
-    L2 [label = "L", shape=plaintext, height=.1, fontsize=24];
-    A [shape=plaintext, height=.1, fontsize=24];
-    B [shape=plaintext, height=.1, fontsize=24];
-    C [shape=plaintext, height=.1, fontsize=24];
+    L1 [label = "L", shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    L2 [label = "L", shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    A [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    B [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    C [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
 
     C -> B;
     C -> A;
     B -> L2;
     A -> L1;
-}
+}

source/assets/figvirt.dot

@@ -1,13 +1,13 @@
 digraph virt {
     graph [nodesep=1.5, rankdir=BT];
 
-    V [shape=plaintext, height=.1, fontsize=24];
-    A [shape=plaintext, height=.1, fontsize=24];
-    B [shape=plaintext, height=.1, fontsize=24];
-    C [shape=plaintext, height=.1, fontsize=24];
+    V [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    A [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    B [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    C [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
 
     C -> B;
     C -> A;
     B -> V;
     A -> V;
-}
+}

source/assets/figvirtnonvirt.dot

@@ -1,12 +1,12 @@
 digraph virtnonvirt {
     graph [nodesep=1.5, rankdir=BT];
 
-    B1 [label = "B", shape=plaintext, height=.1, fontsize=24];
-    B2 [label = "B", shape=plaintext, height=.1, fontsize=24];
-    AA [shape=plaintext, height=.1, fontsize=24];
-    X [shape=plaintext, height=.1, fontsize=24];
-    Y [shape=plaintext, height=.1, fontsize=24];
-    Z [shape=plaintext, height=.1, fontsize=24];
+    B1 [label = "B", shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    B2 [label = "B", shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    AA [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    X [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    Y [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
+    Z [shape=plaintext, height=.1, fontsize=11, fontname="Courier New"];
 
     subgraph {
     AA -> X;
@@ -17,4 +17,4 @@ digraph virtnonvirt {
 
     AA -> Z [weight=0];
     Z  -> B2;
-}
+}